chore(python): release 2.1.0

Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq

AGENTS.md

@@ -4,6 +4,15 @@
 
 This repository owns the published `elydora` package, its CLI, synchronous and asynchronous API clients, local signing behavior, generated hook runtimes, and Python-specific agent adapters.
 
+## Shared Modules
+
+- `elydora/_client_common.py` owns request bodies, headers, and error mapping for both clients.
+- `elydora/plugins/_runtime.py` owns runtime paths, install config validation, runtime config validation, runtime file changes, and status checks for the transactional adapters. Kiro IDE keeps its workspace-bound variants in `kiroide_io.py`; Kiro CLI and OpenCode keep their own simple checks.
+- `elydora/plugins/_shell_command.py` owns shell quoting, PowerShell encoding, and command parsing.
+- `elydora/plugins/_file_io.py` owns atomic text and JSON writes plus plain JSON reads for the non-transactional adapters.
+- `elydora/plugins/_managed_files.py` and `_transaction*.py` own physical-file reads and rollback-capable commits.
+- Put new cross-provider logic in these modules; provider files keep only their schema, ownership, and rendering rules.
+
 ## Integration Sources
 
 - Verify every agent hook contract against current official provider documentation before changing an adapter.
@@ -44,7 +53,7 @@ This repository owns the published `elydora` package, its CLI, synchronous and a
 - Keep the package, distribution, and CLI version in `elydora/_version.py`; build metadata must read that literal through Setuptools dynamic metadata.
 - Ship `elydora/py.typed` in every wheel and verify public annotations from an installed-wheel consumer.
 - Support every Python version declared in `pyproject.toml`.
-- Keep production source files at or below 500 lines.
+- Keep every source and test file at or below 500 lines; share test fixtures through `tests/<provider>_support.py`.
 - Keep functions focused on one ownership boundary.
 - Propagate unexpected errors to the CLI boundary.
 - Use documented defaults only for genuinely optional configuration.
@@ -74,6 +83,8 @@ py -3 -m pip wheel . --no-deps --wheel-dir <temporary-directory>
 git diff --check
 ```
 
+On Linux and macOS use `python -m` in place of `py -3 -m`, and point `HOME` and `XDG_CONFIG_HOME` at a scratch directory so the suite never touches real agent configuration. `[tool.mypy] platform = "win32"` type-checks the Windows branches on every host.
+
 Provider adapter tests must cover installation, idempotency, official event forwarding, blocking behavior, status, missing runtime files, uninstall ownership, and malformed configuration preservation.
 
 Commit and push one root issue before starting the next one.

README.md

@@ -161,14 +161,20 @@ Retryable responses honor both `Retry-After` seconds and HTTP-date values.
 # Register a new user and organization
 reg = ElydoraClient.register(base_url, email, password, display_name=None, org_name=None)
 
-# Login and receive a session token
+# Login and use the session token
 auth = ElydoraClient.login(base_url, email, password)
+client.token = auth["token"]
 
 # Get current authenticated user profile
 me = client.get_me()
 
-# Issue a new API token (with optional TTL in seconds)
+# Issue an API token from the session token (optional TTL in seconds)
 token_resp = client.issue_api_token(ttl_seconds=3600)
+client.token = token_resp["token"]
+
+# Rotate the API token the client now uses
+rotated = client.rotate_api_token()
+client.token = rotated["token"]
 ```
 
 ### Operations
@@ -219,6 +225,9 @@ agents_resp = client.list_agents()
 # Unfreeze a previously frozen agent
 client.unfreeze_agent(agent_id, reason="review complete")
 
+# Change the integration type
+client.update_agent(agent_id, integration_type="cursor")
+
 # Delete an agent permanently
 deleted_resp = client.delete_agent(agent_id)
 ```
@@ -260,6 +269,25 @@ detail = client.get_export(export_id)
 data = client.download_export(export_id)
 ```
 
+### Webhooks
+
+```python
+webhooks = client.list_webhooks()
+created = client.register_webhook(
+    endpoint_url="https://example.com/elydora",
+    events=["operation.accepted", "agent.status_changed"],
+    secret="<signing-secret>",
+)
+client.delete_webhook(created["webhook"]["webhook_id"])
+```
+
+### Organization
+
+```python
+members = client.list_members()
+events = client.list_admin_events(limit=50)
+```
+
 ### JWKS
 
 ```python
@@ -269,9 +297,12 @@ jwks = client.get_jwks()
 ### Health
 
 ```python
-# Check API health (no authentication required)
+# No authentication required
 health = client.health()
-# health["status"], health["version"], health["protocol_version"], health["timestamp"]
+# health["status"], health["version"], health["protocol_version"], health["capabilities"]
+
+deep = client.deep_health()
+# deep["dependencies"]["d1"]["status"], deep["dependencies"]["d1"]["latency_ms"]
 ```
 
 ### Crypto Functions
@@ -303,7 +334,7 @@ from elydora import (
 
 ### Type Definitions
 
-All types are `TypedDict` classes for structural typing:
+Records are `TypedDict` classes; enumerations are `Literal` aliases, and `INTEGRATION_TYPES` is a tuple:
 
 ```python
 from elydora import (
@@ -312,18 +343,28 @@ from elydora import (
     EAR,                       # Elydora Acknowledgment Receipt
 
     # Entity types
-    Agent, AgentKey, Operation, Receipt, Epoch, Export, Organization, User,
+    Agent, AgentAssignment, AgentKey, AdminEvent, AuthMeUser,
+    CurrentOrganization, DependencyHealth, EpochAnchor, MemberEntry,
+    Operation, Receipt, Epoch, Export, Organization, User, WebhookEntry,
+
+    # Enumerations
+    AdminAction, AgentStatus, ErrorCode, ExportStatus, IntegrationType,
+    KeyStatus, RbacRole, INTEGRATION_TYPES,
 
     # API response types
-    RegisterAgentResponse, GetAgentResponse, ListAgentsResponse,
-    DeleteAgentResponse, SubmitOperationResponse, GetOperationResponse,
+    RegisterAgentResponse, UpdateAgentResponse, GetAgentResponse,
+    ListAgentsResponse, DeleteAgentResponse, FreezeAgentResponse,
+    UnfreezeAgentResponse, SubmitOperationResponse, GetOperationResponse,
     VerifyOperationResponse, AuditQueryResponse, GetEpochResponse,
     ListEpochsResponse, CreateExportResponse, GetExportResponse,
-    ListExportsResponse, JWKSResponse, AuthRegisterResponse,
-    AuthLoginResponse, GetMeResponse, IssueApiTokenResponse, HealthResponse,
+    ListExportsResponse, ListWebhooksResponse, RegisterWebhookResponse,
+    ListMembersResponse, ListAdminEventsResponse, JWKSResponse,
+    AuthRegisterResponse, AuthLoginResponse, GetMeResponse,
+    IssueApiTokenResponse, RotateApiTokenResponse, HealthResponse,
+    DeepHealthResponse,
 
     # Request types
-    RegisterAgentRequest,
+    RegisterAgentRequest, UpdateAgentRequest,
 )
 ```
 

elydora/_version.py

@@ -1,3 +1,3 @@
 """Canonical Elydora package version."""
 
-__version__ = "2.0.2"
+__version__ = "2.1.0"

elydora/plugins/_file_io.py

@@ -4,14 +4,15 @@ from __future__ import annotations
 
 import json
 import os
+import stat
 import tempfile
-from typing import Any, Dict
+from typing import Any, Dict, Optional
 
 
 JsonObject = Dict[str, Any]
 
 
-def _cleanup_failed_write(path: str, label: str, cause: Exception) -> None:
+def _cleanup_failed_write(path: str, label: str, cause: BaseException) -> None:
     if not path:
         return
     try:
@@ -47,7 +48,7 @@ def write_text_atomic(path: str, content: str, mode: int, label: str) -> None:
             os.fsync(file.fileno())
         os.chmod(temporary_path, mode)
         os.replace(temporary_path, path)
-    except Exception as error:
+    except BaseException as error:
         if descriptor >= 0:
             try:
                 os.close(descriptor)
@@ -58,8 +59,46 @@ def write_text_atomic(path: str, content: str, mode: int, label: str) -> None:
                     f"close failed: {close_error}"
                 ) from error
         _cleanup_failed_write(temporary_path, label, error)
-        raise OSError(f"Write {label} at {path}: {error}") from error
+        if isinstance(error, Exception):
+            raise OSError(f"Write {label} at {path}: {error}") from error
+        raise
 
 
 def write_json_atomic(path: str, value: JsonObject, mode: int, label: str) -> None:
     write_text_atomic(path, json.dumps(value, indent=2) + "\n", mode, label)
+
+
+def read_json(path: str, label: str) -> Optional[JsonObject]:
+    try:
+        with open(path, "r", encoding="utf-8") as file:
+            raw = file.read()
+    except FileNotFoundError:
+        return None
+    except OSError as error:
+        raise OSError(f"Read {label} at {path}: {error}") from error
+    try:
+        value = json.loads(raw)
+    except json.JSONDecodeError as error:
+        raise ValueError(f"Failed to parse {label} at {path}: {error}") from error
+    if not isinstance(value, dict):
+        raise ValueError(f"{label} at {path} must contain a JSON object")
+    return value
+
+
+def remove_file(path: str, label: str) -> None:
+    try:
+        os.remove(path)
+    except FileNotFoundError:
+        return
+    except OSError as error:
+        raise OSError(f"Remove {label} at {path}: {error}") from error
+
+
+def regular_file_exists(path: str, label: str) -> bool:
+    try:
+        metadata = os.stat(path)
+    except FileNotFoundError:
+        return False
+    except OSError as error:
+        raise OSError(f"Read {label} at {path}: {error}") from error
+    return stat.S_ISREG(metadata.st_mode)

elydora/plugins/_private_artifact.py

@@ -12,9 +12,12 @@ from ._managed_files import DirectorySnapshot, FileSnapshot
 from ._pinned_directory import PinnedDirectory
 
 
+_RMDIR_SUPPORTS_DIR_FD = os.rmdir in os.supports_dir_fd
+
+
 def _remove_posix_private_directory(parent_descriptor: int, name: str) -> None:
     """Remove one empty child through the platform's native *at semantics."""
-    if os.rmdir not in os.supports_dir_fd:
+    if not _RMDIR_SUPPORTS_DIR_FD:
         raise OSError("Host does not support identity-bound directory removal")
     os.rmdir(name, dir_fd=parent_descriptor)
 

elydora/plugins/_runtime.py

@@ -6,7 +6,7 @@ import base64
 from dataclasses import dataclass
 import json
 import os
-from typing import Any, List, Optional, Protocol, Tuple
+from typing import Any, Callable, Dict, List, Optional, Protocol, Sequence, Tuple
 import urllib.parse
 
 from elydora._runtime_paths import resolve_agent_directory, runtime_root
@@ -20,8 +20,10 @@ from ._managed_files import (
     read_physical_file,
 )
 from ._strict_json import JsonObject, parse_json_object
-from ._transaction import FileChange, file_change, source_change
+from ._transaction import FileChange, FilePrecondition, file_change, source_change
 from .base import InstallConfig
+from .guard_template import generate_guard_script
+from .hook_template import generate_hook_script
 
 
 GUARD_SCRIPT = "guard.py"
@@ -167,13 +169,16 @@ def validate_runtime_config(
     validate_api_origin(base_url, "Elydora runtime config base_url")
 
 
-def runtime_config_source(config: InstallConfig, agent_id: str, agent_key: str) -> str:
+def runtime_config_source(
+    config: InstallConfig, agent_id: str, agent_key: str, **extra: str
+) -> str:
     value = {
         "org_id": config.get("org_id", ""),
         "agent_id": agent_id,
         "kid": config.get("kid", ""),
         "base_url": config.get("base_url", DEFAULT_BASE_URL),
         "agent_name": agent_key,
+        **extra,
     }
     token = config.get("token")
     if token:
@@ -215,7 +220,11 @@ def validate_install_config(
 
 
 def validate_runtime_tree(
-    agent_directory: str, agent_id: str, agent_key: str, product_label: str
+    agent_directory: str,
+    agent_id: str,
+    agent_key: str,
+    product_label: str,
+    extra_artifacts: Tuple[Tuple[str, str], ...] = (),
 ) -> None:
     """Reject an existing agent directory that belongs to another identity."""
     if not physical_directory_exists(runtime_root(), "Elydora runtime directory"):
@@ -226,7 +235,7 @@ def validate_runtime_tree(
     config = read_runtime_config(config_path)
     artifact_states = [
         physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in RUNTIME_ARTIFACTS
+        for name, label in (*RUNTIME_ARTIFACTS, *extra_artifacts)
     ]
     artifact_exists = any(artifact_states)
     if config is None:
@@ -246,10 +255,42 @@ def validate_runtime_tree(
         )
 
 
+ExpectedScripts = Callable[[str, JsonObject], Tuple[str, str]]
+
+
+def expected_runtime_scripts(
+    agent_key: str,
+    agent_id: str,
+    config: Optional[JsonObject] = None,
+    **hook_options: Any,
+) -> Tuple[str, str]:
+    """Guard and audit sources; identity fields come from config when given."""
+    org_id, kid, base_url = (
+        ("", "", "")
+        if config is None
+        else (str(config["org_id"]), str(config["kid"]), str(config["base_url"]))
+    )
+    return (
+        generate_guard_script(agent_key, agent_id),
+        generate_hook_script(
+            org_id=org_id,
+            agent_id=agent_id,
+            kid=kid,
+            base_url=base_url,
+            native_payload=True,
+            agent_name=agent_key,
+            **hook_options,
+        ),
+    )
+
+
 def runtime_contract_exists(
-    contract: RuntimeContractLike, agent_key: str, product_label: str
+    contract: RuntimeContractLike,
+    agent_key: str,
+    product_label: str,
+    expected_scripts: Optional[ExpectedScripts] = None,
 ) -> bool:
-    """Strict status check: valid config and key plus non-empty runtime scripts."""
+    """Strict status check: valid config and key plus runtime scripts."""
     root = runtime_root()
     agent_directory = os.path.dirname(contract.guard_path)
     if not same_path(os.path.dirname(agent_directory), root) or not same_path(
@@ -271,7 +312,10 @@ def runtime_contract_exists(
         return False
     validate_runtime_config(config, contract.agent_id, config_path, agent_key, product_label)
     validate_private_key(key.contents, "Elydora private key")
-    return bool(guard.contents) and bool(audit.contents)
+    if expected_scripts is None:
+        return bool(guard.contents) and bool(audit.contents)
+    expected_guard, expected_audit = expected_scripts(contract.agent_id, config)
+    return guard.contents == expected_guard and audit.contents == expected_audit
 
 
 def runtime_present(contract: RuntimeContractLike, agent_key: str) -> bool:
@@ -336,3 +380,12 @@ def rendered_source_change(
     next_source: Optional[str],
 ) -> Optional[FileChange]:
     return source_change(file_path, label, original, next_source, 0o600, MAX_SOURCE_BYTES)
+
+
+def unique_preconditions(
+    values: Sequence[FilePrecondition],
+) -> Tuple[FilePrecondition, ...]:
+    result: Dict[str, FilePrecondition] = {}
+    for value in values:
+        result.setdefault(os.path.normcase(os.path.abspath(value.file_path)), value)
+    return tuple(result.values())

elydora/plugins/_shell_command.py

@@ -57,10 +57,11 @@ def encode_powershell_source(source: str) -> str:
     return base64.b64encode(source.encode("utf-16le")).decode("ascii")
 
 
-def encoded_windows_command(script_path: str) -> str:
+def encoded_windows_command(script_path: str, preamble: str = "") -> str:
+    encoded = encode_powershell_source(preamble + powershell_source(script_path))
     return (
         f'"{windows_powershell_path()}" -NoLogo -NoProfile -NonInteractive '
-        f"-EncodedCommand {encode_powershell_source(powershell_source(script_path))}"
+        f"-EncodedCommand {encoded}"
     )
 
 
@@ -141,11 +142,19 @@ def decode_powershell_source(encoded: str) -> Optional[str]:
         return None
 
 
+def same_windows_path(left: str, right: str) -> bool:
+    return ntpath.normcase(ntpath.abspath(left)) == ntpath.normcase(ntpath.abspath(right))
+
+
 def parse_encoded_windows_command(
-    command: str, prefix: str = "& "
+    command: str,
+    prefix: str = "& ",
+    powershell_path: Optional[str] = None,
 ) -> Optional[CommandParts]:
     match = _ENCODED_COMMAND.fullmatch(command)
     if match is None or not is_powershell_executable(match.group(1)):
         return None
+    if powershell_path is not None and not same_windows_path(match.group(1), powershell_path):
+        return None
     source = decode_powershell_source(match.group(2))
     return None if source is None else parse_powershell_source(source, prefix)

elydora/plugins/augment_contract.py

@@ -9,6 +9,9 @@ import os
 import sys
 from typing import Any, Dict, List, Optional, Set, Tuple
 
+from elydora._runtime_paths import runtime_root
+
+from ._runtime import same_agent_id, same_path
 from ._strict_json import parse_json_object
 
 
@@ -69,10 +72,6 @@ def home_dir() -> str:
     return os.path.expanduser("~")
 
 
-def elydora_dir() -> str:
-    return os.path.join(home_dir(), ".elydora")
-
-
 def resolve_config_path() -> str:
     return os.path.join(home_dir(), ".augment", "settings.json")
 
@@ -162,16 +161,6 @@ def _parse_wrapper_command(command: str) -> Optional[str]:
     return parser(command)
 
 
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def _same_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
 def _managed_agent_id(handler: JsonObject, wrapper_name: str) -> Optional[str]:
     if (
         handler.get("type") != "command"
@@ -188,7 +177,7 @@ def _managed_agent_id(handler: JsonObject, wrapper_name: str) -> Optional[str]:
     ):
         return None
     agent_directory = os.path.dirname(wrapper_path)
-    if not _same_path(os.path.dirname(agent_directory), elydora_dir()):
+    if not same_path(os.path.dirname(agent_directory), runtime_root()):
         return None
     agent_id = os.path.basename(agent_directory)
     return agent_id if agent_id not in {"", ".", ".."} else None
@@ -324,7 +313,7 @@ def _remove_managed(
         for handler in group["hooks"]:
             managed_id = _managed_agent_id(handler, wrapper_name)
             remove = managed_id is not None and (
-                not agent_id or _same_agent_id(managed_id, agent_id)
+                not agent_id or same_agent_id(managed_id, agent_id)
             )
             if remove:
                 changed = True
@@ -376,12 +365,12 @@ def runtime_contracts(hooks: AugmentHooks) -> List[RuntimeContract]:
     contracts: List[RuntimeContract] = []
     for guard_id in sorted(guards, key=os.path.normcase):
         audit_id = next(
-            (candidate for candidate in audits if _same_agent_id(candidate, guard_id)),
+            (candidate for candidate in audits if same_agent_id(candidate, guard_id)),
             None,
         )
         if audit_id is None:
             continue
-        agent_directory = os.path.join(elydora_dir(), guard_id)
+        agent_directory = os.path.join(runtime_root(), guard_id)
         contracts.append(
             RuntimeContract(
                 agent_id=guard_id,

elydora/plugins/augment_installation.py

@@ -3,107 +3,61 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-import json
-import os
-from typing import List, Optional
+from typing import List
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    validate_install_config,
+    validate_runtime_tree,
+)
 from ._transaction import FileChange, file_change, write_changes
 from .augment_contract import (
     AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
+    AUDIT_WRAPPER,
+    GUARD_WRAPPER,
     AugmentDocument,
     RenderedAugmentDocument,
     build_wrapper,
-    elydora_dir,
     wrapper_paths,
 )
-from .augment_io import (
-    rendered_change,
-    validate_api_origin,
-    validate_private_key,
-    validate_runtime_tree,
-)
+from .augment_io import rendered_change
 from .base import InstallConfig
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
 
+WRAPPER_ARTIFACTS = (
+    (GUARD_WRAPPER, "Auggie guard wrapper"),
+    (AUDIT_WRAPPER, "Auggie audit wrapper"),
+)
+
 
 @dataclass(frozen=True)
-class AugmentRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
+class AugmentRuntimePaths(RuntimePaths):
     guard_wrapper_path: str
     audit_wrapper_path: str
 
 
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
 def _agent_paths(config: InstallConfig) -> AugmentRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(elydora_dir(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not _same_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            f"Elydora guard runtime must use the managed agent directory: {guard_path}"
-        )
-    wrappers = wrapper_paths(agent_directory)
+    paths = resolve_runtime_paths(config)
+    wrappers = wrapper_paths(paths.agent_directory)
     return AugmentRuntimePaths(
-        agent_id,
-        agent_directory,
-        guard_path,
-        audit_path,
+        paths.agent_id,
+        paths.agent_directory,
+        paths.guard_path,
+        paths.audit_path,
         wrappers.guard_path,
         wrappers.audit_path,
     )
 
 
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(
-            f"Augment Code CLI installation requires agent_name {AGENT_KEY}"
-        )
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
+def _validate_runtime_tree(paths: AugmentRuntimePaths) -> None:
+    validate_runtime_tree(
+        paths.agent_directory, paths.agent_id, AGENT_KEY, "Auggie", WRAPPER_ARTIFACTS
+    )
 
 
 def preflight_augment_installation(
@@ -111,26 +65,12 @@ def preflight_augment_installation(
 ) -> AugmentRuntimePaths:
     if not document.config_path:
         raise ValueError("Augment Code CLI installation requires a settings path")
-    _validate_install_config(config)
+    validate_install_config(config, AGENT_KEY, "Augment Code CLI")
     paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    _validate_runtime_tree(paths)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
-def _present(changes: List[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_augment_installation(
     config: InstallConfig,
     paths: AugmentRuntimePaths,
@@ -138,54 +78,35 @@ def prepare_augment_installation(
 ) -> List[FileChange]:
     if not rendered.changed and rendered.document.raw is None:
         raise ValueError("Auggie hook installation did not produce a settings document")
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    _validate_runtime_tree(paths)
     guard_script = generate_guard_script(AGENT_KEY, paths.agent_id)
     audit_script = generate_hook_script(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    changes = _present(
-        [
-            _runtime_change(
-                paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "config.json"),
-                "Elydora runtime config",
-                _json_source(_runtime_config(config, paths.agent_id)),
-                0o600,
-                MAX_CONFIG_BYTES,
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "private.key"),
-                "Elydora private key",
-                config.get("private_key", ""),
-                0o600,
-                MAX_SECRET_BYTES,
-            ),
-            _runtime_change(
-                paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-            ),
-            _runtime_change(
+    changes = [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([
+            file_change(
                 paths.guard_wrapper_path,
                 "Auggie guard wrapper",
                 build_wrapper(paths.guard_path),
                 0o700,
             ),
-            _runtime_change(
+            file_change(
                 paths.audit_wrapper_path,
                 "Auggie audit wrapper",
                 build_wrapper(paths.audit_path),
                 0o700,
             ),
             rendered_change(rendered),
-        ]
-    )
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+        ]),
+    ]
+    _validate_runtime_tree(paths)
     return changes
 
 
@@ -193,10 +114,8 @@ def commit_augment_installation(changes: List[FileChange]) -> None:
     write_changes(changes, "Install Augment Code CLI hooks")
 
 
-def prepare_augment_uninstall(
-    rendered: RenderedAugmentDocument,
-) -> List[FileChange]:
-    return _present([rendered_change(rendered)])
+def prepare_augment_uninstall(rendered: RenderedAugmentDocument) -> List[FileChange]:
+    return present([rendered_change(rendered)])
 
 
 def commit_augment_uninstall(changes: List[FileChange]) -> None:

elydora/plugins/augment_io.py

@@ -2,61 +2,36 @@
 
 from __future__ import annotations
 
-import base64
 import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List, Optional
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
+from ._managed_files import MAX_CONFIG_BYTES, physical_directory_exists, read_physical_file
+from ._runtime import runtime_contract_exists, same_path
 from ._transaction import FileChange, source_change, write_changes
 from .augment_contract import (
     AGENT_KEY,
-    AUDIT_SCRIPT,
     AUDIT_WRAPPER,
-    GUARD_SCRIPT,
     GUARD_WRAPPER,
     AugmentDocument,
     RenderedAugmentDocument,
     RuntimeContract,
     build_wrapper,
     create_augment_document,
-    elydora_dir,
     parse_augment_document,
     resolve_config_path,
 )
 
 
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def _same_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
 def read_augment_document() -> AugmentDocument:
     config_path = resolve_config_path()
-    physical_directory_exists(
-        os.path.dirname(config_path), "Auggie configuration directory"
-    )
+    physical_directory_exists(os.path.dirname(config_path), "Auggie configuration directory")
     snapshot = read_physical_file(config_path, "Auggie user settings", MAX_CONFIG_BYTES)
     if snapshot is None:
         return create_augment_document(config_path)
     return parse_augment_document(config_path, snapshot.contents)
 
 
-def rendered_change(
-    rendered: RenderedAugmentDocument,
-) -> Optional[FileChange]:
+def rendered_change(rendered: RenderedAugmentDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
     return source_change(
@@ -75,192 +50,26 @@ def write_augment_document(rendered: RenderedAugmentDocument) -> None:
         write_changes([change], "Uninstall Augment Code CLI hooks")
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"), validate=True
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(f"Elydora runtime config {field} is invalid: {config_path}")
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject, expected_agent_id: str, config_path: str
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not _same_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime identity does not match Auggie hooks: {config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(file_path, "Elydora runtime config", MAX_CONFIG_BYTES)
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        (GUARD_SCRIPT, "Elydora guard runtime"),
-        (AUDIT_SCRIPT, "Elydora audit runtime"),
-        (GUARD_WRAPPER, "Auggie guard wrapper"),
-        (AUDIT_WRAPPER, "Auggie audit wrapper"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not _same_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Auggie agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _runtime_contract_exists(contract: RuntimeContract) -> bool:
-    root = elydora_dir()
+def _wrappers_exist(contract: RuntimeContract) -> bool:
     agent_directory = os.path.dirname(contract.guard_path)
-    if (
-        not _same_path(os.path.dirname(agent_directory), root)
-        or not _same_path(
-            contract.audit_path, os.path.join(agent_directory, AUDIT_SCRIPT)
-        )
-        or not _same_path(
-            contract.guard_wrapper_path,
-            os.path.join(agent_directory, GUARD_WRAPPER),
-        )
-        or not _same_path(
-            contract.audit_wrapper_path,
-            os.path.join(agent_directory, AUDIT_WRAPPER),
-        )
+    if not same_path(
+        contract.guard_wrapper_path, os.path.join(agent_directory, GUARD_WRAPPER)
+    ) or not same_path(
+        contract.audit_wrapper_path, os.path.join(agent_directory, AUDIT_WRAPPER)
     ):
         return False
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    guard_wrapper = read_physical_file(
-        contract.guard_wrapper_path, "Auggie guard wrapper"
-    )
-    audit_wrapper = read_physical_file(
-        contract.audit_wrapper_path, "Auggie audit wrapper"
-    )
-    if any(
-        item is None
-        for item in (config, key, guard, audit, guard_wrapper, audit_wrapper)
-    ):
-        return False
-    assert config is not None
-    assert key is not None
-    assert guard is not None
-    assert audit is not None
-    assert guard_wrapper is not None
-    assert audit_wrapper is not None
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
+    guard_wrapper = read_physical_file(contract.guard_wrapper_path, "Auggie guard wrapper")
+    audit_wrapper = read_physical_file(contract.audit_wrapper_path, "Auggie audit wrapper")
     return (
-        bool(guard.contents)
-        and bool(audit.contents)
+        guard_wrapper is not None
+        and audit_wrapper is not None
         and guard_wrapper.contents == build_wrapper(contract.guard_path)
         and audit_wrapper.contents == build_wrapper(contract.audit_path)
     )
 
 
 def augment_runtime_files_exist(contracts: List[RuntimeContract]) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)
+    return any(
+        runtime_contract_exists(contract, AGENT_KEY, "Auggie") and _wrappers_exist(contract)
+        for contract in contracts
+    )

elydora/plugins/cline_contract.py

@@ -8,7 +8,9 @@ import json
 import os
 from typing import Any, Dict, Optional
 
-from elydora._runtime_paths import resolve_agent_directory
+from elydora._runtime_paths import resolve_agent_directory, runtime_root
+
+from ._runtime import same_agent_id, same_path
 
 
 AGENT_KEY = "cline"
@@ -58,20 +60,6 @@ def home_dir() -> str:
     return os.path.expanduser("~")
 
 
-def elydora_dir() -> str:
-    return os.path.join(home_dir(), ".elydora")
-
-
-def same_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
 def resolve_hooks_directory() -> str:
     configured = os.environ.get("CLINE_DIR", "").strip()
     cline_directory = (
@@ -267,10 +255,10 @@ def runtime_contract(
         raise ValueError("Elydora Cline hook files contain mismatched event metadata")
     if not same_agent_id(guard.agent_id, audit.agent_id):
         raise ValueError("Elydora Cline hook files reference different agents")
-    agent_directory = resolve_agent_directory(elydora_dir(), guard.agent_id)
+    agent_directory = resolve_agent_directory(runtime_root(), guard.agent_id)
     expected_guard = os.path.join(agent_directory, GUARD_SCRIPT)
     expected_audit = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not _same_path(guard.runtime_path, expected_guard) or not _same_path(
+    if not same_path(guard.runtime_path, expected_guard) or not same_path(
         audit.runtime_path, expected_audit
     ):
         raise ValueError(

elydora/plugins/cline_installation.py

@@ -2,107 +2,42 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-import json
 import os
 import sys
 from typing import List, Optional, Sequence
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import FileChange, file_change, source_change, write_changes
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    same_agent_id,
+    same_path,
+    validate_install_config,
+    validate_runtime_tree,
+)
+from ._transaction import FileChange, source_change, write_changes
 from .base import InstallConfig
 from .cline_contract import (
     AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
     HookFile,
     assert_wrapper_integrity,
     build_metadata,
     build_wrapper,
-    elydora_dir,
     resolve_hook_files,
     runtime_contract,
-    same_agent_id,
-)
-from .cline_io import (
-    validate_api_origin,
-    validate_hook_tree,
-    validate_private_key,
-    validate_runtime_tree,
 )
+from .cline_io import validate_hook_tree
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
 
-
-@dataclass(frozen=True)
-class ClineRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
-
-
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> ClineRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(elydora_dir(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not _same_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            f"Elydora guard runtime must use the managed agent directory: {guard_path}"
-        )
-    return ClineRuntimePaths(agent_id, agent_directory, guard_path, audit_path)
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(f"Cline installation requires agent_name {AGENT_KEY}")
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    if not os.path.isabs(sys.executable):
-        raise RuntimeError("Cline requires an absolute Python executable path")
-    _agent_paths(config)
+PRODUCT = "Cline"
 
 
 def _validate_hook_files(guard_file: HookFile, audit_file: HookFile) -> None:
     expected = resolve_hook_files()
-    if not _same_path(guard_file.file_path, expected.guard_path) or not _same_path(
+    if not same_path(guard_file.file_path, expected.guard_path) or not same_path(
         audit_file.file_path, expected.audit_path
     ):
         raise ValueError("Cline installation received unexpected hook paths")
@@ -113,41 +48,23 @@ def preflight_cline_installation(
     config: InstallConfig,
     guard_file: HookFile,
     audit_file: HookFile,
-) -> ClineRuntimePaths:
-    _validate_install_config(config)
+) -> RuntimePaths:
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    if not os.path.isabs(sys.executable):
+        raise RuntimeError("Cline requires an absolute Python executable path")
     _validate_hook_files(guard_file, audit_file)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
 def _hook_change(
     file: HookFile, label: str, next_source: Optional[str]
 ) -> Optional[FileChange]:
     original = file.source if file.exists else None
     if file.exists and original is None:
         raise RuntimeError(f"{label} snapshot is missing source")
-    return source_change(
-        file.file_path,
-        label,
-        original,
-        next_source,
-        0o700,
-    )
-
-
-def _present(changes: Sequence[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
+    return source_change(file.file_path, label, original, next_source, 0o700)
 
 
 def prepare_cline_installation(
@@ -169,37 +86,18 @@ def prepare_cline_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    changes = _present(
-        (
-            _runtime_change(
-                paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "config.json"),
-                "Elydora runtime config",
-                _json_source(_runtime_config(config, paths.agent_id)),
-                0o600,
-                MAX_CONFIG_BYTES,
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "private.key"),
-                "Elydora private key",
-                config.get("private_key", ""),
-                0o600,
-                MAX_SECRET_BYTES,
-            ),
-            _runtime_change(
-                paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-            ),
+    changes = [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([
             _hook_change(guard_file, "Cline PreToolUse hook", guard_wrapper),
             _hook_change(audit_file, "Cline PostToolUse hook", audit_wrapper),
-        )
-    )
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+        ]),
+    ]
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     validate_hook_tree(os.path.dirname(guard_file.file_path))
     return changes
 
@@ -211,21 +109,14 @@ def commit_cline_installation(changes: Sequence[FileChange]) -> None:
 def prepare_cline_uninstall(
     files: Sequence[HookFile], agent_id: str = ""
 ) -> List[FileChange]:
-    owned = [
-        file
-        for file in files
-        if file.metadata is not None
-        and (not agent_id or same_agent_id(file.metadata.agent_id, agent_id))
-    ]
     changes: List[Optional[FileChange]] = []
-    for file in owned:
+    for file in files:
         metadata = file.metadata
-        assert metadata is not None
+        if metadata is None or (agent_id and not same_agent_id(metadata.agent_id, agent_id)):
+            continue
         assert_wrapper_integrity(file)
-        changes.append(
-            _hook_change(file, f"Cline {metadata.kind} hook", None)
-        )
-    return _present(changes)
+        changes.append(_hook_change(file, f"Cline {metadata.kind} hook", None))
+    return present(changes)
 
 
 def commit_cline_uninstall(changes: Sequence[FileChange]) -> None:

elydora/plugins/cline_io.py

@@ -2,43 +2,17 @@
 
 from __future__ import annotations
 
-import base64
 import os
-from typing import Any, Optional
-import urllib.parse
+from typing import Tuple
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
-from .cline_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    HookFile,
-    RuntimeContract,
-    elydora_dir,
-    parse_metadata,
-    same_agent_id,
-)
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
-
-
-def _same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
+from ._managed_files import physical_directory_exists, read_physical_file
+from ._runtime import expected_runtime_scripts, runtime_contract_exists
+from ._strict_json import JsonObject
+from .cline_contract import AGENT_KEY, HookFile, RuntimeContract, parse_metadata
 
 
 def validate_hook_tree(hooks_directory: str) -> None:
-    physical_directory_exists(
-        os.path.dirname(hooks_directory), "Cline configuration directory"
-    )
+    physical_directory_exists(os.path.dirname(hooks_directory), "Cline configuration directory")
     physical_directory_exists(hooks_directory, "Cline hooks directory")
 
 
@@ -63,194 +37,9 @@ def require_available_hook_file(file: HookFile) -> None:
         )
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"), validate=True
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(f"Elydora runtime config {field} is invalid: {config_path}")
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject, expected_agent_id: str, config_path: str
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not same_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime identity does not match Cline hooks: {config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        (GUARD_SCRIPT, "Elydora guard runtime"),
-        (AUDIT_SCRIPT, "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Cline agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _valid_contract_paths(contract: RuntimeContract) -> bool:
-    return (
-        _same_path(os.path.dirname(contract.agent_directory), elydora_dir())
-        and _same_path(
-            contract.guard_path,
-            os.path.join(contract.agent_directory, GUARD_SCRIPT),
-        )
-        and _same_path(
-            contract.audit_path,
-            os.path.join(contract.agent_directory, AUDIT_SCRIPT),
-        )
-    )
+def _expected_scripts(agent_id: str, _config: JsonObject) -> Tuple[str, str]:
+    return expected_runtime_scripts(AGENT_KEY, agent_id)
 
 
 def runtime_files_exist(contract: RuntimeContract) -> bool:
-    if not _valid_contract_paths(contract):
-        return False
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        contract.agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(contract.agent_directory, "config.json")
-    key_path = os.path.join(contract.agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if any(item is None for item in (config, key, guard, audit)):
-        return False
-    assert config is not None
-    assert key is not None
-    assert guard is not None
-    assert audit is not None
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    expected_audit = generate_hook_script(
-        org_id="",
-        agent_id=contract.agent_id,
-        kid="",
-        base_url="",
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
-    return (
-        guard.contents == generate_guard_script(AGENT_KEY, contract.agent_id)
-        and audit.contents == expected_audit
-    )
-
-
-__all__ = [
-    "read_hook_file",
-    "require_available_hook_file",
-    "runtime_files_exist",
-    "validate_api_origin",
-    "validate_hook_tree",
-    "validate_private_key",
-    "validate_runtime_tree",
-]
+    return runtime_contract_exists(contract, AGENT_KEY, "Cline", _expected_scripts)

elydora/plugins/copilot_contract.py

@@ -7,10 +7,19 @@ import json
 import os
 import re
 import shlex
-import sys
 from typing import Any, Dict, List, Optional, Tuple
 
+from elydora._runtime_paths import runtime_root
+
 from ._managed_files import FileSnapshot
+from ._runtime import same_agent_id, same_path
+from ._shell_command import (
+    is_python_executable,
+    parse_posix_command,
+    parse_powershell_source,
+    posix_source,
+    powershell_source,
+)
 from ._strict_json import parse_json_object
 from .copilot_schema import CopilotHooks, validate_hooks
 
@@ -69,124 +78,35 @@ class RuntimeContract:
     audit_path: str
 
 
-@dataclass(frozen=True)
-class _ParsedArgument:
-    value: str
-    next_index: int
-
-
 @dataclass(frozen=True)
 class _ManagedEntry:
     agent_id: str
     script_path: str
 
 
-def runtime_root() -> str:
-    return os.path.join(os.path.expanduser("~"), ".elydora")
-
-
-def same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
 def build_handler(script_path: str) -> JsonObject:
     return {
         "type": "command",
-        "bash": f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}",
-        "powershell": (
-            f"& {_quote_powershell(sys.executable)} "
-            f"{_quote_powershell(script_path)}; exit $LASTEXITCODE"
-        ),
+        "bash": posix_source(script_path),
+        "powershell": powershell_source(script_path),
         "timeoutSec": HOOK_TIMEOUT_SECONDS,
     }
 
 
-def _read_posix_argument(command: str, start: int) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return _ParsedArgument(value, index + 1)
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_generated_bash(command: Any) -> Optional[Tuple[str, str]]:
-    if not isinstance(command, str):
-        return None
-    executable = _read_posix_argument(command, 0)
-    if executable is None or command[executable.next_index:executable.next_index + 1] != " ":
-        return None
-    script = _read_posix_argument(command, executable.next_index + 1)
-    if script is None or script.next_index != len(command):
-        return None
-    return executable.value, script.value
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return _ParsedArgument(value, index + 1)
-    return None
-
-
-def _parse_generated_powershell(command: Any) -> Optional[Tuple[str, str]]:
-    if not isinstance(command, str) or not command.startswith("& "):
-        return None
-    executable = _read_powershell_argument(command, 2)
-    if executable is None or command[executable.next_index:executable.next_index + 1] != " ":
-        return None
-    script = _read_powershell_argument(command, executable.next_index + 1)
-    if script is None or command[script.next_index:] != "; exit $LASTEXITCODE":
-        return None
-    return executable.value, script.value
-
-
 def _exact_handler_keys(handler: JsonObject) -> bool:
     return set(handler) == {"type", "bash", "powershell", "timeoutSec"}
 
 
-def _is_python_executable(file_path: str) -> bool:
-    return os.path.isabs(file_path) and re.fullmatch(
-        r"(?:python|pypy)(?:[0-9]+(?:\.[0-9]+)*)?(?:\.exe)?",
-        os.path.basename(file_path),
-        re.IGNORECASE,
-    ) is not None
+def _parse_generated_bash(command: Any) -> Optional[Tuple[str, str]]:
+    return parse_posix_command(command) if isinstance(command, str) else None
+
+
+def _parse_generated_powershell(command: Any) -> Optional[Tuple[str, str]]:
+    return parse_powershell_source(command) if isinstance(command, str) else None
+
+
+def _absolute_python(file_path: str) -> bool:
+    return os.path.isabs(file_path) and is_python_executable(file_path)
 
 
 def _current_script_path(handler: JsonObject) -> Optional[str]:
@@ -201,7 +121,7 @@ def _current_script_path(handler: JsonObject) -> Optional[str]:
     if (
         bash is None
         or powershell is None
-        or not _is_python_executable(bash[0])
+        or not _absolute_python(bash[0])
         or not same_path(bash[0], powershell[0])
         or not same_path(bash[1], powershell[1])
     ):
@@ -227,7 +147,7 @@ def _prior_script_path(handler: JsonObject) -> Optional[str]:
         len(arguments) != 2
         or shlex.join(arguments) != bash_command
         or powershell is None
-        or not _is_python_executable(arguments[0])
+        or not _absolute_python(arguments[0])
         or not same_path(arguments[0], powershell[0])
         or not same_path(arguments[1], powershell[1])
     ):

elydora/plugins/copilot_installation.py

@@ -3,48 +3,29 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-import json
 import os
 import sys
-from typing import List, Optional, Sequence, Tuple
+from typing import Optional, Sequence, Tuple
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import (
-    FileChange,
-    FilePrecondition,
-    file_change,
-    source_change,
-    write_changes,
-)
-from .base import InstallConfig
-from .copilot_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    CopilotSources,
-    RenderedDocument,
-    runtime_root,
+from ._managed_files import MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    resolve_runtime_paths,
+    runtime_file_changes,
     same_path,
-)
-from .copilot_io import (
-    require_hooks_enabled,
-    validate_api_origin,
-    validate_private_key,
+    validate_install_config,
     validate_runtime_tree,
 )
+from ._transaction import FileChange, FilePrecondition, source_change, write_changes
+from .base import InstallConfig
+from .copilot_contract import AGENT_KEY, CopilotSources, RenderedDocument
+from .copilot_io import require_hooks_enabled
 from .copilot_schema import validate_javascript_regexes
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
 
-
-@dataclass(frozen=True)
-class CopilotRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
+PRODUCT = "GitHub Copilot CLI"
 
 
 @dataclass(frozen=True)
@@ -53,95 +34,25 @@ class PreparedCopilotInstallation:
     preconditions: Tuple[FilePrecondition, ...]
 
 
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> CopilotRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(runtime_root(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return CopilotRuntimePaths(
-        agent_id,
-        agent_directory,
-        guard_path,
-        audit_path,
-    )
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(
-            f"GitHub Copilot CLI installation requires agent_name {AGENT_KEY}"
-        )
-    if not os.path.isabs(sys.executable):
-        raise RuntimeError(
-            "GitHub Copilot CLI requires an absolute Python executable path"
-        )
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
-
-
 def preflight_copilot_installation(
     config: InstallConfig,
     sources: CopilotSources,
-) -> CopilotRuntimePaths:
+) -> RuntimePaths:
     if not sources.user.file_path:
-        raise ValueError(
-            "GitHub Copilot CLI installation requires a user hook path"
-        )
+        raise ValueError("GitHub Copilot CLI installation requires a user hook path")
     require_hooks_enabled(sources)
     hook_sources = [sources.user.hooks]
     if sources.legacy is not None:
         hook_sources.append(sources.legacy.hooks)
     validate_javascript_regexes(hook_sources)
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    if not os.path.isabs(sys.executable):
+        raise RuntimeError("GitHub Copilot CLI requires an absolute Python executable path")
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, "Copilot")
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
 def _document_change(rendered: RenderedDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
@@ -156,12 +67,6 @@ def _document_change(rendered: RenderedDocument) -> Optional[FileChange]:
     )
 
 
-def _present(
-    changes: Sequence[Optional[FileChange]],
-) -> Tuple[FileChange, ...]:
-    return tuple(change for change in changes if change is not None)
-
-
 def _document_preconditions(
     rendered: Sequence[RenderedDocument],
 ) -> Tuple[FilePrecondition, ...]:
@@ -177,16 +82,9 @@ def _document_preconditions(
     )
 
 
-def _settings_preconditions(
-    sources: CopilotSources,
-) -> Tuple[FilePrecondition, ...]:
+def _settings_preconditions(sources: CopilotSources) -> Tuple[FilePrecondition, ...]:
     return tuple(
-        FilePrecondition(
-            item.file_path,
-            item.label,
-            item.snapshot,
-            MAX_SOURCE_BYTES,
-        )
+        FilePrecondition(item.file_path, item.label, item.snapshot, MAX_SOURCE_BYTES)
         for item in sources.settings_preconditions
     )
 
@@ -206,9 +104,7 @@ def _validate_rendered_documents(
             if same_path(item.document.file_path, document.file_path)
         ]
         if len(matches) != 1:
-            raise ValueError(
-                "GitHub Copilot rendered source set contains unexpected paths"
-            )
+            raise ValueError("GitHub Copilot rendered source set contains unexpected paths")
 
 
 def prepare_copilot_installation(
@@ -223,33 +119,18 @@ def prepare_copilot_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    changes = _present((
-        _runtime_change(
-            paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "config.json"),
-            "Elydora runtime config",
-            _json_source(_runtime_config(config, paths.agent_id)),
-            0o600,
-            MAX_CONFIG_BYTES,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "private.key"),
-            "Elydora private key",
-            config.get("private_key", ""),
-            0o600,
-            MAX_SECRET_BYTES,
-        ),
-        _runtime_change(
-            paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-        ),
-        *(_document_change(item) for item in rendered),
-    ))
+    document_changes = [
+        change for change in (_document_change(item) for item in rendered)
+        if change is not None
+    ]
+    changes = (
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *document_changes,
+    )
     preconditions = (
         *_settings_preconditions(sources),
         *_document_preconditions(rendered),
@@ -257,20 +138,17 @@ def prepare_copilot_installation(
     return PreparedCopilotInstallation(changes, preconditions)
 
 
-def commit_copilot_installation(
-    prepared: PreparedCopilotInstallation,
-) -> None:
-    write_changes(
-        prepared.changes,
-        "Install GitHub Copilot hooks",
-        prepared.preconditions,
-    )
+def commit_copilot_installation(prepared: PreparedCopilotInstallation) -> None:
+    write_changes(prepared.changes, "Install GitHub Copilot hooks", prepared.preconditions)
 
 
 def prepare_copilot_uninstall(
     rendered: Sequence[RenderedDocument],
 ) -> Tuple[FileChange, ...]:
-    return _present(tuple(_document_change(item) for item in rendered))
+    return tuple(
+        change for change in (_document_change(item) for item in rendered)
+        if change is not None
+    )
 
 
 def commit_copilot_uninstall(changes: Sequence[FileChange]) -> None:

elydora/plugins/copilot_io.py

@@ -2,40 +2,29 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
 import os
-from typing import Any, List, Optional, Tuple
-import urllib.parse
+from typing import List, Optional, Tuple
 
 from ._jsonc import parse_jsonc
 from ._managed_files import (
     FileSnapshot,
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
     MAX_SOURCE_BYTES,
     physical_directory_exists,
-    physical_file_exists,
     read_physical_file,
 )
+from ._runtime import expected_runtime_scripts, runtime_contract_exists
 from ._strict_json import JsonObject, parse_json_object
 from .copilot_contract import (
     AGENT_KEY,
-    AUDIT_SCRIPT,
     CONFIG_FILE,
-    GUARD_SCRIPT,
     CopilotDocument,
     CopilotSources,
     RuntimeContract,
     SourcePrecondition,
     create_document,
     parse_document,
-    runtime_root,
-    same_agent_id,
-    same_path,
 )
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
 
 
 @dataclass(frozen=True)
@@ -216,186 +205,17 @@ def require_hooks_enabled(sources: CopilotSources) -> None:
         )
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(
-            f"{label} must be an absolute HTTP or HTTPS URL"
-        ) from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"),
-            validate=True,
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject,
-    contract: RuntimeContract,
-    config_path: str,
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_string(config.get("org_id"), "org_id", config_path)
-    _require_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_string(config.get("agent_id"), "agent_id", config_path)
-    if (
-        not same_agent_id(agent_id, contract.agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime identity does not match Copilot hooks: {config_path}"
-        )
-    if "token" in config:
-        _require_string(config.get("token"), "token", config_path)
-    base_url = _require_string(config.get("base_url"), "base_url", config_path)
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = runtime_root()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        (GUARD_SCRIPT, "Elydora guard runtime"),
-        (AUDIT_SCRIPT, "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Copilot agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _valid_contract_paths(contract: RuntimeContract) -> bool:
-    agent_directory = os.path.dirname(contract.guard_path)
-    return (
-        same_path(os.path.dirname(agent_directory), runtime_root())
-        and same_path(
-            contract.guard_path,
-            os.path.join(agent_directory, GUARD_SCRIPT),
-        )
-        and same_path(
-            contract.audit_path,
-            os.path.join(agent_directory, AUDIT_SCRIPT),
-        )
-    )
-
-
-def _runtime_contract_exists(contract: RuntimeContract) -> bool:
-    if not _valid_contract_paths(contract):
-        return False
-    root = runtime_root()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    expected_guard = generate_guard_script(AGENT_KEY, contract.agent_id)
-    expected_audit = generate_hook_script(
-        org_id="",
-        agent_id=contract.agent_id,
-        kid="",
-        base_url="",
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
-    return guard.contents == expected_guard and audit.contents == expected_audit
+def _expected_scripts(agent_id: str, _config: JsonObject) -> Tuple[str, str]:
+    return expected_runtime_scripts(AGENT_KEY, agent_id)
 
 
 def runtime_files_exist(contracts: List[RuntimeContract]) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)
+    return any(
+        runtime_contract_exists(
+            contract,
+            AGENT_KEY,
+            "Copilot",
+            _expected_scripts,
+        )
+        for contract in contracts
+    )

elydora/plugins/droid_config.py

@@ -8,13 +8,13 @@ from typing import Dict, List, Optional, Tuple
 
 from ._jsonc import JsonPathPart, JsoncEditor
 from ._managed_files import FileSnapshot
+from ._runtime import same_path
 from .droid_contract import (
     TOOL_EVENTS,
     DroidHookMap,
     JsonObject,
     managed_removals,
     read_hook_map,
-    same_path,
 )
 from .droid_policy import DroidPolicyState
 

elydora/plugins/droid_contract.py

@@ -12,6 +12,16 @@ import subprocess  # nosec B404
 import sys
 from typing import Any, Dict, List, Optional, Sequence, Set, Tuple
 
+from elydora._runtime_paths import runtime_root
+
+from ._runtime import managed_script_reference, same_agent_id, same_path
+from ._shell_command import (
+    parse_posix_command,
+    parse_powershell_source,
+    posix_source,
+    powershell_source,
+)
+
 
 AGENT_KEY = "droid"
 GUARD_SCRIPT = "guard.py"
@@ -22,7 +32,6 @@ TOOL_EVENTS = ("PreToolUse", "PostToolUse")
 _HANDLER_KEYS = {"command", "timeout", "type"}
 _GROUP_KEYS = {"hooks", "matcher"}
 _REGEX_TIMEOUT_SECONDS = 10
-_WINDOWS_EXIT_SUFFIX = "; exit $LASTEXITCODE"
 _REGEX_VALIDATOR = """import fs from 'node:fs';
 const entries = JSON.parse(fs.readFileSync(0, 'utf8'));
 for (const entry of entries) {
@@ -55,39 +64,14 @@ class ManagedRemoval:
     remove_group: bool
 
 
-def elydora_dir() -> str:
-    return os.path.join(os.path.expanduser("~"), ".elydora")
-
-
-def same_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_power_shell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
 def build_command(script_path: str) -> str:
     if not os.path.isabs(sys.executable) or not os.path.isabs(script_path):
         raise ValueError(
             "Factory Droid hook commands require absolute executable and script paths"
         )
     if os.name == "nt":
-        return (
-            f"& {_quote_power_shell(sys.executable)} "
-            f"{_quote_power_shell(script_path)}{_WINDOWS_EXIT_SUFFIX}"
-        )
-    return f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
+        return powershell_source(script_path)
+    return posix_source(script_path)
 
 
 def build_group(script_path: str) -> JsonObject:
@@ -214,83 +198,6 @@ def validate_javascript_regexes(sources: Sequence[DroidHookMap]) -> None:
     )
 
 
-def _read_power_shell_argument(
-    command: str,
-    start: int,
-) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return value, index + 1
-    return None
-
-
-_POSIX_APOSTROPHE = "'\"'\"'"
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(_POSIX_APOSTROPHE, index):
-            value += "'"
-            index += len(_POSIX_APOSTROPHE)
-            continue
-        if command[index] == "'":
-            return value, index + 1
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_two_arguments(
-    command: str,
-    start: int,
-) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, start)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_posix_argument(command, executable[1] + 1)
-    if script is None or script[1] != len(command):
-        return None
-    if not executable[0] or not script[0]:
-        return None
-    return executable[0], script[0]
-
-
-def _parse_power_shell_command(command: str) -> Optional[Tuple[str, str]]:
-    if not command.startswith("& "):
-        return None
-    executable = _read_power_shell_argument(command, 2)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_power_shell_argument(command, executable[1] + 1)
-    if (
-        script is None
-        or command[script[1]:] != _WINDOWS_EXIT_SUFFIX
-        or not executable[0]
-        or not script[0]
-    ):
-        return None
-    return executable[0], script[0]
-
-
 def _parse_legacy_windows_command(command: str) -> Optional[Tuple[str, str]]:
     match = re.fullmatch(r'"([^"\r\n]+)" "([^"\r\n]+)"', command)
     return (match.group(1), match.group(2)) if match else None
@@ -301,8 +208,8 @@ def _parse_generated_command(
     include_legacy: bool,
 ) -> Optional[Tuple[str, str]]:
     if os.name != "nt":
-        return _parse_two_arguments(command, 0)
-    current = _parse_power_shell_command(command)
+        return parse_posix_command(command)
+    current = parse_powershell_source(command)
     return current or (
         _parse_legacy_windows_command(command) if include_legacy else None
     )
@@ -326,14 +233,8 @@ def managed_agent_id(
     parsed = _parse_generated_command(command, include_legacy)
     if parsed is None or not same_path(parsed[0], sys.executable):
         return None
-    script_path = parsed[1]
-    if os.path.basename(script_path) != script_name:
-        return None
-    agent_directory = os.path.dirname(script_path)
-    if not same_path(os.path.dirname(agent_directory), elydora_dir()):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    return agent_id if agent_id not in {"", ".", ".."} else None
+    reference = managed_script_reference(parsed[1], script_name)
+    return None if reference is None else reference[0]
 
 
 def _exact_owned_group(group: JsonObject, indexes: Tuple[int, ...]) -> bool:
@@ -397,7 +298,7 @@ def runtime_contracts(hooks: DroidHookMap) -> List[RuntimeContract]:
     for agent_id in sorted(guards):
         if not any(same_agent_id(agent_id, audit_id) for audit_id in audits):
             continue
-        root = os.path.join(elydora_dir(), agent_id)
+        root = os.path.join(runtime_root(), agent_id)
         contracts.append(RuntimeContract(
             agent_id,
             os.path.join(root, GUARD_SCRIPT),

elydora/plugins/droid_installation.py

@@ -3,21 +3,21 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-import json
 import os
 import sys
 from typing import Optional, Sequence, Tuple
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import (
-    FileChange,
-    FilePrecondition,
-    file_change,
-    source_change,
-    write_changes,
+from ._managed_files import MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    same_path,
+    validate_install_config,
+    validate_runtime_tree,
 )
+from ._transaction import FileChange, FilePrecondition, source_change, write_changes
 from .base import InstallConfig
 from .droid_config import (
     DroidDocument,
@@ -26,30 +26,12 @@ from .droid_config import (
     installation_documents,
     source_documents,
 )
-from .droid_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    elydora_dir,
-    same_path,
-    validate_javascript_regexes,
-)
-from .droid_io import (
-    require_hooks_enabled,
-    validate_api_origin,
-    validate_private_key,
-    validate_runtime_tree,
-)
+from .droid_contract import AGENT_KEY, validate_javascript_regexes
+from .droid_io import require_hooks_enabled
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
 
-
-@dataclass(frozen=True)
-class DroidRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
+PRODUCT = "Factory Droid"
 
 
 @dataclass(frozen=True)
@@ -74,90 +56,20 @@ def _source_label(document: DroidDocument) -> str:
     return "Factory Droid user hooks"
 
 
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> DroidRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(elydora_dir(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return DroidRuntimePaths(
-        agent_id,
-        agent_directory,
-        guard_path,
-        audit_path,
-    )
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(
-            f"Factory Droid installation requires agent_name {AGENT_KEY}"
-        )
-    if not os.path.isabs(sys.executable):
-        raise RuntimeError(
-            "Factory Droid requires an absolute Python executable path"
-        )
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
-
-
 def preflight_droid_installation(
     config: InstallConfig,
     sources: DroidSources,
-) -> DroidRuntimePaths:
+) -> RuntimePaths:
     require_hooks_enabled(sources)
-    validate_javascript_regexes([
-        document.hooks for document in source_documents(sources)
-    ])
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_javascript_regexes([document.hooks for document in source_documents(sources)])
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    if not os.path.isabs(sys.executable):
+        raise RuntimeError("Factory Droid requires an absolute Python executable path")
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
 def _document_change(rendered: RenderedDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
@@ -173,10 +85,11 @@ def _document_change(rendered: RenderedDocument) -> Optional[FileChange]:
     )
 
 
-def _present(
-    changes: Sequence[Optional[FileChange]],
-) -> Tuple[FileChange, ...]:
-    return tuple(change for change in changes if change is not None)
+def _document_changes(rendered: Sequence[RenderedDocument]) -> Tuple[FileChange, ...]:
+    return tuple(
+        change for change in (_document_change(item) for item in rendered)
+        if change is not None
+    )
 
 
 def _validate_rendered_documents(
@@ -188,18 +101,15 @@ def _validate_rendered_documents(
         raise ValueError("Factory Droid rendered source set is incomplete")
     for document in expected:
         matches = [
-            item
-            for item in rendered
+            item for item in rendered
             if same_path(item.document.file_path, document.file_path)
         ]
         if len(matches) != 1:
-            raise ValueError(
-                "Factory Droid rendered source set contains unexpected paths"
-            )
+            raise ValueError("Factory Droid rendered source set contains unexpected paths")
 
 
-def _source_preconditions(
-    sources: DroidSources,
+def _unchanged_preconditions(
+    documents: Sequence[DroidDocument],
     changed_paths: Sequence[str],
 ) -> Tuple[FilePrecondition, ...]:
     return tuple(
@@ -209,11 +119,8 @@ def _source_preconditions(
             document.snapshot,
             MAX_SOURCE_BYTES,
         )
-        for document in source_documents(sources)
-        if not any(
-            same_path(document.file_path, changed)
-            for changed in changed_paths
-        )
+        for document in documents
+        if not any(same_path(document.file_path, changed) for changed in changed_paths)
     )
 
 
@@ -229,84 +136,35 @@ def prepare_droid_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    document_changes = _present(tuple(
-        _document_change(item) for item in rendered
-    ))
-    changes = _present((
-        _runtime_change(
-            paths.guard_path,
-            "Elydora guard runtime",
-            guard_script,
-            0o700,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "config.json"),
-            "Elydora runtime config",
-            _json_source(_runtime_config(config, paths.agent_id)),
-            0o600,
-            MAX_CONFIG_BYTES,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "private.key"),
-            "Elydora private key",
-            config.get("private_key", ""),
-            0o600,
-            MAX_SECRET_BYTES,
-        ),
-        _runtime_change(
-            paths.audit_path,
-            "Elydora audit runtime",
-            audit_script,
-            0o700,
-        ),
+    document_changes = _document_changes(rendered)
+    changes = (
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
         *document_changes,
-    ))
+    )
     changed_paths = [change.file_path for change in document_changes]
     preconditions = (
-        *_source_preconditions(sources, changed_paths),
+        *_unchanged_preconditions(source_documents(sources), changed_paths),
         *sources.policy.preconditions,
     )
-    return PreparedDroidInstallation(changes, tuple(preconditions))
+    return PreparedDroidInstallation(changes, preconditions)
 
 
-def commit_droid_installation(
-    prepared: PreparedDroidInstallation,
-) -> None:
-    write_changes(
-        prepared.changes,
-        "Install Factory Droid hooks",
-        prepared.preconditions,
-    )
+def commit_droid_installation(prepared: PreparedDroidInstallation) -> None:
+    write_changes(prepared.changes, "Install Factory Droid hooks", prepared.preconditions)
 
 
 def prepare_droid_uninstall(
     rendered: Sequence[RenderedDocument],
 ) -> PreparedDroidUninstall:
-    changes = _present(tuple(_document_change(item) for item in rendered))
+    changes = _document_changes(rendered)
     changed_paths = [change.file_path for change in changes]
-    preconditions = tuple(
-        FilePrecondition(
-            item.document.file_path,
-            _source_label(item.document),
-            item.document.snapshot,
-            MAX_SOURCE_BYTES,
-        )
-        for item in rendered
-        if not any(
-            same_path(item.document.file_path, changed)
-            for changed in changed_paths
-        )
-    )
-    return PreparedDroidUninstall(changes, preconditions)
+    documents = [item.document for item in rendered]
+    return PreparedDroidUninstall(changes, _unchanged_preconditions(documents, changed_paths))
 
 
 def commit_droid_uninstall(prepared: PreparedDroidUninstall) -> None:
-    write_changes(
-        prepared.changes,
-        "Uninstall Factory Droid hooks",
-        prepared.preconditions,
-    )
+    write_changes(prepared.changes, "Uninstall Factory Droid hooks", prepared.preconditions)

elydora/plugins/droid_io.py

@@ -2,21 +2,13 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
 import os
-from typing import Any, Optional
-import urllib.parse
+from typing import List, Optional, Tuple
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    MAX_SOURCE_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
+from ._managed_files import MAX_SOURCE_BYTES, physical_directory_exists, read_physical_file
+from ._runtime import expected_runtime_scripts, runtime_contract_exists
+from ._strict_json import JsonObject
 from .droid_config import (
     DroidDocument,
     DroidSources,
@@ -27,18 +19,8 @@ from .droid_config import (
     hook_block,
     parse_document,
 )
-from .droid_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    RuntimeContract,
-    elydora_dir,
-    same_agent_id,
-    same_path,
-)
+from .droid_contract import AGENT_KEY, RuntimeContract
 from .droid_policy import read_droid_policy
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
 
 
 @dataclass(frozen=True)
@@ -128,196 +110,20 @@ def require_hooks_enabled(sources: DroidSources) -> None:
         )
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(
-            f"{label} must be an absolute HTTP or HTTPS URL"
-        ) from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
+def _expected_scripts(agent_id: str, _config: JsonObject) -> Tuple[str, str]:
+    return expected_runtime_scripts(AGENT_KEY, agent_id)
+
+
+def runtime_files_exist(contracts: List[RuntimeContract]) -> bool:
+    return any(
+        runtime_contract_exists(
+            contract,
+            AGENT_KEY,
+            "Factory Droid",
+            _expected_scripts,
+        )
+        for contract in contracts
     )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"),
-            validate=True,
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject,
-    contract: RuntimeContract,
-    config_path: str,
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": '
-            f"{config_path}"
-        )
-    _require_string(config.get("org_id"), "org_id", config_path)
-    _require_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_string(config.get("agent_id"), "agent_id", config_path)
-    if (
-        not same_agent_id(agent_id, contract.agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime identity does not match Factory Droid hooks: "
-            f"{config_path}"
-        )
-    if "token" in config:
-        _require_string(config.get("token"), "token", config_path)
-    base_url = _require_string(config.get("base_url"), "base_url", config_path)
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path,
-        "Elydora runtime config",
-        MAX_CONFIG_BYTES,
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents,
-        f"Elydora runtime config at {file_path}",
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory,
-        "Elydora agent runtime directory",
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        (GUARD_SCRIPT, "Elydora guard runtime"),
-        (AUDIT_SCRIPT, "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Factory Droid agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _valid_contract_paths(contract: RuntimeContract) -> bool:
-    agent_directory = os.path.dirname(contract.guard_path)
-    return (
-        same_path(os.path.dirname(agent_directory), elydora_dir())
-        and same_path(
-            contract.guard_path,
-            os.path.join(agent_directory, GUARD_SCRIPT),
-        )
-        and same_path(
-            contract.audit_path,
-            os.path.join(agent_directory, AUDIT_SCRIPT),
-        )
-    )
-
-
-def _runtime_contract_exists(contract: RuntimeContract) -> bool:
-    if not _valid_contract_paths(contract):
-        return False
-    root = elydora_dir()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory,
-        "Elydora agent runtime directory",
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    expected_guard = generate_guard_script(AGENT_KEY, contract.agent_id)
-    expected_audit = generate_hook_script(
-        org_id="",
-        agent_id=contract.agent_id,
-        kid="",
-        base_url="",
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
-    return guard.contents == expected_guard and audit.contents == expected_audit
-
-
-def runtime_files_exist(contracts: list[RuntimeContract]) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)
 
 
 def display_config_path(sources: DroidSources) -> str:

elydora/plugins/grok_command.py

@@ -2,16 +2,23 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
-import ntpath
 import os
 import re
 import shlex
-import subprocess  # nosec B404 - used only for legacy command rendering
+import subprocess
 import sys
 from typing import Optional, Tuple
 
+from ._runtime import managed_script_reference
+from ._shell_command import (
+    encoded_windows_command,
+    is_python_executable,
+    parse_encoded_windows_command,
+    parse_posix_command,
+    posix_source,
+)
+
 
 @dataclass(frozen=True)
 class GrokRuntimeReference:
@@ -19,154 +26,14 @@ class GrokRuntimeReference:
     script_path: str
 
 
-@dataclass(frozen=True)
-class _ParsedArgument:
-    value: str
-    next_index: int
-
-
-def runtime_root() -> str:
-    return os.path.join(os.path.expanduser("~"), ".elydora")
-
-
-def same_grok_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_grok_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
-def _windows_powershell_path() -> str:
-    configured = os.environ.get("SystemRoot") if os.name == "nt" else None
-    system_root = (
-        configured
-        if configured
-        and ntpath.isabs(configured)
-        and re.search(r'["%\r\n]', configured) is None
-        else r"C:\Windows"
-    )
-    return ntpath.join(
-        system_root,
-        "System32",
-        "WindowsPowerShell",
-        "v1.0",
-        "powershell.exe",
-    )
-
-
-def _windows_command(script_path: str) -> str:
-    source = (
-        f"& {_quote_powershell(sys.executable)} "
-        f"{_quote_powershell(script_path)}; exit $LASTEXITCODE"
-    )
-    encoded = base64.b64encode(source.encode("utf-16le")).decode("ascii")
-    return (
-        f'"{_windows_powershell_path()}" -NoLogo -NoProfile '
-        f"-NonInteractive -EncodedCommand {encoded}"
-    )
-
-
 def build_grok_command(script_path: str) -> str:
     if not os.path.isabs(sys.executable) or not os.path.isabs(script_path):
         raise ValueError(
             "Grok hook commands require absolute executable and script paths"
         )
     if os.name == "nt":
-        return _windows_command(script_path)
-    return f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return _ParsedArgument(value, index + 1)
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_posix_command(command: str) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, 0)
-    if executable is None or command[executable.next_index : executable.next_index + 1] != " ":
-        return None
-    script = _read_posix_argument(command, executable.next_index + 1)
-    if script is None or script.next_index != len(command):
-        return None
-    return executable.value, script.value
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return _ParsedArgument(value, index + 1)
-    return None
-
-
-def _parse_powershell_source(source: str) -> Optional[Tuple[str, str]]:
-    if not source.startswith("& "):
-        return None
-    executable = _read_powershell_argument(source, 2)
-    if executable is None or source[executable.next_index : executable.next_index + 1] != " ":
-        return None
-    script = _read_powershell_argument(source, executable.next_index + 1)
-    if script is None or source[script.next_index :] != "; exit $LASTEXITCODE":
-        return None
-    return executable.value, script.value
-
-
-def _parse_windows_command(command: str) -> Optional[Tuple[str, str]]:
-    match = re.fullmatch(
-        r'"([^"\r\n]+)" -NoLogo -NoProfile -NonInteractive '
-        r"-EncodedCommand ([A-Za-z0-9+/]+={0,2})",
-        command,
-    )
-    if (
-        match is None
-        or not ntpath.isabs(match.group(1))
-        or ntpath.basename(match.group(1)).lower() != "powershell.exe"
-    ):
-        return None
-    try:
-        raw = base64.b64decode(match.group(2), validate=True)
-        if base64.b64encode(raw).decode("ascii") != match.group(2):
-            return None
-        source = raw.decode("utf-16le")
-    except (UnicodeDecodeError, ValueError):
-        return None
-    return _parse_powershell_source(source)
+        return encoded_windows_command(script_path)
+    return posix_source(script_path)
 
 
 def _parse_legacy_posix_command(command: str) -> Optional[Tuple[str, str]]:
@@ -193,40 +60,19 @@ def _parse_legacy_windows_command(command: str) -> Optional[Tuple[str, str]]:
     return arguments[0], arguments[1]
 
 
-def _is_python_executable(file_path: str) -> bool:
-    return (
-        re.fullmatch(
-            r"python(?:[0-9]+(?:\.[0-9]+)*)?(?:\.exe)?",
-            os.path.basename(file_path),
-            re.IGNORECASE,
-        )
-        is not None
-    )
-
-
 def grok_runtime_reference(
     command: str, script_name: str
 ) -> Optional[GrokRuntimeReference]:
     parsed = (
-        _parse_posix_command(command)
-        or _parse_windows_command(command)
+        parse_posix_command(command)
+        or parse_encoded_windows_command(command)
         or _parse_legacy_posix_command(command)
         or _parse_legacy_windows_command(command)
     )
     if parsed is None:
         return None
     executable, script_path = parsed
-    if (
-        not os.path.isabs(executable)
-        or not os.path.isabs(script_path)
-        or not _is_python_executable(executable)
-        or os.path.basename(script_path) != script_name
-    ):
+    if not os.path.isabs(executable) or not is_python_executable(executable):
         return None
-    agent_directory = os.path.dirname(script_path)
-    if not same_grok_path(os.path.dirname(agent_directory), runtime_root()):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    if agent_id in {"", ".", ".."}:
-        return None
-    return GrokRuntimeReference(agent_id, script_path)
+    reference = managed_script_reference(script_path, script_name)
+    return None if reference is None else GrokRuntimeReference(*reference)

elydora/plugins/grok_contract.py

@@ -7,13 +7,12 @@ import json
 import os
 from typing import Any, Dict, List, Optional, Tuple
 
+from ._runtime import same_agent_id, same_path
 from ._strict_json import JsonObject, parse_json_object
 from .grok_command import (
     GrokRuntimeReference,
     build_grok_command,
     grok_runtime_reference,
-    same_grok_agent_id,
-    same_grok_path,
 )
 
 
@@ -183,7 +182,7 @@ def _remove_from_groups(
         for handler in group["hooks"]:
             reference = _managed_reference(handler, script_name)
             remove = reference is not None and (
-                not agent_id or same_grok_agent_id(reference.agent_id, agent_id)
+                not agent_id or same_agent_id(reference.agent_id, agent_id)
             )
             if not remove:
                 kept.append(handler)
@@ -286,7 +285,7 @@ def grok_runtime_contracts(hooks: GrokHooks) -> List[GrokRuntimeContract]:
         failure = failures.get(key, [])
         if len(guard) != 1 or len(success) != 1 or len(failure) != 1:
             continue
-        if not same_grok_path(success[0].script_path, failure[0].script_path):
+        if not same_path(success[0].script_path, failure[0].script_path):
             continue
         contracts.append(GrokRuntimeContract(
             agent_id=guard[0].agent_id,

elydora/plugins/grok_installation.py

@@ -2,169 +2,56 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-import json
-import os
-from typing import List, Optional
+from typing import List
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import FileChange, file_change, source_change, write_changes
-from .base import InstallConfig
-from .grok_command import runtime_root, same_grok_path
-from .grok_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    GrokDocument,
-    RenderedGrokDocument,
-)
-from .grok_io import (
-    validate_api_origin,
-    validate_private_key,
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    validate_install_config,
     validate_runtime_tree,
 )
+from ._transaction import FileChange, write_changes
+from .base import InstallConfig
+from .grok_contract import AGENT_KEY, GrokDocument, RenderedGrokDocument
+from .grok_io import rendered_change
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
 
-
-@dataclass(frozen=True)
-class GrokRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> GrokRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(runtime_root(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_grok_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return GrokRuntimePaths(agent_id, agent_directory, guard_path, audit_path)
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(f"Grok installation requires agent_name {AGENT_KEY}")
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
+PRODUCT = "Grok"
 
 
 def preflight_grok_installation(
     config: InstallConfig, document: GrokDocument
-) -> GrokRuntimePaths:
+) -> RuntimePaths:
     if not document.config_path:
         raise ValueError("Grok installation requires a hook configuration path")
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
-def rendered_change(
-    rendered: RenderedGrokDocument,
-) -> Optional[FileChange]:
-    if not rendered.changed:
-        return None
-    return source_change(
-        rendered.document.config_path,
-        "Grok user hooks",
-        rendered.document.raw,
-        rendered.next_source,
-        0o600,
-        MAX_SOURCE_BYTES,
-    )
-
-
-def _present(changes: List[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_grok_installation(
     config: InstallConfig,
-    paths: GrokRuntimePaths,
+    paths: RuntimePaths,
     rendered: RenderedGrokDocument,
 ) -> List[FileChange]:
-    guard_script = generate_guard_script(
-        AGENT_KEY, paths.agent_id, deny_protocol="grok"
-    )
+    guard_script = generate_guard_script(AGENT_KEY, paths.agent_id, deny_protocol="grok")
     audit_script = generate_hook_script(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    return _present([
-        _runtime_change(
-            paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "config.json"),
-            "Elydora runtime config",
-            _json_source(_runtime_config(config, paths.agent_id)),
-            0o600,
-            MAX_CONFIG_BYTES,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "private.key"),
-            "Elydora private key",
-            config.get("private_key", ""),
-            0o600,
-            MAX_SECRET_BYTES,
-        ),
-        _runtime_change(
-            paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-        ),
-        rendered_change(rendered),
-    ])
+    return [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([rendered_change(rendered)]),
+    ]
 
 
 def commit_grok_installation(changes: List[FileChange]) -> None:
@@ -172,7 +59,7 @@ def commit_grok_installation(changes: List[FileChange]) -> None:
 
 
 def prepare_grok_uninstall(rendered: RenderedGrokDocument) -> List[FileChange]:
-    return _present([rendered_change(rendered)])
+    return present([rendered_change(rendered)])
 
 
 def commit_grok_uninstall(changes: List[FileChange]) -> None:

elydora/plugins/grok_io.py

@@ -2,24 +2,17 @@
 
 from __future__ import annotations
 
-import base64
 import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List, Optional
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
-from .grok_command import runtime_root, same_grok_agent_id, same_grok_path
+from ._managed_files import physical_directory_exists, read_physical_file
+from ._runtime import rendered_source_change, runtime_contract_exists
+from ._transaction import FileChange
 from .grok_contract import (
     AGENT_KEY,
     GrokDocument,
     GrokRuntimeContract,
+    RenderedGrokDocument,
     create_grok_document,
     parse_grok_document,
 )
@@ -41,9 +34,7 @@ def grok_config_path() -> str:
 def read_grok_document() -> GrokDocument:
     config_path = grok_config_path()
     hooks_directory = os.path.dirname(config_path)
-    physical_directory_exists(
-        os.path.dirname(hooks_directory), "Grok home directory"
-    )
+    physical_directory_exists(os.path.dirname(hooks_directory), "Grok home directory")
     physical_directory_exists(hooks_directory, "Grok hooks directory")
     snapshot = read_physical_file(config_path, "Grok user hooks")
     if snapshot is None:
@@ -51,168 +42,16 @@ def read_grok_document() -> GrokDocument:
     return parse_grok_document(config_path, snapshot.contents)
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"),
-            validate=True,
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject, expected_agent_id: str, config_path: str
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not same_grok_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime identity does not match Grok hooks: {config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
+def rendered_change(rendered: RenderedGrokDocument) -> Optional[FileChange]:
+    if not rendered.changed:
         return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
+    return rendered_source_change(
+        rendered.document.config_path,
+        "Grok user hooks",
+        rendered.document.raw,
+        rendered.next_source,
     )
 
 
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = runtime_root()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        ("guard.py", "Elydora guard runtime"),
-        ("hook.py", "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_states = [
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    ]
-    artifact_exists = any(artifact_states)
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_grok_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime config identity does not match Grok agent {agent_id}: "
-            f"{config_path}"
-        )
-
-
-def _runtime_contract_exists(contract: GrokRuntimeContract) -> bool:
-    root = runtime_root()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if (
-        not same_grok_path(os.path.dirname(agent_directory), root)
-        or not same_grok_path(
-            contract.audit_path, os.path.join(agent_directory, "hook.py")
-        )
-    ):
-        return False
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    return bool(guard.contents) and bool(audit.contents)
-
-
 def grok_runtime_files_exist(contracts: List[GrokRuntimeContract]) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)
+    return any(runtime_contract_exists(contract, AGENT_KEY, "Grok") for contract in contracts)

elydora/plugins/kimi_command.py

@@ -2,16 +2,23 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
-import ntpath
 import os
 import re
 import shlex
-import subprocess  # nosec B404 - used only for legacy command rendering
+import subprocess
 import sys
 from typing import Optional, Tuple
 
+from ._runtime import managed_script_reference
+from ._shell_command import (
+    encoded_windows_command,
+    is_python_executable,
+    parse_encoded_windows_command,
+    parse_posix_command,
+    posix_source,
+)
+
 
 @dataclass(frozen=True)
 class KimiRuntimeReference:
@@ -19,154 +26,14 @@ class KimiRuntimeReference:
     script_path: str
 
 
-@dataclass(frozen=True)
-class _ParsedArgument:
-    value: str
-    next_index: int
-
-
-def runtime_root() -> str:
-    return os.path.join(os.path.expanduser("~"), ".elydora")
-
-
-def same_kimi_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_kimi_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
-def _windows_powershell_path() -> str:
-    configured = os.environ.get("SystemRoot") if os.name == "nt" else None
-    system_root = (
-        configured
-        if configured
-        and ntpath.isabs(configured)
-        and re.search(r'["%\r\n]', configured) is None
-        else r"C:\Windows"
-    )
-    return ntpath.join(
-        system_root,
-        "System32",
-        "WindowsPowerShell",
-        "v1.0",
-        "powershell.exe",
-    )
-
-
-def _windows_command(script_path: str) -> str:
-    source = (
-        f"& {_quote_powershell(sys.executable)} "
-        f"{_quote_powershell(script_path)}; exit $LASTEXITCODE"
-    )
-    encoded = base64.b64encode(source.encode("utf-16le")).decode("ascii")
-    return (
-        f'"{_windows_powershell_path()}" -NoLogo -NoProfile '
-        f"-NonInteractive -EncodedCommand {encoded}"
-    )
-
-
 def build_kimi_command(script_path: str) -> str:
     if not os.path.isabs(sys.executable) or not os.path.isabs(script_path):
         raise ValueError(
             "Kimi hook commands require absolute executable and script paths"
         )
     if os.name == "nt":
-        return _windows_command(script_path)
-    return f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return _ParsedArgument(value, index + 1)
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_posix_command(command: str) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, 0)
-    if executable is None or command[executable.next_index : executable.next_index + 1] != " ":
-        return None
-    script = _read_posix_argument(command, executable.next_index + 1)
-    if script is None or script.next_index != len(command):
-        return None
-    return executable.value, script.value
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return _ParsedArgument(value, index + 1)
-    return None
-
-
-def _parse_powershell_source(source: str) -> Optional[Tuple[str, str]]:
-    if not source.startswith("& "):
-        return None
-    executable = _read_powershell_argument(source, 2)
-    if executable is None or source[executable.next_index : executable.next_index + 1] != " ":
-        return None
-    script = _read_powershell_argument(source, executable.next_index + 1)
-    if script is None or source[script.next_index :] != "; exit $LASTEXITCODE":
-        return None
-    return executable.value, script.value
-
-
-def _parse_windows_command(command: str) -> Optional[Tuple[str, str]]:
-    match = re.fullmatch(
-        r'"([^"\r\n]+)" -NoLogo -NoProfile -NonInteractive '
-        r"-EncodedCommand ([A-Za-z0-9+/]+={0,2})",
-        command,
-    )
-    if (
-        match is None
-        or not ntpath.isabs(match.group(1))
-        or ntpath.basename(match.group(1)).lower() != "powershell.exe"
-    ):
-        return None
-    try:
-        raw = base64.b64decode(match.group(2), validate=True)
-        if base64.b64encode(raw).decode("ascii") != match.group(2):
-            return None
-        source = raw.decode("utf-16le")
-    except (UnicodeDecodeError, ValueError):
-        return None
-    return _parse_powershell_source(source)
+        return encoded_windows_command(script_path)
+    return posix_source(script_path)
 
 
 def _parse_legacy_posix_command(command: str) -> Optional[Tuple[str, str]]:
@@ -193,40 +60,19 @@ def _parse_legacy_windows_command(command: str) -> Optional[Tuple[str, str]]:
     return arguments[0], arguments[1]
 
 
-def _is_python_executable(file_path: str) -> bool:
-    return (
-        re.fullmatch(
-            r"python(?:[0-9]+(?:\.[0-9]+)*)?(?:\.exe)?",
-            os.path.basename(file_path),
-            re.IGNORECASE,
-        )
-        is not None
-    )
-
-
 def kimi_runtime_reference(
     command: str, script_name: str
 ) -> Optional[KimiRuntimeReference]:
     parsed = (
-        _parse_posix_command(command)
-        or _parse_windows_command(command)
+        parse_posix_command(command)
+        or parse_encoded_windows_command(command)
         or _parse_legacy_posix_command(command)
         or _parse_legacy_windows_command(command)
     )
     if parsed is None:
         return None
     executable, script_path = parsed
-    if (
-        not os.path.isabs(executable)
-        or not os.path.isabs(script_path)
-        or not _is_python_executable(executable)
-        or os.path.basename(script_path) != script_name
-    ):
+    if not os.path.isabs(executable) or not is_python_executable(executable):
         return None
-    agent_directory = os.path.dirname(script_path)
-    if not same_kimi_path(os.path.dirname(agent_directory), runtime_root()):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    if agent_id in {"", ".", ".."}:
-        return None
-    return KimiRuntimeReference(agent_id, script_path)
+    reference = managed_script_reference(script_path, script_name)
+    return None if reference is None else KimiRuntimeReference(*reference)

elydora/plugins/kimi_contract.py

@@ -10,12 +10,11 @@ from typing import Any, Dict, FrozenSet, List, Optional, Tuple
 from tomlkit import aot, document, dumps, inline_table, parse, table
 from tomlkit.items import AoT, Array
 
+from ._runtime import same_agent_id, same_path
 from .kimi_command import (
     KimiRuntimeReference,
     build_kimi_command,
     kimi_runtime_reference,
-    same_kimi_agent_id,
-    same_kimi_path,
 )
 
 
@@ -216,7 +215,7 @@ def remove_managed_kimi_hooks(
             else None
         )
         remove = reference is not None and (
-            not agent_id or same_kimi_agent_id(reference.agent_id, agent_id)
+            not agent_id or same_agent_id(reference.agent_id, agent_id)
         )
         if not remove:
             result.append(hook)
@@ -318,7 +317,7 @@ def kimi_runtime_contracts(
             failure = failures.get(key, [])
             if len(guard) != 1 or len(success) != 1 or len(failure) != 1:
                 continue
-            if not same_kimi_path(success[0].script_path, failure[0].script_path):
+            if not same_path(success[0].script_path, failure[0].script_path):
                 continue
             contracts.append(
                 KimiRuntimeContract(

elydora/plugins/kimi_installation.py

@@ -2,121 +2,39 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-import json
-import os
 from typing import List, Optional
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import FileChange, file_change, source_change, write_changes
+from ._managed_files import MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    validate_install_config,
+    validate_runtime_tree,
+)
+from ._transaction import FileChange, source_change, write_changes
 from .base import InstallConfig
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
-from .kimi_command import runtime_root, same_kimi_path
-from .kimi_contract import (
-    AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
-    KimiDocument,
-    RenderedKimiDocument,
-)
-from .kimi_io import (
-    validate_api_origin,
-    validate_private_key,
-    validate_runtime_tree,
-)
+from .kimi_contract import AGENT_KEY, KimiDocument, RenderedKimiDocument
 
-
-@dataclass(frozen=True)
-class KimiRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> KimiRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(runtime_root(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    configured_guard = config.get("guard_script_path", "")
-    if not same_kimi_path(configured_guard, guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return KimiRuntimePaths(agent_id, agent_directory, guard_path, audit_path)
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(f"Kimi installation requires agent_name {AGENT_KEY}")
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
+PRODUCT = "Kimi"
 
 
 def preflight_kimi_installation(
     config: InstallConfig, documents: List[KimiDocument]
-) -> KimiRuntimePaths:
+) -> RuntimePaths:
     if not documents:
         raise ValueError("Kimi installation requires at least one hook contract")
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(
-        file_path,
-        label,
-        next_source,
-        mode,
-        maximum_bytes,
-    )
-
-
-def rendered_change(
-    rendered: RenderedKimiDocument,
-) -> Optional[FileChange]:
+def rendered_change(rendered: RenderedKimiDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
     source = rendered.document
@@ -130,66 +48,32 @@ def rendered_change(
     )
 
 
-def _present(changes: List[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_kimi_installation(
     config: InstallConfig,
-    paths: KimiRuntimePaths,
+    paths: RuntimePaths,
     rendered: List[RenderedKimiDocument],
 ) -> List[FileChange]:
-    config_changes = _present([rendered_change(item) for item in rendered])
     guard_script = generate_guard_script(AGENT_KEY, paths.agent_id)
     audit_script = generate_hook_script(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    runtime_changes = _present(
-        [
-            _runtime_change(
-                paths.guard_path,
-                "Elydora guard runtime",
-                guard_script,
-                0o700,
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "config.json"),
-                "Elydora runtime config",
-                _json_source(_runtime_config(config, paths.agent_id)),
-                0o600,
-                MAX_CONFIG_BYTES,
-            ),
-            _runtime_change(
-                os.path.join(paths.agent_directory, "private.key"),
-                "Elydora private key",
-                config.get("private_key", ""),
-                0o600,
-                MAX_SECRET_BYTES,
-            ),
-            _runtime_change(
-                paths.audit_path,
-                "Elydora audit runtime",
-                audit_script,
-                0o700,
-            ),
-        ]
-    )
-    return [*runtime_changes, *config_changes]
+    return [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([rendered_change(item) for item in rendered]),
+    ]
 
 
 def commit_kimi_installation(changes: List[FileChange]) -> None:
     write_changes(changes, "Install Kimi hooks")
 
 
-def prepare_kimi_uninstall(
-    rendered: List[RenderedKimiDocument],
-) -> List[FileChange]:
-    return _present([rendered_change(item) for item in rendered])
+def prepare_kimi_uninstall(rendered: List[RenderedKimiDocument]) -> List[FileChange]:
+    return present([rendered_change(item) for item in rendered])
 
 
 def commit_kimi_uninstall(changes: List[FileChange]) -> None:

elydora/plugins/kimi_io.py

@@ -2,24 +2,11 @@
 
 from __future__ import annotations
 
-import base64
 import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
-from .kimi_command import (
-    runtime_root,
-    same_kimi_agent_id,
-    same_kimi_path,
-)
+from ._managed_files import physical_directory_exists, read_physical_file
+from ._runtime import runtime_contract_exists, same_path
 from .kimi_contract import (
     AGENT_KEY,
     LEGACY_EVENTS,
@@ -76,7 +63,7 @@ def resolve_kimi_contracts() -> List[KimiContract]:
     legacy_home = os.path.join(home, ".kimi")
     stable = _stable_contract(os.path.join(stable_home, "config.toml"))
     legacy = _legacy_contract(os.path.join(legacy_home, "config.toml"))
-    if same_kimi_path(stable.config_path, legacy.config_path):
+    if same_path(stable.config_path, legacy.config_path):
         return [stable]
 
     stable_detected = explicit_home is not None or _entry_exists(
@@ -101,176 +88,5 @@ def read_kimi_documents() -> List[KimiDocument]:
     return [_read_kimi_document(contract) for contract in resolve_kimi_contracts()]
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"),
-            validate=True,
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(
-    value: Any, field: str, config_path: str
-) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject,
-    expected_agent_id: str,
-    config_path: str,
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not same_kimi_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime identity does not match Kimi hooks: {config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path,
-        "Elydora runtime config",
-        MAX_CONFIG_BYTES,
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents,
-        f"Elydora runtime config at {file_path}",
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = runtime_root()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = [
-        ("private.key", "Elydora private key"),
-        ("guard.py", "Elydora guard runtime"),
-        ("hook.py", "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    ]
-    artifact_states = [
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    ]
-    artifact_exists = any(artifact_states)
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_kimi_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            f"Elydora runtime config identity does not match Kimi agent {agent_id}: "
-            f"{config_path}"
-        )
-
-
-def _runtime_contract_exists(contract: KimiRuntimeContract) -> bool:
-    root = runtime_root()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if (
-        not same_kimi_path(os.path.dirname(agent_directory), root)
-        or not same_kimi_path(
-            contract.audit_path, os.path.join(agent_directory, "hook.py")
-        )
-    ):
-        return False
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    return bool(guard.contents) and bool(audit.contents)
-
-
 def kimi_runtime_files_exist(contracts: List[KimiRuntimeContract]) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)
+    return any(runtime_contract_exists(contract, AGENT_KEY, "Kimi") for contract in contracts)

elydora/plugins/kirocli.py

@@ -2,15 +2,13 @@
 
 from __future__ import annotations
 
-import json
 import os
 import shlex
-import stat
 import subprocess
 import sys
-import tempfile
 from typing import Any, Dict, List, Optional, Tuple
 
+from ._file_io import read_json, regular_file_exists, remove_file, write_json_atomic, write_text_atomic
 from .base import AgentPlugin, InstallConfig, PluginStatus
 from .hook_template import generate_hook_script
 
@@ -42,11 +40,11 @@ class KiroCliPlugin(AgentPlugin):
             raise ValueError("agent_id is required")
         if not guard_path:
             raise ValueError("guard_script_path is required")
-        if not _regular_file_exists(guard_path, "Elydora guard runtime"):
+        if not regular_file_exists(guard_path, "Elydora guard runtime"):
             raise FileNotFoundError(f"Elydora guard runtime is missing: {guard_path}")
 
-        v2_settings = _read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config") or {}
-        v3_settings = _read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config") or {}
+        v2_settings = read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config") or {}
+        v3_settings = read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config") or {}
         v2_hooks = _hooks_object(v2_settings, "Kiro CLI v2 agent config")
         current_v3_hooks = _v3_hooks(v3_settings)
 
@@ -108,22 +106,28 @@ class KiroCliPlugin(AgentPlugin):
             kid=config.get("kid", ""),
             base_url=config.get("base_url", "https://api.elydora.com"),
         )
-        _write_json_atomic(os.path.join(agent_dir, "config.json"), runtime_config, 0o600)
-        _write_text_atomic(
+        write_json_atomic(
+            os.path.join(agent_dir, "config.json"),
+            runtime_config,
+            0o600,
+            "Elydora runtime config",
+        )
+        write_text_atomic(
             os.path.join(agent_dir, "private.key"),
             config.get("private_key", ""),
             0o600,
+            "Elydora private key",
         )
-        _write_text_atomic(hook_path, hook_script, 0o700)
-        _write_json_atomic(V2_AGENT_PATH, next_v2_settings, 0o600)
-        _write_json_atomic(V3_HOOKS_PATH, next_v3_settings, 0o600)
+        write_text_atomic(hook_path, hook_script, 0o700, "Elydora audit runtime")
+        write_json_atomic(V2_AGENT_PATH, next_v2_settings, 0o600, "Kiro CLI v2 agent config")
+        write_json_atomic(V3_HOOKS_PATH, next_v3_settings, 0o600, "Kiro CLI v3 hooks config")
 
         print('Kiro CLI v2: start with "kiro-cli --agent elydora-audit".')
         print('Kiro CLI v3: start with "kiro-cli --v3"; global hooks load automatically.')
 
     def uninstall(self, agent_id: str = "") -> None:
-        v2_settings = _read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config")
-        v3_settings = _read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
+        v2_settings = read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config")
+        v3_settings = read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
 
         next_v2: Optional[Tuple[JsonObject, bool]] = None
         if v2_settings is not None:
@@ -153,22 +157,22 @@ class KiroCliPlugin(AgentPlugin):
         if next_v2 is not None:
             settings, remove = next_v2
             if remove:
-                _remove_file(V2_AGENT_PATH, "Kiro CLI v2 agent config")
+                remove_file(V2_AGENT_PATH, "Kiro CLI v2 agent config")
             else:
-                _write_json_atomic(V2_AGENT_PATH, settings, 0o600)
+                write_json_atomic(V2_AGENT_PATH, settings, 0o600, "Kiro CLI v2 agent config")
 
         if next_v3 is not None:
             settings, remove = next_v3
             if remove:
-                _remove_file(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
+                remove_file(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
             else:
-                _write_json_atomic(V3_HOOKS_PATH, settings, 0o600)
+                write_json_atomic(V3_HOOKS_PATH, settings, 0o600, "Kiro CLI v3 hooks config")
 
         print("Elydora hooks uninstalled from Kiro CLI.")
 
     def status(self) -> PluginStatus:
-        v2_settings = _read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config")
-        v3_settings = _read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
+        v2_settings = read_json(V2_AGENT_PATH, "Kiro CLI v2 agent config")
+        v3_settings = read_json(V3_HOOKS_PATH, "Kiro CLI v3 hooks config")
         contracts: List[HookContract] = []
 
         if v2_settings is not None:
@@ -204,63 +208,6 @@ class KiroCliPlugin(AgentPlugin):
         return PluginStatus(installed=installed, agent=AGENT_KEY, details=details)
 
 
-def _read_json(path: str, label: str) -> Optional[JsonObject]:
-    try:
-        with open(path, "r", encoding="utf-8") as file:
-            raw = file.read()
-    except FileNotFoundError:
-        return None
-    except OSError as error:
-        raise OSError(f"Read {label} at {path}: {error}") from error
-
-    try:
-        value = json.loads(raw)
-    except json.JSONDecodeError as error:
-        raise ValueError(f"Failed to parse {label} at {path}: {error}") from error
-    if not isinstance(value, dict):
-        raise ValueError(f"{label} at {path} must contain a JSON object")
-    return value
-
-
-def _write_text_atomic(path: str, content: str, mode: int) -> None:
-    directory = os.path.dirname(path) or "."
-    os.makedirs(directory, exist_ok=True)
-    descriptor, temporary_path = tempfile.mkstemp(
-        dir=directory,
-        prefix=f".{os.path.basename(path)}.",
-        suffix=".tmp",
-        text=True,
-    )
-    try:
-        with os.fdopen(descriptor, "w", encoding="utf-8", newline="\n") as file:
-            file.write(content)
-        os.chmod(temporary_path, mode)
-        os.replace(temporary_path, path)
-    except BaseException as write_error:
-        try:
-            os.remove(temporary_path)
-        except FileNotFoundError:
-            pass
-        except OSError as cleanup_error:
-            raise RuntimeError(
-                f"Write {path} failed and temporary file cleanup also failed: {cleanup_error}"
-            ) from write_error
-        raise
-
-
-def _write_json_atomic(path: str, value: JsonObject, mode: int) -> None:
-    _write_text_atomic(path, json.dumps(value, indent=2) + "\n", mode)
-
-
-def _remove_file(path: str, label: str) -> None:
-    try:
-        os.remove(path)
-    except FileNotFoundError:
-        return
-    except OSError as error:
-        raise OSError(f"Remove {label} at {path}: {error}") from error
-
-
 def _build_command(script_path: str) -> str:
     arguments = [sys.executable, script_path]
     return subprocess.list2cmdline(arguments) if os.name == "nt" else shlex.join(arguments)
@@ -385,16 +332,6 @@ def _find_v3_command(
     return None
 
 
-def _regular_file_exists(path: str, label: str) -> bool:
-    try:
-        metadata = os.stat(path)
-    except FileNotFoundError:
-        return False
-    except OSError as error:
-        raise OSError(f"Read {label} at {path}: {error}") from error
-    return stat.S_ISREG(metadata.st_mode)
-
-
 def _runtime_scripts_exist(contracts: List[HookContract]) -> bool:
     try:
         with os.scandir(ELYDORA_DIR) as iterator:
@@ -421,10 +358,10 @@ def _runtime_scripts_exist(contracts: List[HookContract]) -> bool:
             continue
 
         config_path = os.path.join(entry.path, "config.json")
-        config = _read_json(config_path, "Elydora runtime config")
+        config = read_json(config_path, "Elydora runtime config")
         if config is None or config.get("agent_name") != AGENT_KEY:
             continue
-        return _regular_file_exists(
+        return regular_file_exists(
             guard_path, "Elydora guard runtime"
-        ) and _regular_file_exists(hook_path, "Elydora audit runtime")
+        ) and regular_file_exists(hook_path, "Elydora audit runtime")
     return False

elydora/plugins/kiroide.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+from ._runtime import same_agent_id
 from .base import AgentPlugin, InstallConfig, PluginStatus
 from .kiroide_contract import (
     AGENT_KEY,
@@ -21,7 +22,6 @@ from .kiroide_installation import (
     prepare_kiroide_installation,
     prepare_kiroide_uninstall,
 )
-from .kiroide_command import same_kiroide_agent_id
 from .kiroide_io import (
     kiroide_runtime_files_exist,
     legacy_kiroide_contract_matches_agent,
@@ -78,13 +78,13 @@ class KiroIdePlugin(AgentPlugin):
         agent_ids: list[str] = []
         for discovered_agent_id in discovered_agent_ids:
             if not any(
-                same_kiroide_agent_id(discovered_agent_id, existing_agent_id)
+                same_agent_id(discovered_agent_id, existing_agent_id)
                 for existing_agent_id in agent_ids
             ):
                 agent_ids.append(discovered_agent_id)
         for managed_agent_id in agent_ids:
             owns_workspace_runtime = any(
-                same_kiroide_agent_id(contract.agent_id, managed_agent_id)
+                same_agent_id(contract.agent_id, managed_agent_id)
                 for contract in contracts
             )
             require_kiroide_workspace_owner(

elydora/plugins/kiroide_command.py

@@ -2,15 +2,23 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
-import ntpath
 import os
 import re
 import sys
 from typing import Optional, Tuple
 
-from elydora._runtime_paths import runtime_root
+from ._runtime import managed_script_reference, same_path
+from ._shell_command import (
+    encoded_windows_command,
+    is_python_executable,
+    parse_encoded_windows_command,
+    parse_posix_command,
+    posix_source,
+    windows_powershell_path,
+)
+
+_PREAMBLE = "$ErrorActionPreference = 'Stop'; $global:LASTEXITCODE = 1; "
 
 
 @dataclass(frozen=True)
@@ -19,71 +27,10 @@ class KiroIdeRuntimeReference:
     script_path: str
 
 
-@dataclass(frozen=True)
-class _ParsedArgument:
-    value: str
-    next_index: int
-
-
-def same_kiroide_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_kiroide_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
-def _windows_powershell_path() -> str:
-    configured = os.environ.get("SystemRoot") if os.name == "nt" else None
-    system_root = (
-        configured
-        if configured
-        and ntpath.isabs(configured)
-        and re.search(r'["%\r\n]', configured) is None
-        else r"C:\Windows"
-    )
-    return ntpath.join(
-        system_root,
-        "System32",
-        "WindowsPowerShell",
-        "v1.0",
-        "powershell.exe",
-    )
-
-
-def _same_windows_path(left: str, right: str) -> bool:
-    return ntpath.normcase(ntpath.abspath(left)) == ntpath.normcase(
-        ntpath.abspath(right)
-    )
-
-
-def _windows_command(script_path: str) -> str:
-    source = (
-        "$ErrorActionPreference = 'Stop'; $global:LASTEXITCODE = 1; "
-        f"& {_quote_powershell(sys.executable)} "
-        f"{_quote_powershell(script_path)}; exit $LASTEXITCODE"
-    )
-    encoded = base64.b64encode(source.encode("utf-16le")).decode("ascii")
-    return (
-        f'"{_windows_powershell_path()}" -NoLogo -NoProfile '
-        f"-NonInteractive -EncodedCommand {encoded}"
-    )
-
-
 def build_kiroide_command(script_path: str) -> str:
     if (
         not os.path.isabs(sys.executable)
-        or not _is_python_executable(sys.executable)
+        or not is_python_executable(sys.executable)
         or not os.path.isabs(script_path)
     ):
         raise ValueError(
@@ -91,136 +38,25 @@ def build_kiroide_command(script_path: str) -> str:
             "and script path"
         )
     if os.name == "nt":
-        return _windows_command(script_path)
-    return f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return _ParsedArgument(value, index + 1)
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_posix_command(command: str) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, 0)
-    if (
-        executable is None
-        or command[executable.next_index : executable.next_index + 1] != " "
-    ):
-        return None
-    script = _read_posix_argument(command, executable.next_index + 1)
-    if script is None or script.next_index != len(command):
-        return None
-    return executable.value, script.value
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[_ParsedArgument]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return _ParsedArgument(value, index + 1)
-    return None
-
-
-def _parse_powershell_source(source: str) -> Optional[Tuple[str, str]]:
-    prefix = "$ErrorActionPreference = 'Stop'; $global:LASTEXITCODE = 1; & "
-    if not source.startswith(prefix):
-        return None
-    executable = _read_powershell_argument(source, len(prefix))
-    if (
-        executable is None
-        or source[executable.next_index : executable.next_index + 1] != " "
-    ):
-        return None
-    script = _read_powershell_argument(source, executable.next_index + 1)
-    if script is None or source[script.next_index :] != "; exit $LASTEXITCODE":
-        return None
-    return executable.value, script.value
-
-
-def _parse_windows_command(command: str) -> Optional[Tuple[str, str]]:
-    match = re.fullmatch(
-        r'"([^"\r\n]+)" -NoLogo -NoProfile -NonInteractive '
-        r"-EncodedCommand ([A-Za-z0-9+/]+={0,2})",
-        command,
-    )
-    if (
-        match is None
-        or not ntpath.isabs(match.group(1))
-        or not _same_windows_path(match.group(1), _windows_powershell_path())
-    ):
-        return None
-    try:
-        raw = base64.b64decode(match.group(2), validate=True)
-        if base64.b64encode(raw).decode("ascii") != match.group(2):
-            return None
-        source = raw.decode("utf-16le")
-    except (UnicodeDecodeError, ValueError):
-        return None
-    return _parse_powershell_source(source)
-
-
-def _is_python_executable(file_path: str) -> bool:
-    return (
-        re.fullmatch(
-            r"(?:python(?:[0-9]+(?:\.[0-9]+)*)?[td]?|"
-            r"pypy(?:[0-9]+(?:\.[0-9]+)*)?)(?:\.exe)?",
-            os.path.basename(file_path),
-            re.IGNORECASE,
-        )
-        is not None
-    )
+        return encoded_windows_command(script_path, _PREAMBLE)
+    return posix_source(script_path)
 
 
 def _runtime_reference(
     executable: str, script_path: str, script_name: str
 ) -> Optional[KiroIdeRuntimeReference]:
-    if (
-        not os.path.isabs(executable)
-        or not _is_python_executable(executable)
-        or not os.path.isabs(script_path)
-        or os.path.basename(script_path) != script_name
-    ):
+    if not os.path.isabs(executable) or not is_python_executable(executable):
         return None
-    agent_directory = os.path.dirname(script_path)
-    if not same_kiroide_path(os.path.dirname(agent_directory), runtime_root()):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    if agent_id in {"", ".", ".."}:
-        return None
-    return KiroIdeRuntimeReference(agent_id, script_path)
+    reference = managed_script_reference(script_path, script_name)
+    return None if reference is None else KiroIdeRuntimeReference(*reference)
 
 
 def _parse_kiroide_command(command: str) -> Optional[Tuple[str, str]]:
-    return (
-        _parse_windows_command(command)
-        if os.name == "nt"
-        else _parse_posix_command(command)
-    )
+    if os.name == "nt":
+        return parse_encoded_windows_command(
+            command, _PREAMBLE + "& ", windows_powershell_path()
+        )
+    return parse_posix_command(command)
 
 
 def owned_kiroide_runtime_reference(
@@ -236,9 +72,7 @@ def kiroide_runtime_reference(
     command: str, script_name: str
 ) -> Optional[KiroIdeRuntimeReference]:
     parsed = _parse_kiroide_command(command)
-    if parsed is None:
-        return None
-    if not same_kiroide_path(parsed[0], sys.executable):
+    if parsed is None or not same_path(parsed[0], sys.executable):
         return None
     return _runtime_reference(parsed[0], parsed[1], script_name)
 

elydora/plugins/kiroide_contract.py

@@ -8,6 +8,7 @@ import os
 from typing import Any, Callable, Dict, List, Optional, Tuple
 
 from ._managed_files import FileSnapshot
+from ._runtime import same_agent_id, same_path
 from ._strict_json import JsonObject, parse_json_object
 from .kiroide_command import (
     KiroIdeRuntimeReference,
@@ -16,8 +17,6 @@ from .kiroide_command import (
     legacy_audit_reference,
     legacy_guard_reference,
     owned_kiroide_runtime_reference,
-    same_kiroide_agent_id,
-    same_kiroide_path,
 )
 
 
@@ -240,7 +239,7 @@ def _managed_pair(
     if (
         guard is None
         or audit is None
-        or not same_kiroide_agent_id(guard.agent_id, audit.agent_id)
+        or not same_agent_id(guard.agent_id, audit.agent_id)
     ):
         return None
     return (guards[0][0], guard), (audits[0][0], audit)
@@ -289,7 +288,7 @@ def without_managed_kiroide_hooks(
     for index, hook in enumerate(hooks):
         reference = owned.get(index)
         remove = reference is not None and (
-            not agent_id or same_kiroide_agent_id(reference.agent_id, agent_id)
+            not agent_id or same_agent_id(reference.agent_id, agent_id)
         )
         if not remove:
             result.append(hook)
@@ -382,8 +381,8 @@ def legacy_kiroide_runtime_contract(
     if (
         guard is None
         or audit is None
-        or not same_kiroide_agent_id(guard.agent_id, audit.agent_id)
-        or not same_kiroide_path(
+        or not same_agent_id(guard.agent_id, audit.agent_id)
+        or not same_path(
             os.path.dirname(guard.script_path), os.path.dirname(audit.script_path)
         )
     ):

elydora/plugins/kiroide_installation.py

@@ -3,12 +3,9 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-import json
 import os
 from typing import List, Optional, Sequence, Tuple
 
-from elydora._runtime_paths import resolve_agent_directory, runtime_root
-
 from ._managed_files import (
     MAX_CONFIG_BYTES,
     MAX_SECRET_BYTES,
@@ -16,6 +13,14 @@ from ._managed_files import (
     read_physical_file,
 )
 from ._opaque_removal import OpaqueRemovalChange
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    present,
+    resolve_runtime_paths,
+    runtime_config_source,
+    same_agent_id,
+    validate_install_config,
+)
 from ._transaction import (
     DirectoryPrecondition,
     FileChange,
@@ -34,11 +39,8 @@ from ._runtime_removal import (
 from .base import InstallConfig
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
-from .kiroide_command import same_kiroide_agent_id, same_kiroide_path
 from .kiroide_contract import (
     AGENT_KEY,
-    AUDIT_SCRIPT,
-    GUARD_SCRIPT,
     RenderedKiroIdeDocument,
     kiroide_runtime_contracts,
 )
@@ -54,11 +56,13 @@ from .kiroide_io import (
     LegacyKiroIdeDocument,
     legacy_kiroide_contract_matches_agent,
     require_physical_legacy_directory,
-    validate_api_origin,
     validate_kiroide_runtime_config,
-    validate_private_key,
     validate_runtime_tree,
 )
+
+PRODUCT = "Kiro IDE"
+
+
 @dataclass(frozen=True)
 class KiroIdeRuntimePaths:
     agent_id: str
@@ -74,6 +78,8 @@ class KiroIdeRuntimePaths:
 class PreparedKiroIdeInstallation:
     changes: List[FileChange]
     runtime_preconditions: List[FilePrecondition]
+
+
 @dataclass(frozen=True)
 class PreparedKiroIdeUninstall:
     changes: List[FileChange]
@@ -92,79 +98,30 @@ def _require_runtime_state(
     )
 
 
-def _runtime_config(
-    config: InstallConfig, agent_id: str, workspace_root: str
-) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-        "workspace_root": workspace_root,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
 def _agent_paths(config: InstallConfig) -> KiroIdeRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    root = runtime_root()
+    paths = resolve_runtime_paths(config)
+    root = os.path.dirname(paths.agent_directory)
     runtime_parent = os.path.dirname(root)
-    agent_directory = resolve_agent_directory(root, agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_kiroide_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    directories = inspect_runtime_directories(
-        runtime_parent, root, agent_directory
-    )
     return KiroIdeRuntimePaths(
-        agent_id,
+        paths.agent_id,
         runtime_parent,
         root,
-        agent_directory,
-        guard_path,
-        audit_path,
-        directories,
+        paths.agent_directory,
+        paths.guard_path,
+        paths.audit_path,
+        inspect_runtime_directories(runtime_parent, root, paths.agent_directory),
     )
 
 
-def _validate_install_config(config: InstallConfig) -> KiroIdeRuntimePaths:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(f"Kiro IDE installation requires agent_name {AGENT_KEY}")
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    return _agent_paths(config)
-
-
 def preflight_kiroide_installation(
     config: InstallConfig, sources: KiroIdeSources
 ) -> KiroIdeRuntimePaths:
     if not sources.document.file_path:
         raise ValueError("Kiro IDE installation requires a workspace hook path")
-    paths = _validate_install_config(config)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    paths = _agent_paths(config)
     owns_workspace_runtime = any(
-        same_kiroide_agent_id(contract.agent_id, paths.agent_id)
+        same_agent_id(contract.agent_id, paths.agent_id)
         for contract in kiroide_runtime_contracts(sources.document.hooks)
     )
     owns_global_legacy_runtime = legacy_kiroide_contract_matches_agent(
@@ -229,7 +186,7 @@ def _removes_legacy(
 ) -> bool:
     return legacy.contract is not None and (
         not agent_id
-        or same_kiroide_agent_id(legacy.contract.agent_id, agent_id)
+        or same_agent_id(legacy.contract.agent_id, agent_id)
     )
 
 
@@ -252,10 +209,6 @@ def _legacy_change(
     )
 
 
-def _present(changes: Sequence[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_kiroide_installation(
     config: InstallConfig,
     paths: KiroIdeRuntimePaths,
@@ -269,7 +222,7 @@ def prepare_kiroide_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
@@ -280,12 +233,11 @@ def prepare_kiroide_installation(
         _runtime_change(
             os.path.join(paths.agent_directory, "config.json"),
             "Elydora runtime config",
-            _json_source(
-                _runtime_config(
-                    config,
-                    paths.agent_id,
-                    sources.paths.workspace_root,
-                )
+            runtime_config_source(
+                config,
+                paths.agent_id,
+                AGENT_KEY,
+                workspace_root=sources.paths.workspace_root,
             ),
             0o600,
             MAX_CONFIG_BYTES,
@@ -303,7 +255,7 @@ def prepare_kiroide_installation(
             paths.audit_path, "Elydora audit runtime", audit_script, 0o700
         ),
     ]
-    changes = _present(
+    changes = present(
         [
             *(change for change, _condition in runtime),
             _rendered_change(rendered),
@@ -420,7 +372,7 @@ def prepare_kiroide_uninstall(
     candidates = runtime_agent_ids or ((agent_id,) if agent_id else ())
     for runtime_agent_id in candidates:
         if any(
-            same_kiroide_agent_id(runtime_agent_id, selected_agent_id)
+            same_agent_id(runtime_agent_id, selected_agent_id)
             for selected_agent_id in selected_agent_ids
         ):
             continue
@@ -436,7 +388,7 @@ def prepare_kiroide_uninstall(
                 config_path,
                 sources.paths.workspace_root,
                 allow_missing_workspace_root=any(
-                    same_kiroide_agent_id(
+                    same_agent_id(
                         contract.agent_id, runtime_agent_id
                     )
                     for contract in kiroide_runtime_contracts(
@@ -454,7 +406,7 @@ def prepare_kiroide_uninstall(
         )
         if runtime_removal is not None:
             runtime_removals.append(runtime_removal)
-    provider_changes = _present(
+    provider_changes = present(
         [_rendered_change(rendered), _legacy_change(sources.legacy, agent_id)]
     )
     return PreparedKiroIdeUninstall(

elydora/plugins/kiroide_io.py

@@ -2,11 +2,9 @@
 
 from __future__ import annotations
 
-import base64
 from dataclasses import dataclass
 import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List, Optional
 
 from elydora._runtime_paths import resolve_agent_directory, runtime_root
 
@@ -20,10 +18,17 @@ from ._managed_files import (
     read_physical_directory,
     read_physical_file,
 )
+from ._runtime import (
+    RUNTIME_ARTIFACTS,
+    RUNTIME_CONFIG_FIELDS,
+    expected_runtime_scripts,
+    require_non_empty_string,
+    same_agent_id,
+    same_path,
+    validate_api_origin,
+    validate_private_key,
+)
 from ._strict_json import JsonObject, parse_json_object
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
-from .kiroide_command import same_kiroide_agent_id, same_kiroide_path
 from .kiroide_contract import (
     AGENT_KEY,
     CONFIG_FILE,
@@ -187,67 +192,7 @@ def require_physical_legacy_directory(legacy: LegacyKiroIdeDocument) -> None:
         )
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
-    )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"), validate=True
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(value: Any, field: str, config_path: str) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(f"Elydora runtime config {field} is invalid: {config_path}")
-    return value
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def _validate_runtime_config(
+def validate_kiroide_runtime_config(
     config: JsonObject,
     expected_agent_id: str,
     config_path: str,
@@ -255,27 +200,19 @@ def _validate_runtime_config(
     allow_missing_workspace_root: bool = False,
     allow_legacy_ownerless_config: bool = False,
 ) -> None:
-    supported = {
-        "org_id",
-        "agent_id",
-        "kid",
-        "base_url",
-        "token",
-        "agent_name",
-        "workspace_root",
-    }
+    supported = RUNTIME_CONFIG_FIELDS | {"workspace_root"}
     extra = next((key for key in config if key not in supported), None)
     if extra is not None:
         raise ValueError(
             f'Elydora runtime config has unsupported field "{extra}": {config_path}'
         )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
+    require_non_empty_string(config.get("org_id"), "org_id", config_path)
+    require_non_empty_string(config.get("kid"), "kid", config_path)
+    agent_id = require_non_empty_string(
         config.get("agent_id"), "agent_id", config_path
     )
     if (
-        not same_kiroide_agent_id(agent_id, expected_agent_id)
+        not same_agent_id(agent_id, expected_agent_id)
         or config.get("agent_name") != AGENT_KEY
     ):
         raise ValueError(
@@ -289,8 +226,8 @@ def _validate_runtime_config(
     if "token" in config and not (
         legacy_ownerless_config and config.get("token") == ""
     ):
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
+        require_non_empty_string(config.get("token"), "token", config_path)
+    base_url = require_non_empty_string(
         config.get("base_url"), "base_url", config_path
     )
     validate_api_origin(base_url, "Elydora runtime config base_url")
@@ -298,39 +235,20 @@ def _validate_runtime_config(
         allow_missing_workspace_root or legacy_ownerless_config
     ):
         return
-    workspace_root = _require_non_empty_string(
+    workspace_root = require_non_empty_string(
         configured_workspace, "workspace_root", config_path
     )
     if not os.path.isabs(workspace_root):
         raise ValueError(
             f"Elydora runtime config workspace_root must be absolute: {config_path}"
         )
-    if not same_kiroide_path(workspace_root, expected_workspace_root):
+    if not same_path(workspace_root, expected_workspace_root):
         raise ValueError(
             "Elydora Kiro IDE agent is bound to another workspace: "
             f"{workspace_root}"
         )
 
 
-def validate_kiroide_runtime_config(
-    config: JsonObject,
-    expected_agent_id: str,
-    config_path: str,
-    expected_workspace_root: str,
-    allow_missing_workspace_root: bool = False,
-    allow_legacy_ownerless_config: bool = False,
-) -> None:
-    """Validate a runtime config already read through a pinned directory."""
-    _validate_runtime_config(
-        config,
-        expected_agent_id,
-        config_path,
-        expected_workspace_root,
-        allow_missing_workspace_root,
-        allow_legacy_ownerless_config,
-    )
-
-
 def validate_runtime_tree(
     agent_directory: str,
     agent_id: str,
@@ -346,27 +264,21 @@ def validate_runtime_tree(
     ):
         return
     config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifact_exists = any(
+    config_snapshot = read_physical_file(config_path, "Elydora runtime config", MAX_CONFIG_BYTES)
+    artifact_states = [
         physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in (
-            ("private.key", "Elydora private key"),
-            ("guard.py", "Elydora guard runtime"),
-            ("hook.py", "Elydora audit runtime"),
-            ("chain-state.json", "Elydora chain state"),
-            ("status-cache.json", "Elydora status cache"),
-            ("error.log", "Elydora error log"),
-        )
-    )
-    if config is None:
+        for name, label in RUNTIME_ARTIFACTS
+    ]
+    artifact_exists = any(artifact_states)
+    if config_snapshot is None:
         if artifact_exists:
             raise ValueError(
                 "Elydora runtime identity cannot be verified without config.json: "
                 f"{agent_directory}"
             )
         return
-    _validate_runtime_config(
-        config,
+    validate_kiroide_runtime_config(
+        parse_json_object(config_snapshot.contents, f"Elydora runtime config at {config_path}"),
         agent_id,
         config_path,
         workspace_root,
@@ -381,8 +293,8 @@ def _runtime_contract_exists(
     root = runtime_root()
     agent_directory = os.path.dirname(contract.guard_path)
     if (
-        not same_kiroide_path(os.path.dirname(agent_directory), root)
-        or not same_kiroide_path(
+        not same_path(os.path.dirname(agent_directory), root)
+        or not same_path(
             contract.audit_path, os.path.join(agent_directory, "hook.py")
         )
     ):
@@ -414,7 +326,7 @@ def _runtime_contract_exists(
     audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
     if config is None or key is None or guard is None or audit is None:
         return False
-    _validate_runtime_config(
+    validate_kiroide_runtime_config(
         config,
         contract.agent_id,
         config_path,
@@ -436,15 +348,7 @@ def _runtime_contract_exists(
             f"its owner: {config_path}"
         )
     validate_private_key(key.contents, "Elydora private key")
-    expected_guard = generate_guard_script(AGENT_KEY, contract.agent_id)
-    expected_audit = generate_hook_script(
-        org_id=str(config["org_id"]),
-        agent_id=contract.agent_id,
-        kid=str(config["kid"]),
-        base_url=str(config["base_url"]),
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
+    expected_guard, expected_audit = expected_runtime_scripts(AGENT_KEY, contract.agent_id, config)
     return guard.contents == expected_guard and audit.contents == expected_audit
 
 
@@ -478,15 +382,15 @@ def legacy_kiroide_contract_matches_agent(
     legacy: LegacyKiroIdeDocument, agent_id: str
 ) -> bool:
     contract = legacy.contract
-    if contract is None or not same_kiroide_agent_id(
+    if contract is None or not same_agent_id(
         contract.agent_id, agent_id
     ):
         return False
     agent_directory = resolve_agent_directory(runtime_root(), agent_id)
-    return same_kiroide_path(
+    return same_path(
         contract.guard_path,
         os.path.join(agent_directory, "guard.py"),
-    ) and same_kiroide_path(
+    ) and same_path(
         contract.audit_path,
         os.path.join(agent_directory, "hook.py"),
     )

elydora/plugins/letta.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 from typing import Dict
 
+from ._runtime import RuntimePaths
 from .base import AgentPlugin, InstallConfig, PluginStatus
 from .letta_config import render_letta_document
 from .letta_contract import (
@@ -13,7 +14,6 @@ from .letta_contract import (
     letta_runtime_contracts,
 )
 from .letta_installation import (
-    LettaRuntimePaths,
     commit_letta_installation,
     commit_letta_uninstall,
     preflight_letta_installation,
@@ -24,7 +24,7 @@ from .letta_io import letta_runtime_files_exist
 from .letta_sources import read_letta_sources
 
 
-def _installed_groups(paths: LettaRuntimePaths) -> Dict[str, JsonObject]:
+def _installed_groups(paths: RuntimePaths) -> Dict[str, JsonObject]:
     return {
         "PreToolUse": build_letta_group(paths.guard_path),
         "PostToolUse": build_letta_group(paths.audit_path),

elydora/plugins/letta_command.py

@@ -4,11 +4,17 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 import os
-import re
 import sys
-from typing import Optional, Tuple
+from typing import Optional
 
-from elydora._runtime_paths import runtime_root
+from ._runtime import managed_script_reference
+from ._shell_command import (
+    is_python_executable,
+    parse_posix_command,
+    parse_powershell_source,
+    posix_source,
+    powershell_source,
+)
 
 
 @dataclass(frozen=True)
@@ -18,103 +24,12 @@ class LettaRuntimeReference:
     executable_path: Optional[str] = None
 
 
-def same_letta_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_letta_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
 def build_letta_command(script_path: str) -> str:
     if not os.path.isabs(sys.executable) or not os.path.isabs(script_path):
         raise ValueError(
             "Letta Code hook commands require absolute executable and script paths"
         )
-    invocation = (
-        f"{_quote_powershell(sys.executable)} {_quote_powershell(script_path)}"
-        if os.name == "nt"
-        else f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
-    )
-    return f"& {invocation}; exit $LASTEXITCODE" if os.name == "nt" else invocation
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return value, index + 1
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_posix_command(command: str) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, 0)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_posix_argument(command, executable[1] + 1)
-    if script is None or script[1] != len(command):
-        return None
-    return executable[0], script[0]
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return value, index + 1
-    return None
-
-
-def _parse_powershell_command(command: str) -> Optional[Tuple[str, str]]:
-    if not command.startswith("& "):
-        return None
-    executable = _read_powershell_argument(command, 2)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_powershell_argument(command, executable[1] + 1)
-    if script is None or command[script[1] :] != "; exit $LASTEXITCODE":
-        return None
-    return executable[0], script[0]
-
-
-def _is_python_executable(file_path: str) -> bool:
-    return bool(re.fullmatch(r"python(?:3(?:\.\d+)?)?(?:\.exe)?", os.path.basename(file_path), re.IGNORECASE))
+    return powershell_source(script_path) if os.name == "nt" else posix_source(script_path)
 
 
 def _runtime_reference(
@@ -122,30 +37,21 @@ def _runtime_reference(
     script_name: str,
     executable_path: Optional[str] = None,
 ) -> Optional[LettaRuntimeReference]:
-    if not os.path.isabs(script_path) or os.path.basename(script_path) != script_name:
+    reference = managed_script_reference(script_path, script_name)
+    if reference is None:
         return None
-    agent_directory = os.path.dirname(script_path)
-    if not same_letta_path(os.path.dirname(agent_directory), runtime_root()):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    if agent_id in {"", ".", ".."}:
-        return None
-    return LettaRuntimeReference(agent_id, script_path, executable_path)
+    return LettaRuntimeReference(reference[0], reference[1], executable_path)
 
 
 def letta_runtime_reference(
     command: str, script_name: str
 ) -> Optional[LettaRuntimeReference]:
     parsed = (
-        _parse_powershell_command(command)
+        parse_powershell_source(command)
         if os.name == "nt"
-        else _parse_posix_command(command)
+        else parse_posix_command(command)
     )
-    if (
-        parsed is None
-        or not os.path.isabs(parsed[0])
-        or not _is_python_executable(parsed[0])
-    ):
+    if parsed is None or not os.path.isabs(parsed[0]) or not is_python_executable(parsed[0]):
         return None
     return _runtime_reference(parsed[1], script_name, parsed[0])
 
@@ -160,11 +66,7 @@ def letta_legacy_guard_reference(
         return None
     executable = command[1:closing]
     script_path = command[closing + 2 :]
-    if (
-        not os.path.isabs(executable)
-        or not _is_python_executable(executable)
-        or not script_path
-    ):
+    if not os.path.isabs(executable) or not is_python_executable(executable) or not script_path:
         return None
     return _runtime_reference(script_path, script_name, executable)
 

elydora/plugins/letta_contract.py

@@ -8,16 +8,13 @@ import os
 import sys
 from typing import Any, Dict, List, Optional, Tuple
 
-from elydora._runtime_paths import runtime_root
-
+from ._runtime import same_agent_id, same_path
 from .letta_command import (
     LettaRuntimeReference,
     build_letta_command,
     letta_legacy_audit_reference,
     letta_legacy_guard_reference,
     letta_runtime_reference,
-    same_letta_agent_id,
-    same_letta_path,
 )
 
 
@@ -63,10 +60,6 @@ class ManagedRemoval:
     remove_group: bool
 
 
-def elydora_dir() -> str:
-    return runtime_root()
-
-
 def _validate_timeout(value: JsonObject, label: str) -> None:
     if "timeout" not in value:
         return
@@ -222,7 +215,7 @@ def managed_letta_removals(
                 is not None
                 and (
                     agent_id is None
-                    or same_letta_agent_id(reference.agent_id, agent_id)
+                    or same_agent_id(reference.agent_id, agent_id)
                 )
             )
             if indexes:
@@ -247,7 +240,7 @@ def _references_for_event(
             if (
                 reference is None
                 or reference.executable_path is None
-                or not same_letta_path(reference.executable_path, sys.executable)
+                or not same_path(reference.executable_path, sys.executable)
             ):
                 continue
             key = os.path.normcase(reference.agent_id)
@@ -267,7 +260,7 @@ def letta_runtime_contracts(hooks: LettaHooks) -> List[LettaRuntimeContract]:
         failure = failures.get(key, [])
         if len(guard) != 1 or len(post) != 1 or len(failure) != 1:
             continue
-        if not same_letta_path(post[0].script_path, failure[0].script_path):
+        if not same_path(post[0].script_path, failure[0].script_path):
             continue
         contracts.append(LettaRuntimeContract(
             guard[0].agent_id,

elydora/plugins/letta_installation.py

@@ -2,113 +2,41 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-import json
-import os
-from typing import List, Optional, Sequence
+from typing import List, Optional
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import (
-    FileChange,
-    FilePrecondition,
-    file_change,
-    source_change,
-    write_changes,
+from ._managed_files import MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    same_path,
+    validate_install_config,
+    validate_runtime_tree,
 )
+from ._transaction import FileChange, FilePrecondition, source_change, write_changes
 from .base import InstallConfig
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
-from .letta_command import same_letta_path
 from .letta_config import RenderedLettaDocument, letta_document_label
-from .letta_contract import AGENT_KEY, AUDIT_SCRIPT, GUARD_SCRIPT, elydora_dir
-from .letta_io import validate_api_origin, validate_private_key, validate_runtime_tree
+from .letta_contract import AGENT_KEY
 from .letta_sources import LettaSources, require_letta_hooks_enabled
 
-
-@dataclass(frozen=True)
-class LettaRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> LettaRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(elydora_dir(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_letta_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return LettaRuntimePaths(agent_id, agent_directory, guard_path, audit_path)
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(
-            f"Letta Code installation requires agent_name {AGENT_KEY}"
-        )
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
+PRODUCT = "Letta Code"
 
 
 def preflight_letta_installation(
     config: InstallConfig, sources: LettaSources
-) -> LettaRuntimePaths:
+) -> RuntimePaths:
     require_letta_hooks_enabled(sources)
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
-def _rendered_change(
-    rendered: RenderedLettaDocument,
-) -> Optional[FileChange]:
+def _rendered_change(rendered: RenderedLettaDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
     return source_change(
@@ -122,13 +50,9 @@ def _rendered_change(
     )
 
 
-def _present(changes: Sequence[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_letta_installation(
     config: InstallConfig,
-    paths: LettaRuntimePaths,
+    paths: RuntimePaths,
     rendered: RenderedLettaDocument,
 ) -> List[FileChange]:
     guard_script = generate_guard_script(AGENT_KEY, paths.agent_id)
@@ -136,50 +60,28 @@ def prepare_letta_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         fail_closed=True,
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    return _present([
-        _runtime_change(
-            paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "config.json"),
-            "Elydora runtime config",
-            _json_source(_runtime_config(config, paths.agent_id)),
-            0o600,
-            MAX_CONFIG_BYTES,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "private.key"),
-            "Elydora private key",
-            config.get("private_key", ""),
-            0o600,
-            MAX_SECRET_BYTES,
-        ),
-        _runtime_change(
-            paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-        ),
-        _rendered_change(rendered),
-    ])
+    return [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([_rendered_change(rendered)]),
+    ]
 
 
 def _read_only_preconditions(
-    sources: LettaSources, changed_path: Optional[str]
+    sources: LettaSources, changed_path: str
 ) -> List[FilePrecondition]:
     return [
         condition
         for condition in sources.preconditions
-        if changed_path is None
-        or not same_letta_path(condition.file_path, changed_path)
+        if not same_path(condition.file_path, changed_path)
     ]
 
 
-def commit_letta_installation(
-    changes: List[FileChange], sources: LettaSources
-) -> None:
+def commit_letta_installation(changes: List[FileChange], sources: LettaSources) -> None:
     write_changes(
         changes,
         "Install Letta Code hooks",
@@ -187,15 +89,11 @@ def commit_letta_installation(
     )
 
 
-def prepare_letta_uninstall(
-    rendered: RenderedLettaDocument,
-) -> Optional[FileChange]:
+def prepare_letta_uninstall(rendered: RenderedLettaDocument) -> Optional[FileChange]:
     return _rendered_change(rendered)
 
 
-def commit_letta_uninstall(
-    change: Optional[FileChange], sources: LettaSources
-) -> None:
+def commit_letta_uninstall(change: Optional[FileChange], sources: LettaSources) -> None:
     if change is None:
         return
     write_changes(

elydora/plugins/letta_io.py

@@ -2,200 +2,19 @@
 
 from __future__ import annotations
 
-import base64
-import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List, Tuple
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
-from .letta_command import same_letta_agent_id, same_letta_path
-from .letta_contract import AGENT_KEY, LettaRuntimeContract, elydora_dir
+from ._runtime import expected_runtime_scripts, runtime_contract_exists
+from ._strict_json import JsonObject
+from .letta_contract import AGENT_KEY, LettaRuntimeContract
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
+def _expected_scripts(agent_id: str, config: JsonObject) -> Tuple[str, str]:
+    return expected_runtime_scripts(AGENT_KEY, agent_id, config, fail_closed=True)
+
+
+def letta_runtime_files_exist(contracts: List[LettaRuntimeContract]) -> bool:
+    return any(
+        runtime_contract_exists(contract, AGENT_KEY, "Letta Code", _expected_scripts)
+        for contract in contracts
     )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"), validate=True
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(
-    value: Any, field: str, config_path: str
-) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject, expected_agent_id: str, config_path: str
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not same_letta_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime identity does not match Letta Code hooks: "
-            f"{config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        ("guard.py", "Elydora guard runtime"),
-        ("hook.py", "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_letta_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Letta Code agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _runtime_contract_exists(contract: LettaRuntimeContract) -> bool:
-    root = elydora_dir()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if (
-        not same_letta_path(os.path.dirname(agent_directory), root)
-        or not same_letta_path(
-            contract.audit_path, os.path.join(agent_directory, "hook.py")
-        )
-    ):
-        return False
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    expected_guard = generate_guard_script(AGENT_KEY, contract.agent_id)
-    expected_audit = generate_hook_script(
-        org_id=str(config["org_id"]),
-        agent_id=contract.agent_id,
-        kid=str(config["kid"]),
-        base_url=str(config["base_url"]),
-        fail_closed=True,
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
-    return guard.contents == expected_guard and audit.contents == expected_audit
-
-
-def letta_runtime_files_exist(
-    contracts: List[LettaRuntimeContract],
-) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)

elydora/plugins/letta_sources.py

@@ -4,15 +4,15 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 import os
-from typing import Dict, Optional, Tuple
+from typing import Optional, Tuple
 
 from ._managed_files import (
     MAX_SOURCE_BYTES,
     physical_directory_exists,
     read_physical_file,
 )
+from ._runtime import same_path, unique_preconditions
 from ._transaction import FilePrecondition
-from .letta_command import same_letta_path
 from .letta_config import (
     LettaDocument,
     create_letta_document,
@@ -76,15 +76,6 @@ def _source_precondition(document: LettaDocument) -> FilePrecondition:
     )
 
 
-def _deduplicate_preconditions(
-    values: list[FilePrecondition],
-) -> Tuple[FilePrecondition, ...]:
-    result: Dict[str, FilePrecondition] = {}
-    for value in values:
-        result.setdefault(_comparison_path(value.file_path), value)
-    return tuple(result.values())
-
-
 def _effective_disable(
     global_settings: LettaDocument,
     project: LettaDocument,
@@ -111,7 +102,7 @@ def read_letta_sources() -> LettaSources:
     physical_directory_exists(
         global_directory, "Letta Code global configuration directory"
     )
-    if not same_letta_path(project_directory, global_directory):
+    if not same_path(project_directory, global_directory):
         physical_directory_exists(
             project_directory, "Letta Code project configuration directory"
         )
@@ -141,7 +132,7 @@ def read_letta_sources() -> LettaSources:
         _effective_disable(
             global_settings, project, project_local, project_active
         ),
-        _deduplicate_preconditions(preconditions),
+        unique_preconditions(preconditions),
     )
 
 

elydora/plugins/qwen.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 from typing import Dict
 
+from ._runtime import RuntimePaths
 from .base import AgentPlugin, InstallConfig, PluginStatus
 from .qwen_config import render_qwen_document
 from .qwen_contract import (
@@ -15,7 +16,6 @@ from .qwen_contract import (
     qwen_runtime_contracts,
 )
 from .qwen_installation import (
-    QwenRuntimePaths,
     commit_qwen_installation,
     commit_qwen_uninstall,
     preflight_qwen_installation,
@@ -26,7 +26,7 @@ from .qwen_io import qwen_runtime_files_exist
 from .qwen_sources import read_qwen_sources
 
 
-def _installed_groups(paths: QwenRuntimePaths) -> Dict[str, JsonObject]:
+def _installed_groups(paths: RuntimePaths) -> Dict[str, JsonObject]:
     return {
         "PreToolUse": build_qwen_group(paths.guard_path, GUARD_HOOK_NAME),
         "PostToolUse": build_qwen_group(paths.audit_path, AUDIT_HOOK_NAME),

elydora/plugins/qwen_command.py

@@ -5,7 +5,15 @@ from __future__ import annotations
 from dataclasses import dataclass
 import os
 import sys
-from typing import Optional, Tuple
+from typing import Optional
+
+from ._runtime import managed_script_reference, same_path
+from ._shell_command import (
+    parse_posix_command,
+    parse_powershell_source,
+    posix_source,
+    powershell_source,
+)
 
 
 @dataclass(frozen=True)
@@ -14,121 +22,23 @@ class QwenRuntimeReference:
     script_path: str
 
 
-def same_qwen_path(left: str, right: str) -> bool:
-    return os.path.normcase(os.path.abspath(left)) == os.path.normcase(
-        os.path.abspath(right)
-    )
-
-
-def same_qwen_agent_id(left: str, right: str) -> bool:
-    return os.path.normcase(left) == os.path.normcase(right)
-
-
-def _quote_posix(value: str) -> str:
-    return "'" + value.replace("'", "'\"'\"'") + "'"
-
-
-def _quote_powershell(value: str) -> str:
-    return "'" + value.replace("'", "''") + "'"
-
-
 def build_qwen_command(script_path: str) -> str:
     if not os.path.isabs(sys.executable) or not os.path.isabs(script_path):
         raise ValueError(
             "Qwen Code hook commands require absolute executable and script paths"
         )
-    invocation = (
-        f"{_quote_powershell(sys.executable)} {_quote_powershell(script_path)}"
-        if os.name == "nt"
-        else f"{_quote_posix(sys.executable)} {_quote_posix(script_path)}"
-    )
-    return f"& {invocation}; exit $LASTEXITCODE" if os.name == "nt" else invocation
-
-
-def _read_posix_argument(command: str, start: int) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    apostrophe = "'\"'\"'"
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command.startswith(apostrophe, index):
-            value += "'"
-            index += len(apostrophe)
-            continue
-        if command[index] == "'":
-            return value, index + 1
-        value += command[index]
-        index += 1
-    return None
-
-
-def _parse_posix_command(command: str) -> Optional[Tuple[str, str]]:
-    executable = _read_posix_argument(command, 0)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_posix_argument(command, executable[1] + 1)
-    if script is None or script[1] != len(command):
-        return None
-    return executable[0], script[0]
-
-
-def _read_powershell_argument(
-    command: str, start: int
-) -> Optional[Tuple[str, int]]:
-    if start >= len(command) or command[start] != "'":
-        return None
-    value = ""
-    index = start + 1
-    while index < len(command):
-        if command[index] != "'":
-            value += command[index]
-            index += 1
-            continue
-        if index + 1 < len(command) and command[index + 1] == "'":
-            value += "'"
-            index += 2
-            continue
-        return value, index + 1
-    return None
-
-
-def _parse_powershell_command(command: str) -> Optional[Tuple[str, str]]:
-    if not command.startswith("& "):
-        return None
-    executable = _read_powershell_argument(command, 2)
-    if executable is None or executable[1] >= len(command):
-        return None
-    if command[executable[1]] != " ":
-        return None
-    script = _read_powershell_argument(command, executable[1] + 1)
-    if script is None or command[script[1] :] != "; exit $LASTEXITCODE":
-        return None
-    return executable[0], script[0]
+    return powershell_source(script_path) if os.name == "nt" else posix_source(script_path)
 
 
 def qwen_runtime_reference(
     command: str, script_name: str
 ) -> Optional[QwenRuntimeReference]:
     parsed = (
-        _parse_powershell_command(command)
+        parse_powershell_source(command)
         if os.name == "nt"
-        else _parse_posix_command(command)
+        else parse_posix_command(command)
     )
-    if (
-        parsed is None
-        or not same_qwen_path(parsed[0], sys.executable)
-        or not os.path.isabs(parsed[1])
-        or os.path.basename(parsed[1]) != script_name
-    ):
+    if parsed is None or not same_path(parsed[0], sys.executable):
         return None
-    agent_directory = os.path.dirname(parsed[1])
-    runtime_root = os.path.join(os.path.expanduser("~"), ".elydora")
-    if not same_qwen_path(os.path.dirname(agent_directory), runtime_root):
-        return None
-    agent_id = os.path.basename(agent_directory)
-    if agent_id in {"", ".", ".."}:
-        return None
-    return QwenRuntimeReference(agent_id, parsed[1])
+    reference = managed_script_reference(parsed[1], script_name)
+    return None if reference is None else QwenRuntimeReference(*reference)

elydora/plugins/qwen_contract.py

@@ -10,12 +10,11 @@ import shutil
 import subprocess  # nosec B404
 from typing import Any, Dict, List, Optional, Sequence, Tuple
 
+from ._runtime import same_agent_id, same_path
 from .qwen_command import (
     QwenRuntimeReference,
     build_qwen_command,
     qwen_runtime_reference,
-    same_qwen_agent_id,
-    same_qwen_path,
 )
 
 
@@ -102,10 +101,6 @@ class ManagedRemoval:
     remove_group: bool
 
 
-def elydora_dir() -> str:
-    return os.path.join(os.path.expanduser("~"), ".elydora")
-
-
 def _optional_string(value: JsonObject, field: str, label: str) -> None:
     if field in value and not isinstance(value[field], str):
         raise ValueError(f'{label} field "{field}" must be a string')
@@ -352,7 +347,7 @@ def managed_qwen_removals(
                 is not None
                 and (
                     agent_id is None
-                    or same_qwen_agent_id(reference.agent_id, agent_id)
+                    or same_agent_id(reference.agent_id, agent_id)
                 )
             )
             if indexes:
@@ -398,7 +393,7 @@ def qwen_runtime_contracts(hooks: QwenHooks) -> List[QwenRuntimeContract]:
         failure = failures.get(key, [])
         if len(guard) != 1 or len(post) != 1 or len(failure) != 1:
             continue
-        if not same_qwen_path(post[0].script_path, failure[0].script_path):
+        if not same_path(post[0].script_path, failure[0].script_path):
             continue
         contracts.append(QwenRuntimeContract(
             guard[0].agent_id,

elydora/plugins/qwen_installation.py

@@ -2,107 +2,41 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass
-import json
-import os
-from typing import List, Optional, Sequence
+from typing import List, Optional
 
-from elydora._runtime_paths import resolve_agent_directory
-
-from ._managed_files import MAX_CONFIG_BYTES, MAX_SECRET_BYTES, MAX_SOURCE_BYTES
-from ._transaction import FileChange, FilePrecondition, file_change, source_change, write_changes
+from ._managed_files import MAX_SOURCE_BYTES
+from ._runtime import (
+    DEFAULT_BASE_URL,
+    RuntimePaths,
+    present,
+    resolve_runtime_paths,
+    runtime_file_changes,
+    same_path,
+    validate_install_config,
+    validate_runtime_tree,
+)
+from ._transaction import FileChange, FilePrecondition, source_change, write_changes
 from .base import InstallConfig
 from .guard_template import generate_guard_script
 from .hook_template import generate_hook_script
-from .qwen_command import same_qwen_path
 from .qwen_config import RenderedQwenDocument, qwen_document_label
-from .qwen_contract import AGENT_KEY, AUDIT_SCRIPT, GUARD_SCRIPT, elydora_dir
-from .qwen_io import validate_api_origin, validate_private_key, validate_runtime_tree
+from .qwen_contract import AGENT_KEY
 from .qwen_sources import QwenSources, require_qwen_hooks_enabled
 
-
-@dataclass(frozen=True)
-class QwenRuntimePaths:
-    agent_id: str
-    agent_directory: str
-    guard_path: str
-    audit_path: str
-
-
-def _runtime_config(config: InstallConfig, agent_id: str) -> dict:
-    value = {
-        "org_id": config.get("org_id", ""),
-        "agent_id": agent_id,
-        "kid": config.get("kid", ""),
-        "base_url": config.get("base_url", "https://api.elydora.com"),
-        "agent_name": AGENT_KEY,
-    }
-    token = config.get("token")
-    if token:
-        value["token"] = token
-    return value
-
-
-def _json_source(value: dict) -> str:
-    return json.dumps(value, indent=2) + "\n"
-
-
-def _agent_paths(config: InstallConfig) -> QwenRuntimePaths:
-    agent_id = config.get("agent_id", "")
-    if not agent_id:
-        raise ValueError("agent_id is required")
-    agent_directory = resolve_agent_directory(elydora_dir(), agent_id)
-    guard_path = os.path.join(agent_directory, GUARD_SCRIPT)
-    audit_path = os.path.join(agent_directory, AUDIT_SCRIPT)
-    if not same_qwen_path(config.get("guard_script_path", ""), guard_path):
-        raise ValueError(
-            "Elydora guard runtime must use the managed agent directory: "
-            f"{guard_path}"
-        )
-    return QwenRuntimePaths(agent_id, agent_directory, guard_path, audit_path)
-
-
-def _validate_install_config(config: InstallConfig) -> None:
-    for field in ("org_id", "agent_id", "kid", "private_key", "base_url"):
-        value = config.get(field)
-        if not isinstance(value, str) or not value:
-            raise ValueError(f"{field} is required")
-    if config.get("agent_name") != AGENT_KEY:
-        raise ValueError(
-            f"Qwen Code installation requires agent_name {AGENT_KEY}"
-        )
-    validate_private_key(config["private_key"])
-    validate_api_origin(config["base_url"])
-    if "token" in config:
-        token = config["token"]
-        if not isinstance(token, str) or not token:
-            raise ValueError("token must be a non-empty string when provided")
-    _agent_paths(config)
+PRODUCT = "Qwen Code"
 
 
 def preflight_qwen_installation(
     config: InstallConfig, sources: QwenSources
-) -> QwenRuntimePaths:
+) -> RuntimePaths:
     require_qwen_hooks_enabled(sources)
-    _validate_install_config(config)
-    paths = _agent_paths(config)
-    validate_runtime_tree(paths.agent_directory, paths.agent_id)
+    validate_install_config(config, AGENT_KEY, PRODUCT)
+    paths = resolve_runtime_paths(config)
+    validate_runtime_tree(paths.agent_directory, paths.agent_id, AGENT_KEY, PRODUCT)
     return paths
 
 
-def _runtime_change(
-    file_path: str,
-    label: str,
-    next_source: str,
-    mode: int,
-    maximum_bytes: int = MAX_SOURCE_BYTES,
-) -> Optional[FileChange]:
-    return file_change(file_path, label, next_source, mode, maximum_bytes)
-
-
-def _rendered_change(
-    rendered: RenderedQwenDocument,
-) -> Optional[FileChange]:
+def _rendered_change(rendered: RenderedQwenDocument) -> Optional[FileChange]:
     if not rendered.changed:
         return None
     return source_change(
@@ -116,13 +50,9 @@ def _rendered_change(
     )
 
 
-def _present(changes: Sequence[Optional[FileChange]]) -> List[FileChange]:
-    return [change for change in changes if change is not None]
-
-
 def prepare_qwen_installation(
     config: InstallConfig,
-    paths: QwenRuntimePaths,
+    paths: RuntimePaths,
     rendered: RenderedQwenDocument,
 ) -> List[FileChange]:
     guard_script = generate_guard_script(AGENT_KEY, paths.agent_id)
@@ -130,49 +60,27 @@ def prepare_qwen_installation(
         org_id=config.get("org_id", ""),
         agent_id=paths.agent_id,
         kid=config.get("kid", ""),
-        base_url=config.get("base_url", "https://api.elydora.com"),
+        base_url=config.get("base_url", DEFAULT_BASE_URL),
         native_payload=True,
         agent_name=AGENT_KEY,
     )
-    return _present([
-        _runtime_change(
-            paths.guard_path, "Elydora guard runtime", guard_script, 0o700
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "config.json"),
-            "Elydora runtime config",
-            _json_source(_runtime_config(config, paths.agent_id)),
-            0o600,
-            MAX_CONFIG_BYTES,
-        ),
-        _runtime_change(
-            os.path.join(paths.agent_directory, "private.key"),
-            "Elydora private key",
-            config.get("private_key", ""),
-            0o600,
-            MAX_SECRET_BYTES,
-        ),
-        _runtime_change(
-            paths.audit_path, "Elydora audit runtime", audit_script, 0o700
-        ),
-        _rendered_change(rendered),
-    ])
+    return [
+        *runtime_file_changes(config, paths, AGENT_KEY, guard_script, audit_script),
+        *present([_rendered_change(rendered)]),
+    ]
 
 
 def _read_only_preconditions(
-    sources: QwenSources, changed_path: Optional[str]
+    sources: QwenSources, changed_path: str
 ) -> List[FilePrecondition]:
     return [
         condition
         for condition in sources.preconditions
-        if changed_path is None
-        or not same_qwen_path(condition.file_path, changed_path)
+        if not same_path(condition.file_path, changed_path)
     ]
 
 
-def commit_qwen_installation(
-    changes: List[FileChange], sources: QwenSources
-) -> None:
+def commit_qwen_installation(changes: List[FileChange], sources: QwenSources) -> None:
     write_changes(
         changes,
         "Install Qwen Code hooks",
@@ -180,15 +88,11 @@ def commit_qwen_installation(
     )
 
 
-def prepare_qwen_uninstall(
-    rendered: RenderedQwenDocument,
-) -> Optional[FileChange]:
+def prepare_qwen_uninstall(rendered: RenderedQwenDocument) -> Optional[FileChange]:
     return _rendered_change(rendered)
 
 
-def commit_qwen_uninstall(
-    change: Optional[FileChange], sources: QwenSources
-) -> None:
+def commit_qwen_uninstall(change: Optional[FileChange], sources: QwenSources) -> None:
     if change is None:
         return
     write_changes(

elydora/plugins/qwen_io.py

@@ -2,199 +2,19 @@
 
 from __future__ import annotations
 
-import base64
-import os
-from typing import Any, List, Optional
-import urllib.parse
+from typing import List, Tuple
 
-from ._managed_files import (
-    MAX_CONFIG_BYTES,
-    MAX_SECRET_BYTES,
-    physical_directory_exists,
-    physical_file_exists,
-    read_physical_file,
-)
-from ._strict_json import JsonObject, parse_json_object
-from .guard_template import generate_guard_script
-from .hook_template import generate_hook_script
-from .qwen_command import same_qwen_agent_id, same_qwen_path
-from .qwen_contract import AGENT_KEY, QwenRuntimeContract, elydora_dir
+from ._runtime import expected_runtime_scripts, runtime_contract_exists
+from ._strict_json import JsonObject
+from .qwen_contract import AGENT_KEY, QwenRuntimeContract
 
 
-def validate_api_origin(value: str, label: str = "base_url") -> None:
-    try:
-        parsed = urllib.parse.urlsplit(value)
-        hostname = parsed.hostname
-        parsed.port
-    except ValueError as error:
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL") from error
-    invalid_character = "\\" in value or any(
-        character.isspace() or ord(character) < 32 for character in value
+def _expected_scripts(agent_id: str, config: JsonObject) -> Tuple[str, str]:
+    return expected_runtime_scripts(AGENT_KEY, agent_id, config)
+
+
+def qwen_runtime_files_exist(contracts: List[QwenRuntimeContract]) -> bool:
+    return any(
+        runtime_contract_exists(contract, AGENT_KEY, "Qwen Code", _expected_scripts)
+        for contract in contracts
     )
-    if (
-        parsed.scheme not in ("http", "https")
-        or not parsed.netloc
-        or hostname is None
-        or invalid_character
-    ):
-        raise ValueError(f"{label} must be an absolute HTTP or HTTPS URL")
-    if (
-        parsed.username is not None
-        or parsed.password is not None
-        or parsed.query
-        or parsed.fragment
-    ):
-        raise ValueError(
-            f"{label} must exclude credentials, query parameters, and fragments"
-        )
-
-
-def validate_private_key(value: str, label: str = "private_key") -> None:
-    try:
-        padded = value + "=" * ((4 - len(value) % 4) % 4)
-        seed = base64.b64decode(
-            padded.replace("-", "+").replace("_", "/"), validate=True
-        )
-        canonical = base64.urlsafe_b64encode(seed).rstrip(b"=").decode("ascii")
-    except (ValueError, UnicodeEncodeError) as error:
-        raise ValueError(
-            f"{label} must be a canonical 32-byte base64url value"
-        ) from error
-    if len(seed) != 32 or canonical != value:
-        raise ValueError(f"{label} must be a canonical 32-byte base64url value")
-
-
-def _require_non_empty_string(
-    value: Any, field: str, config_path: str
-) -> str:
-    if not isinstance(value, str) or not value.strip():
-        raise ValueError(
-            f"Elydora runtime config {field} is invalid: {config_path}"
-        )
-    return value
-
-
-def _validate_runtime_config(
-    config: JsonObject, expected_agent_id: str, config_path: str
-) -> None:
-    supported = {"org_id", "agent_id", "kid", "base_url", "token", "agent_name"}
-    extra = next((key for key in config if key not in supported), None)
-    if extra is not None:
-        raise ValueError(
-            f'Elydora runtime config has unsupported field "{extra}": {config_path}'
-        )
-    _require_non_empty_string(config.get("org_id"), "org_id", config_path)
-    _require_non_empty_string(config.get("kid"), "kid", config_path)
-    agent_id = _require_non_empty_string(
-        config.get("agent_id"), "agent_id", config_path
-    )
-    if (
-        not same_qwen_agent_id(agent_id, expected_agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime identity does not match Qwen Code hooks: "
-            f"{config_path}"
-        )
-    if "token" in config:
-        _require_non_empty_string(config.get("token"), "token", config_path)
-    base_url = _require_non_empty_string(
-        config.get("base_url"), "base_url", config_path
-    )
-    validate_api_origin(base_url, "Elydora runtime config base_url")
-
-
-def _read_runtime_config(file_path: str) -> Optional[JsonObject]:
-    snapshot = read_physical_file(
-        file_path, "Elydora runtime config", MAX_CONFIG_BYTES
-    )
-    if snapshot is None:
-        return None
-    return parse_json_object(
-        snapshot.contents, f"Elydora runtime config at {file_path}"
-    )
-
-
-def validate_runtime_tree(agent_directory: str, agent_id: str) -> None:
-    root = elydora_dir()
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return
-    config_path = os.path.join(agent_directory, "config.json")
-    config = _read_runtime_config(config_path)
-    artifacts = (
-        ("private.key", "Elydora private key"),
-        ("guard.py", "Elydora guard runtime"),
-        ("hook.py", "Elydora audit runtime"),
-        ("chain-state.json", "Elydora chain state"),
-        ("status-cache.json", "Elydora status cache"),
-        ("error.log", "Elydora error log"),
-    )
-    artifact_exists = any(
-        physical_file_exists(os.path.join(agent_directory, name), label)
-        for name, label in artifacts
-    )
-    if config is None:
-        if artifact_exists:
-            raise ValueError(
-                "Elydora runtime identity cannot be verified without config.json: "
-                f"{agent_directory}"
-            )
-        return
-    configured_id = config.get("agent_id")
-    if (
-        not isinstance(configured_id, str)
-        or not same_qwen_agent_id(configured_id, agent_id)
-        or config.get("agent_name") != AGENT_KEY
-    ):
-        raise ValueError(
-            "Elydora runtime config identity does not match Qwen Code agent "
-            f"{agent_id}: {config_path}"
-        )
-
-
-def _runtime_contract_exists(contract: QwenRuntimeContract) -> bool:
-    root = elydora_dir()
-    agent_directory = os.path.dirname(contract.guard_path)
-    if (
-        not same_qwen_path(os.path.dirname(agent_directory), root)
-        or not same_qwen_path(
-            contract.audit_path, os.path.join(agent_directory, "hook.py")
-        )
-    ):
-        return False
-    if not physical_directory_exists(root, "Elydora runtime directory"):
-        return False
-    if not physical_directory_exists(
-        agent_directory, "Elydora agent runtime directory"
-    ):
-        return False
-    config_path = os.path.join(agent_directory, "config.json")
-    key_path = os.path.join(agent_directory, "private.key")
-    config = _read_runtime_config(config_path)
-    key = read_physical_file(key_path, "Elydora private key", MAX_SECRET_BYTES)
-    guard = read_physical_file(contract.guard_path, "Elydora guard runtime")
-    audit = read_physical_file(contract.audit_path, "Elydora audit runtime")
-    if config is None or key is None or guard is None or audit is None:
-        return False
-    _validate_runtime_config(config, contract.agent_id, config_path)
-    validate_private_key(key.contents, "Elydora private key")
-    expected_guard = generate_guard_script(AGENT_KEY, contract.agent_id)
-    expected_audit = generate_hook_script(
-        org_id=str(config["org_id"]),
-        agent_id=contract.agent_id,
-        kid=str(config["kid"]),
-        base_url=str(config["base_url"]),
-        native_payload=True,
-        agent_name=AGENT_KEY,
-    )
-    return guard.contents == expected_guard and audit.contents == expected_audit
-
-
-def qwen_runtime_files_exist(
-    contracts: List[QwenRuntimeContract],
-) -> bool:
-    return any(_runtime_contract_exists(contract) for contract in contracts)

elydora/plugins/qwen_sources.py

@@ -10,9 +10,9 @@ import tempfile
 from typing import Dict, List, Optional, Set, Tuple
 
 from ._dotenv import parse_dotenv
-from ._managed_files import MAX_SOURCE_BYTES, FileSnapshot, read_physical_file
+from ._managed_files import MAX_SOURCE_BYTES, read_physical_file
+from ._runtime import same_path, unique_preconditions
 from ._transaction import FilePrecondition
-from .qwen_command import same_qwen_path
 from .qwen_config import (
     QwenDocument,
     create_qwen_document,
@@ -127,7 +127,7 @@ def _resolve_qwen_routing() -> _RoutingResult:
     discovered_home = values.get("QWEN_HOME")
     if discovered_home and discovered_home != initial_qwen_home:
         discovered_directory = _resolve_config_path(discovered_home)
-        if not same_qwen_path(discovered_directory, initial_directory):
+        if not same_path(discovered_directory, initial_directory):
             read_candidate(os.path.join(discovered_directory, ".env"))
     resolved_home = values.get("QWEN_HOME")
     return _RoutingResult(
@@ -288,15 +288,6 @@ def _source_precondition(document: QwenDocument) -> FilePrecondition:
     )
 
 
-def _deduplicate_preconditions(
-    values: List[FilePrecondition],
-) -> Tuple[FilePrecondition, ...]:
-    result: Dict[str, FilePrecondition] = {}
-    for value in values:
-        result.setdefault(_comparison_path(value.file_path), value)
-    return tuple(result.values())
-
-
 def read_qwen_sources() -> QwenSources:
     routing = _resolve_qwen_routing()
     system_path = _system_settings_path()
@@ -355,7 +346,7 @@ def read_qwen_sources() -> QwenSources:
             system,
             workspace_active and workspace_trusted,
         ),
-        preconditions=_deduplicate_preconditions(preconditions),
+        preconditions=unique_preconditions(preconditions),
     )
 
 

tests/kiroide_support.py

@@ -0,0 +1,286 @@
+from __future__ import annotations
+
+import base64
+from dataclasses import dataclass
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+import json
+import os
+from pathlib import Path
+import subprocess
+import sys
+import threading
+from typing import Any
+
+import pytest
+
+from elydora.plugins import kiroide
+from elydora.plugins import (
+    kiroide_contract,
+    kiroide_installation,
+    kiroide_io,
+)
+from elydora.plugins.base import InstallConfig
+
+
+
+AGENT_ID = "agent-1"
+PRIVATE_KEY = base64.urlsafe_b64encode(bytes([11]) * 32).rstrip(b"=").decode()
+ROTATED_PRIVATE_KEY = (
+    base64.urlsafe_b64encode(bytes([12]) * 32).rstrip(b"=").decode()
+)
+
+
+@dataclass(frozen=True)
+class KiroIdeFixture:
+    home: Path
+    workspace: Path
+    config_path: Path
+    legacy_path: Path
+    agent_directory: Path
+    guard_path: Path
+    audit_path: Path
+    plugin: kiroide.KiroIdePlugin
+    config: InstallConfig
+
+
+def write_json(path: Path, value: Any) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(json.dumps(value, indent=2) + "\n", encoding="utf-8")
+
+
+def install_config(home: Path) -> InstallConfig:
+    return {
+        "org_id": "org-1",
+        "agent_id": AGENT_ID,
+        "agent_name": "kiroide",
+        "private_key": PRIVATE_KEY,
+        "kid": "kid-1",
+        "token": "token-1",
+        "base_url": "https://api.elydora.test",
+        "guard_script_path": str(home / ".elydora" / AGENT_ID / "guard.py"),
+    }
+
+
+def prepare_fixture(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    *,
+    current: Any = None,
+    legacy: Any = None,
+    base_url: str = "https://api.elydora.test",
+) -> KiroIdeFixture:
+    home = tmp_path / "home with spaces and 'quote %KIRO%"
+    workspace = tmp_path / "workspace with spaces"
+    home.mkdir(parents=True)
+    workspace.mkdir(parents=True)
+    config_path = workspace / ".kiro" / "hooks" / "elydora-audit.json"
+    legacy_path = home / ".kiro" / "hooks" / "elydora-audit.kiro.hook"
+    if current is not None:
+        if isinstance(current, str):
+            config_path.parent.mkdir(parents=True)
+            config_path.write_text(current, encoding="utf-8")
+        else:
+            write_json(config_path, current)
+    if legacy is not None:
+        if isinstance(legacy, str):
+            legacy_path.parent.mkdir(parents=True)
+            legacy_path.write_text(legacy, encoding="utf-8")
+        else:
+            write_json(legacy_path, legacy)
+    monkeypatch.setenv("HOME", str(home))
+    monkeypatch.setenv("USERPROFILE", str(home))
+    monkeypatch.chdir(workspace)
+    agent_directory = home / ".elydora" / AGENT_ID
+    config = install_config(home)
+    config["base_url"] = base_url
+    return KiroIdeFixture(
+        home,
+        workspace,
+        config_path,
+        legacy_path,
+        agent_directory,
+        agent_directory / "guard.py",
+        agent_directory / "hook.py",
+        kiroide.KiroIdePlugin(),
+        config,
+    )
+
+
+def find_hook(document: dict[str, Any], name: str) -> dict[str, Any]:
+    return next(hook for hook in document["hooks"] if hook.get("name") == name)
+
+
+def managed_document(guard_command: str, audit_command: str) -> dict[str, Any]:
+    return {
+        "version": "v1",
+        "hooks": [
+            {
+                "name": "elydora-guard",
+                "description": "Block tool use when the Elydora agent is frozen",
+                "trigger": "PreToolUse",
+                "matcher": ".*",
+                "action": {"type": "command", "command": guard_command},
+                "timeout": 10,
+                "enabled": True,
+            },
+            {
+                "name": "elydora-audit",
+                "description": "Record tool use in the Elydora audit trail",
+                "trigger": "PostToolUse",
+                "matcher": ".*",
+                "action": {"type": "command", "command": audit_command},
+                "timeout": 10,
+                "enabled": True,
+            },
+        ],
+    }
+
+
+def legacy_document(fixture: KiroIdeFixture, agent_id: str = AGENT_ID) -> dict:
+    agent_directory = fixture.home / ".elydora" / agent_id
+    return {
+        "name": "Elydora Audit",
+        "description": (
+            "Sends tool-use events to the Elydora tamper-evident audit platform"
+        ),
+        "version": "1.0.0",
+        "hooks": {
+            "pre_tool_use": {
+                "command": f'"{sys.executable}" {agent_directory / "guard.py"}',
+                "timeout_ms": 5000,
+            },
+            "post_tool_use": {
+                "command": str(agent_directory / "hook.py"),
+                "timeout_ms": 5000,
+            },
+        },
+    }
+
+
+def legacy_runtime_config(
+    fixture: KiroIdeFixture, agent_id: str = AGENT_ID
+) -> dict[str, str]:
+    return {
+        "org_id": "org-1",
+        "agent_id": agent_id,
+        "kid": "kid-1",
+        "base_url": "https://api.elydora.test",
+        "token": "",
+        "agent_name": "kiroide",
+    }
+
+
+def write_legacy_runtime(fixture: KiroIdeFixture, agent_id: str) -> Path:
+    agent_directory = fixture.home / ".elydora" / agent_id
+    write_json(
+        agent_directory / "config.json",
+        legacy_runtime_config(fixture, agent_id),
+    )
+    (agent_directory / "private.key").write_text(PRIVATE_KEY, encoding="utf-8")
+    (agent_directory / "guard.py").write_text("guard\n", encoding="utf-8")
+    (agent_directory / "hook.py").write_text("audit\n", encoding="utf-8")
+    return agent_directory
+
+
+def write_large_error_log(agent_directory: Path, marker: bytes) -> Path:
+    error_log = agent_directory / "error.log"
+    with error_log.open("wb") as file:
+        for _index in range(48):
+            file.write(marker * 4096)
+    if os.name != "nt":
+        error_log.chmod(0o600)
+    assert error_log.stat().st_size > 2 * 1024 * 1024
+    return error_log
+
+
+def run_command(
+    command: str, fixture: KiroIdeFixture, payload: dict[str, Any]
+) -> subprocess.CompletedProcess[str]:
+    return subprocess.run(
+        command,
+        shell=True,
+        cwd=fixture.workspace,
+        env={
+            **os.environ,
+            "HOME": str(fixture.home),
+            "USERPROFILE": str(fixture.home),
+        },
+        input=json.dumps(payload),
+        text=True,
+        capture_output=True,
+        check=False,
+    )
+
+
+class AuditHandler(BaseHTTPRequestHandler):
+    operations: list[dict[str, Any]] = []
+
+    def do_POST(self) -> None:
+        length = int(self.headers.get("Content-Length", "0"))
+        raw = self.rfile.read(length).decode("utf-8")
+        self.operations.append(json.loads(raw))
+        self.send_response(201)
+        self.end_headers()
+
+    def log_message(self, _format: str, *_args: object) -> None:
+        return
+
+
+@dataclass(frozen=True)
+class AuditServer:
+    server: ThreadingHTTPServer
+    thread: threading.Thread
+
+    @property
+    def base_url(self) -> str:
+        host, port = self.server.server_address
+        return f"http://{host}:{port}"
+
+    def close(self) -> None:
+        self.server.shutdown()
+        self.server.server_close()
+        self.thread.join()
+
+
+def start_audit_server() -> AuditServer:
+    AuditHandler.operations = []
+    server = ThreadingHTTPServer(("127.0.0.1", 0), AuditHandler)
+    thread = threading.Thread(target=server.serve_forever, daemon=True)
+    thread.start()
+    return AuditServer(server, thread)
+
+
+def prepare_installation(
+    fixture: KiroIdeFixture,
+    config: InstallConfig | None = None,
+) -> tuple[
+    kiroide_io.KiroIdeSources,
+    kiroide_installation.KiroIdeRuntimePaths,
+    kiroide_installation.PreparedKiroIdeInstallation,
+    kiroide_contract.RenderedKiroIdeDocument,
+]:
+    selected = fixture.config if config is None else config
+    sources = kiroide_io.read_kiroide_sources()
+    kiroide_contract.require_available_kiroide_hooks(sources.document.hooks)
+    paths = kiroide_installation.preflight_kiroide_installation(
+        selected, sources
+    )
+    hooks = kiroide_contract.without_managed_kiroide_hooks(
+        sources.document.hooks
+    )
+    rendered = kiroide_contract.render_kiroide_document(
+        sources.document,
+        [
+            *hooks,
+            kiroide_contract.build_kiroide_hook(
+                kiroide_contract.GUARD_NAME, paths.guard_path
+            ),
+            kiroide_contract.build_kiroide_hook(
+                kiroide_contract.AUDIT_NAME, paths.audit_path
+            ),
+        ],
+    )
+    prepared = kiroide_installation.prepare_kiroide_installation(
+        selected, paths, sources, rendered
+    )
+    return sources, paths, prepared, rendered

tests/runtime_removal_support.py

@@ -0,0 +1,83 @@
+from __future__ import annotations
+
+import argparse
+import base64
+import hashlib
+import json
+import os
+from pathlib import Path
+from typing import Any
+
+import pytest
+
+from elydora import cli
+
+
+AGENT_ID = "agent-1"
+AGENT_NAME = "opencode"
+PRIVATE_KEY = base64.urlsafe_b64encode(bytes([19]) * 32).rstrip(b"=").decode()
+
+
+def set_home(monkeypatch: pytest.MonkeyPatch, home: Path) -> None:
+    monkeypatch.setenv("HOME", str(home))
+    monkeypatch.setenv("USERPROFILE", str(home))
+
+
+def write_json(path: Path, value: Any) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(json.dumps(value, indent=2) + "\n", encoding="utf-8")
+
+
+def write_secret(path: Path, value: str) -> None:
+    path.write_text(value, encoding="utf-8")
+    if os.name != "nt":
+        path.chmod(0o600)
+
+
+def write_error_log(path: Path, chunks: int = 1) -> str:
+    digest = hashlib.sha256()
+    block = b"opaque historical error\n" * 4096
+    with path.open("wb") as file:
+        for _index in range(chunks):
+            file.write(block)
+            digest.update(block)
+    if os.name != "nt":
+        path.chmod(0o600)
+    return digest.hexdigest()
+
+
+def stream_digest(path: Path) -> str:
+    digest = hashlib.sha256()
+    with path.open("rb") as file:
+        while chunk := file.read(1024 * 1024):
+            digest.update(chunk)
+    return digest.hexdigest()
+
+
+def prepare_runtime(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    *,
+    agent_name: str = AGENT_NAME,
+) -> tuple[Path, Path]:
+    home = tmp_path / "home"
+    root = home / ".elydora"
+    agent = root / AGENT_ID
+    set_home(monkeypatch, home)
+    write_json(
+        agent / "config.json",
+        {"agent_id": AGENT_ID, "agent_name": agent_name},
+    )
+    return root, agent
+
+
+def uninstall_args(agent_name: str = AGENT_NAME) -> argparse.Namespace:
+    return cli.build_parser().parse_args(
+        [
+            "uninstall",
+            "--agent",
+            agent_name,
+            "--agent_id",
+            AGENT_ID,
+        ]
+    )

tests/test_cursor_plugin.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from copy import deepcopy
-import json
 import os
 from pathlib import Path
 import sys

tests/test_gemini_plugin.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import json
 import os
 from pathlib import Path
 import subprocess  # nosec B404

tests/test_kirocli_plugin.py

@@ -5,7 +5,6 @@ import json
 import os
 from pathlib import Path
 import subprocess
-import sys
 from typing import Any
 
 import pytest

tests/test_kiroide_commands.py

@@ -0,0 +1,222 @@
+from __future__ import annotations
+
+import copy
+import json
+import os
+from pathlib import Path
+import subprocess
+import stat
+
+import pytest
+
+from elydora.plugins._shell_command import is_python_executable, windows_powershell_path
+from elydora.plugins import (
+    kiroide_command,
+)
+
+from kiroide_support import (
+    AGENT_ID,
+    find_hook,
+    managed_document,
+    prepare_fixture,
+    write_json,
+)
+
+
+def test_kiroide_exact_managed_commands_survive_python_relocation(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    executable_name = "python.exe" if os.name == "nt" else "python3"
+    fake_executable = tmp_path / "other-runtime" / executable_name
+    with monkeypatch.context() as command_context:
+        command_context.setattr(
+            kiroide_command.sys, "executable", str(fake_executable)
+        )
+        guard_command = kiroide_command.build_kiroide_command(
+            str(fixture.guard_path)
+        )
+        audit_command = kiroide_command.build_kiroide_command(
+            str(fixture.audit_path)
+        )
+    stale_document = managed_document(guard_command, audit_command)
+    write_json(fixture.config_path, stale_document)
+
+    assert fixture.plugin.status() == {
+        "installed": False,
+        "agent": "kiroide",
+        "details": (
+            "Managed hooks are incomplete or invalid: "
+            f"{fixture.config_path}"
+        ),
+    }
+
+    fixture.plugin.install(fixture.config)
+    repaired = json.loads(fixture.config_path.read_text(encoding="utf-8"))
+    assert kiroide_command.kiroide_runtime_reference(
+        find_hook(repaired, "elydora-guard")["action"]["command"],
+        "guard.py",
+    ) is not None
+    assert kiroide_command.kiroide_runtime_reference(
+        find_hook(repaired, "elydora-audit")["action"]["command"],
+        "hook.py",
+    ) is not None
+
+    write_json(fixture.config_path, stale_document)
+    fixture.plugin.uninstall(AGENT_ID)
+
+    assert not fixture.config_path.exists()
+
+
+@pytest.mark.parametrize("damage", ["field", "orphan"])
+def test_kiroide_stale_command_ownership_survives_contract_drift(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    damage: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    executable_name = "python.exe" if os.name == "nt" else "python3"
+    fake_executable = tmp_path / "other-runtime" / executable_name
+    with monkeypatch.context() as command_context:
+        command_context.setattr(
+            kiroide_command.sys, "executable", str(fake_executable)
+        )
+        document = managed_document(
+            kiroide_command.build_kiroide_command(str(fixture.guard_path)),
+            kiroide_command.build_kiroide_command(str(fixture.audit_path)),
+        )
+    if damage == "field":
+        find_hook(document, "elydora-guard")["timeout"] = 9
+    else:
+        document["hooks"].remove(find_hook(document, "elydora-audit"))
+    write_json(fixture.config_path, document)
+
+    fixture.plugin.install(fixture.config)
+    repaired = json.loads(fixture.config_path.read_text(encoding="utf-8"))
+    assert len(repaired["hooks"]) == 2
+    assert all(hook["timeout"] == 10 for hook in repaired["hooks"])
+
+    write_json(fixture.config_path, document)
+    fixture.plugin.uninstall(AGENT_ID)
+
+    assert json.loads(fixture.config_path.read_text(encoding="utf-8"))[
+        "hooks"
+    ] == []
+
+
+@pytest.mark.skipif(os.name != "nt", reason="Windows launcher contract")
+def test_kiroide_current_commands_require_the_system_powershell_launcher(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    command = kiroide_command.build_kiroide_command(str(fixture.guard_path))
+    expected = f'"{windows_powershell_path()}"'
+    altered = command.replace(expected, r'"C:\Other\powershell.exe"', 1)
+
+    assert kiroide_command.kiroide_runtime_reference(altered, "guard.py") is None
+
+
+@pytest.mark.skipif(os.name != "nt", reason="Windows launcher contract")
+def test_kiroide_windows_launcher_fails_when_python_is_missing(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    missing_python = tmp_path / "missing-runtime" / "python.exe"
+    script_path = tmp_path / "guard.py"
+    with monkeypatch.context() as command_context:
+        command_context.setattr(
+            kiroide_command.sys, "executable", str(missing_python)
+        )
+        command = kiroide_command.build_kiroide_command(str(script_path))
+
+    result = subprocess.run(
+        command,
+        shell=True,
+        capture_output=True,
+        check=False,
+        text=True,
+    )
+
+    assert result.returncode == 1
+    assert result.stderr
+
+
+@pytest.mark.parametrize(
+    "executable_name",
+    ["python3.13t", "python3.14t", "python3.13d.exe", "pypy3", "pypy3.10.exe"],
+)
+def test_kiroide_ownership_accepts_supported_python_runtime_names(
+    executable_name: str,
+) -> None:
+    assert is_python_executable(executable_name)
+
+
+def test_kiroide_builder_rejects_unrecoverable_executable_names(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    with monkeypatch.context() as command_context:
+        command_context.setattr(
+            kiroide_command.sys,
+            "executable",
+            str(tmp_path / "embedded-runtime"),
+        )
+        with pytest.raises(ValueError, match="absolute Python executable"):
+            kiroide_command.build_kiroide_command(str(tmp_path / "guard.py"))
+
+
+@pytest.mark.parametrize("damage", ["orphan", "duplicate", "altered"])
+def test_kiroide_status_rejects_every_incomplete_managed_hook_set(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    damage: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    document = json.loads(fixture.config_path.read_text(encoding="utf-8"))
+    audit = find_hook(document, "elydora-audit")
+    if damage == "orphan":
+        document["hooks"].remove(audit)
+    elif damage == "duplicate":
+        document["hooks"].append(copy.deepcopy(audit))
+    else:
+        find_hook(document, "elydora-guard")["timeout"] = 9
+    write_json(fixture.config_path, document)
+
+    status = fixture.plugin.status()
+    assert status["installed"] is False
+    assert status["details"] == (
+        f"Managed hooks are incomplete or invalid: {fixture.config_path}"
+    )
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX permission contract")
+@pytest.mark.parametrize(
+    ("target", "message"),
+    [
+        ("key", "private key must be accessible only by its owner"),
+        ("config", "Token-bearing Elydora runtime config must be accessible"),
+    ],
+)
+def test_kiroide_repairs_and_enforces_owner_only_runtime_secrets(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    target: str,
+    message: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    paths = {
+        "key": fixture.agent_directory / "private.key",
+        "config": fixture.agent_directory / "config.json",
+    }
+    paths[target].chmod(0o644)
+
+    with pytest.raises(ValueError, match=message):
+        fixture.plugin.status()
+
+    fixture.plugin.install(fixture.config)
+    assert stat.S_IMODE(paths[target].stat().st_mode) == 0o600
+    assert fixture.plugin.status()["installed"] is True

tests/test_kiroide_uninstall.py

@@ -0,0 +1,359 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+import pytest
+
+from elydora.plugins import (
+    _transaction,
+    kiroide_installation,
+)
+from elydora.plugins.base import InstallConfig
+
+from kiroide_support import (
+    AGENT_ID,
+    PRIVATE_KEY,
+    ROTATED_PRIVATE_KEY,
+    find_hook,
+    legacy_document,
+    prepare_fixture,
+    prepare_installation,
+    write_json,
+    write_large_error_log,
+    write_legacy_runtime,
+)
+
+
+def test_kiroide_uninstall_removes_exact_ownership_and_preserves_user_hooks(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    user_hook = {
+        "name": "workspace-context",
+        "trigger": "SessionStart",
+        "action": {"type": "agent", "prompt": "Read AGENTS.md"},
+    }
+    fixture = prepare_fixture(
+        monkeypatch,
+        tmp_path,
+        current={"version": "v1", "owner": "workspace", "hooks": [user_hook]},
+    )
+    fixture.plugin.install(fixture.config)
+
+    fixture.plugin.uninstall("agent-2")
+    assert len(json.loads(fixture.config_path.read_text())["hooks"]) == 3
+    assert fixture.agent_directory.exists()
+    assert (fixture.agent_directory / "private.key").read_text(
+        encoding="utf-8"
+    ) == PRIVATE_KEY
+    fixture.plugin.uninstall(AGENT_ID)
+    assert json.loads(fixture.config_path.read_text(encoding="utf-8")) == {
+        "version": "v1",
+        "owner": "workspace",
+        "hooks": [user_hook],
+    }
+
+    owned = prepare_fixture(monkeypatch, tmp_path / "owned")
+    owned.plugin.install(owned.config)
+    owned.plugin.uninstall(AGENT_ID)
+    assert not owned.config_path.exists()
+
+
+def test_kiroide_uninstall_without_agent_id_removes_owned_runtime(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+
+    fixture.plugin.uninstall()
+
+    assert not fixture.config_path.exists()
+    assert not fixture.agent_directory.exists()
+    assert not (fixture.agent_directory / "private.key").exists()
+
+
+def test_kiroide_uninstall_without_agent_id_removes_current_and_legacy_runtimes(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    legacy_agent_id = "agent-2"
+    legacy_directory = write_legacy_runtime(fixture, legacy_agent_id)
+    write_json(fixture.legacy_path, legacy_document(fixture, legacy_agent_id))
+
+    fixture.plugin.uninstall()
+
+    assert not fixture.config_path.exists()
+    assert not fixture.legacy_path.exists()
+    assert not fixture.agent_directory.exists()
+    assert not legacy_directory.exists()
+    assert not (legacy_directory / "private.key").exists()
+
+
+def test_kiroide_no_id_uninstall_streams_all_oversized_error_logs(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    current_error = write_large_error_log(
+        fixture.agent_directory,
+        b"current runtime error\n",
+    )
+    legacy_agent_id = "agent-2"
+    legacy_directory = write_legacy_runtime(fixture, legacy_agent_id)
+    legacy_error = write_large_error_log(
+        legacy_directory,
+        b"legacy runtime error\n",
+    )
+    write_json(fixture.legacy_path, legacy_document(fixture, legacy_agent_id))
+
+    fixture.plugin.uninstall()
+
+    assert not current_error.exists()
+    assert not legacy_error.exists()
+    assert not fixture.agent_directory.exists()
+    assert not legacy_directory.exists()
+
+
+def test_kiroide_uninstall_without_agent_id_deduplicates_current_and_legacy_owner(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+
+    fixture.plugin.uninstall()
+
+    assert not fixture.config_path.exists()
+    assert not fixture.legacy_path.exists()
+    assert not fixture.agent_directory.exists()
+
+
+def test_kiroide_uninstall_without_agent_id_rejects_unknown_runtime_before_writes(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    legacy_agent_id = "agent-2"
+    legacy_directory = write_legacy_runtime(fixture, legacy_agent_id)
+    write_json(fixture.legacy_path, legacy_document(fixture, legacy_agent_id))
+    unknown = legacy_directory / "user-data.txt"
+    unknown.write_text("preserve\n", encoding="utf-8")
+    original_provider = fixture.config_path.read_bytes()
+    original_legacy = fixture.legacy_path.read_bytes()
+    original_key = (fixture.agent_directory / "private.key").read_bytes()
+    original_legacy_key = (legacy_directory / "private.key").read_bytes()
+
+    with pytest.raises(OSError, match="contains unmanaged entries"):
+        fixture.plugin.uninstall()
+
+    assert fixture.config_path.read_bytes() == original_provider
+    assert fixture.legacy_path.read_bytes() == original_legacy
+    assert (fixture.agent_directory / "private.key").read_bytes() == original_key
+    assert (legacy_directory / "private.key").read_bytes() == original_legacy_key
+    assert unknown.read_text(encoding="utf-8") == "preserve\n"
+
+
+def test_kiroide_uninstall_without_agent_id_rolls_back_provider_and_runtime(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    runtime_paths = [
+        fixture.guard_path,
+        fixture.audit_path,
+        fixture.agent_directory / "private.key",
+        fixture.agent_directory / "config.json",
+    ]
+    original_provider = fixture.config_path.read_bytes()
+    original_runtime = {path: path.read_bytes() for path in runtime_paths}
+    original_capture = _transaction._capture_physical
+
+    def fail_private_key_removal(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if Path(source) == fixture.agent_directory / "private.key" and (
+            destination.endswith(".rollback")
+        ):
+            raise OSError("injected private key removal failure")
+        original_capture(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_capture_physical", fail_private_key_removal)
+
+    with pytest.raises(OSError, match="injected private key removal failure"):
+        fixture.plugin.uninstall()
+
+    assert fixture.config_path.read_bytes() == original_provider
+    assert {path: path.read_bytes() for path in runtime_paths} == original_runtime
+
+
+def test_kiroide_transaction_rolls_back_when_legacy_cleanup_fails(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    original = {"version": "v1", "owner": "workspace", "hooks": []}
+    fixture = prepare_fixture(monkeypatch, tmp_path, current=original)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+    original_capture = _transaction._capture_physical
+
+    def fail_legacy_removal(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if Path(source) == fixture.legacy_path and destination.endswith(".rollback"):
+            raise OSError("injected legacy cleanup failure")
+        original_capture(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_capture_physical", fail_legacy_removal)
+
+    with pytest.raises(OSError, match="injected legacy cleanup failure"):
+        fixture.plugin.install(fixture.config)
+
+    assert json.loads(fixture.config_path.read_text(encoding="utf-8")) == original
+    assert fixture.legacy_path.exists()
+    for path in (
+        fixture.guard_path,
+        fixture.audit_path,
+        fixture.agent_directory / "config.json",
+        fixture.agent_directory / "private.key",
+    ):
+        assert not path.exists()
+    leftovers = list(fixture.config_path.parent.glob(".*.tmp"))
+    leftovers += list(fixture.config_path.parent.glob(".*.rollback"))
+    assert leftovers == []
+
+
+@pytest.mark.parametrize("swapped", ["workspace", "kiro", "hooks"])
+def test_kiroide_transaction_rejects_provider_directory_identity_swaps(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    swapped: str,
+) -> None:
+    fixture = prepare_fixture(
+        monkeypatch,
+        tmp_path,
+        current={"version": "v1", "hooks": []},
+    )
+    sources, paths, prepared, _rendered = prepare_installation(fixture)
+    monkeypatch.chdir(tmp_path)
+    original_paths = {
+        "workspace": fixture.workspace,
+        "kiro": fixture.workspace / ".kiro",
+        "hooks": fixture.workspace / ".kiro" / "hooks",
+    }
+    original = original_paths[swapped]
+    backup = original.with_name(original.name + "-original")
+    replacement = tmp_path / f"redirected-{swapped}"
+    if swapped == "workspace":
+        (replacement / ".kiro" / "hooks").mkdir(parents=True)
+        redirected_config = replacement / ".kiro" / "hooks" / "elydora-audit.json"
+    elif swapped == "kiro":
+        (replacement / "hooks").mkdir(parents=True)
+        redirected_config = replacement / "hooks" / "elydora-audit.json"
+    else:
+        replacement.mkdir()
+        redirected_config = replacement / "elydora-audit.json"
+    original.rename(backup)
+    try:
+        original.symlink_to(replacement, target_is_directory=True)
+    except OSError as error:
+        backup.rename(original)
+        pytest.skip(f"Directory symbolic links are unavailable: {error}")
+
+    with pytest.raises(OSError, match="not a physical directory|changed during"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert not redirected_config.exists()
+    assert not fixture.agent_directory.exists()
+
+
+def test_kiroide_key_rotation_pins_unchanged_provider_sources(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    original_key = (fixture.agent_directory / "private.key").read_text(
+        encoding="utf-8"
+    )
+    rotated = InstallConfig(**fixture.config)
+    rotated["private_key"] = ROTATED_PRIVATE_KEY
+    sources, paths, prepared, rendered = prepare_installation(fixture, rotated)
+    assert rendered.changed is False
+    document = json.loads(fixture.config_path.read_text(encoding="utf-8"))
+    document["concurrent_change"] = True
+    write_json(fixture.config_path, document)
+
+    with pytest.raises(OSError, match="Kiro IDE hooks changed during"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert (fixture.agent_directory / "private.key").read_text(
+        encoding="utf-8"
+    ) == original_key
+    assert json.loads(fixture.config_path.read_text(encoding="utf-8"))[
+        "concurrent_change"
+    ] is True
+
+
+def test_kiroide_noop_install_rejects_concurrent_provider_changes(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    sources, paths, prepared, rendered = prepare_installation(fixture)
+    assert prepared.changes == []
+    assert rendered.changed is False
+    document = json.loads(fixture.config_path.read_text(encoding="utf-8"))
+    find_hook(document, "elydora-guard")["enabled"] = False
+    write_json(fixture.config_path, document)
+
+    with pytest.raises(OSError, match="Kiro IDE hooks changed during"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert find_hook(
+        json.loads(fixture.config_path.read_text(encoding="utf-8")),
+        "elydora-guard",
+    )["enabled"] is False
+
+
+@pytest.mark.parametrize(
+    "relative_path",
+    ["private.key", "config.json", "guard.py", "hook.py"],
+)
+def test_kiroide_noop_install_pins_every_runtime_source(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    relative_path: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    sources, paths, prepared, _rendered = prepare_installation(fixture)
+    assert prepared.changes == []
+    assert len(prepared.runtime_preconditions) == 4
+    target = fixture.agent_directory / relative_path
+    concurrent = target.read_text(encoding="utf-8") + "\nconcurrent-change"
+    target.write_text(concurrent, encoding="utf-8")
+
+    with pytest.raises(OSError, match="changed during Install Kiro IDE hooks"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert target.read_text(encoding="utf-8") == concurrent

tests/test_kiroide_workspace.py

@@ -0,0 +1,367 @@
+from __future__ import annotations
+
+import json
+import os
+from pathlib import Path
+import stat
+
+import pytest
+
+from elydora import cli
+from elydora.plugins import (
+    _transaction,
+    kiroide_installation,
+)
+from elydora.plugins.base import InstallConfig
+
+from kiroide_support import (
+    AGENT_ID,
+    PRIVATE_KEY,
+    ROTATED_PRIVATE_KEY,
+    legacy_document,
+    legacy_runtime_config,
+    prepare_fixture,
+    prepare_installation,
+    write_json,
+)
+
+
+def test_kiroide_runtime_config_binds_agent_to_absolute_workspace(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+
+    runtime_config = json.loads(
+        (fixture.agent_directory / "config.json").read_text(encoding="utf-8")
+    )
+    assert runtime_config["workspace_root"] == str(fixture.workspace.resolve())
+    assert Path(runtime_config["workspace_root"]).is_absolute()
+
+
+def test_kiroide_rejects_same_agent_install_from_another_workspace(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    original_hook = fixture.config_path.read_bytes()
+    runtime_config_path = fixture.agent_directory / "config.json"
+    original_runtime = runtime_config_path.read_bytes()
+    second_workspace = tmp_path / "second workspace"
+    second_workspace.mkdir()
+    monkeypatch.chdir(second_workspace)
+
+    with pytest.raises(ValueError, match="bound to another workspace"):
+        fixture.plugin.install(fixture.config)
+
+    assert fixture.config_path.read_bytes() == original_hook
+    assert runtime_config_path.read_bytes() == original_runtime
+    assert not (second_workspace / ".kiro").exists()
+
+
+def test_kiroide_cli_uninstall_requires_bound_workspace(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    original_hook = fixture.config_path.read_bytes()
+    second_workspace = tmp_path / "second workspace"
+    second_workspace.mkdir()
+    args = cli.build_parser().parse_args(
+        [
+            "uninstall",
+            "--agent",
+            "kiroide",
+            "--agent_id",
+            AGENT_ID,
+        ]
+    )
+    monkeypatch.chdir(second_workspace)
+
+    with pytest.raises(ValueError, match="bound to another workspace"):
+        cli.cmd_uninstall(args)
+
+    assert fixture.config_path.read_bytes() == original_hook
+    assert fixture.agent_directory.exists()
+    assert not (second_workspace / ".kiro").exists()
+
+    monkeypatch.chdir(fixture.workspace)
+    cli.cmd_uninstall(args)
+    assert not fixture.config_path.exists()
+    assert not fixture.agent_directory.exists()
+
+
+def test_kiroide_install_claims_legacy_runtime_owner_from_matching_hooks(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    runtime_config_path = fixture.agent_directory / "config.json"
+    runtime_config = json.loads(runtime_config_path.read_text(encoding="utf-8"))
+    runtime_config.pop("workspace_root")
+    write_json(runtime_config_path, runtime_config)
+
+    fixture.plugin.install(fixture.config)
+
+    claimed = json.loads(runtime_config_path.read_text(encoding="utf-8"))
+    assert claimed["workspace_root"] == str(fixture.workspace.resolve())
+
+
+def test_kiroide_install_migrates_exact_global_legacy_runtime_owner(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+    runtime_config_path = fixture.agent_directory / "config.json"
+    write_json(runtime_config_path, legacy_runtime_config(fixture))
+    config = dict(fixture.config)
+    config.pop("token")
+
+    fixture.plugin.install(config)
+
+    migrated = json.loads(runtime_config_path.read_text(encoding="utf-8"))
+    assert migrated["workspace_root"] == str(fixture.workspace.resolve())
+    assert "token" not in migrated
+    assert fixture.config_path.exists()
+    assert not fixture.legacy_path.exists()
+
+
+def test_kiroide_legacy_owner_migration_rolls_back_runtime_claim(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+    runtime_config_path = fixture.agent_directory / "config.json"
+    original_runtime = legacy_runtime_config(fixture)
+    write_json(runtime_config_path, original_runtime)
+    original_capture = _transaction._capture_physical
+
+    def fail_legacy_removal(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if Path(source) == fixture.legacy_path and destination.endswith(
+            ".rollback"
+        ):
+            raise OSError("injected legacy migration failure")
+        original_capture(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_capture_physical", fail_legacy_removal)
+
+    with pytest.raises(OSError, match="injected legacy migration failure"):
+        fixture.plugin.install(fixture.config)
+
+    assert json.loads(runtime_config_path.read_text(encoding="utf-8")) == (
+        original_runtime
+    )
+    assert fixture.legacy_path.exists()
+    assert not fixture.config_path.exists()
+
+
+def test_kiroide_cli_uninstall_accepts_exact_global_legacy_ownership(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+    write_json(
+        fixture.agent_directory / "config.json",
+        legacy_runtime_config(fixture),
+    )
+    args = cli.build_parser().parse_args(
+        [
+            "uninstall",
+            "--agent",
+            "kiroide",
+            "--agent_id",
+            AGENT_ID,
+        ]
+    )
+
+    cli.cmd_uninstall(args)
+
+    assert not fixture.legacy_path.exists()
+    assert not fixture.agent_directory.exists()
+    assert not fixture.config_path.exists()
+
+
+def test_kiroide_rejects_unproved_legacy_runtime_owner(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    write_json(fixture.legacy_path, legacy_document(fixture, "agent-2"))
+    runtime_config_path = fixture.agent_directory / "config.json"
+    original = legacy_runtime_config(fixture)
+    write_json(runtime_config_path, original)
+
+    with pytest.raises(ValueError, match="token is invalid"):
+        fixture.plugin.install(fixture.config)
+
+    assert json.loads(runtime_config_path.read_text(encoding="utf-8")) == original
+    assert fixture.legacy_path.exists()
+    assert not fixture.config_path.exists()
+
+
+def test_kiroide_rejects_invalid_ownerless_legacy_runtime_config(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    write_json(fixture.legacy_path, legacy_document(fixture))
+    runtime_config_path = fixture.agent_directory / "config.json"
+    invalid = legacy_runtime_config(fixture)
+    invalid["token"] = " "
+    write_json(runtime_config_path, invalid)
+
+    with pytest.raises(ValueError, match="token is invalid"):
+        fixture.plugin.install(fixture.config)
+
+    assert json.loads(runtime_config_path.read_text(encoding="utf-8")) == invalid
+    assert fixture.legacy_path.exists()
+    assert not fixture.config_path.exists()
+
+
+@pytest.mark.parametrize(
+    ("owner", "message"),
+    [("relative", "must be absolute"), ("other", "bound to another workspace")],
+)
+def test_kiroide_status_rejects_invalid_runtime_workspace_owner(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    owner: str,
+    message: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    runtime_config_path = fixture.agent_directory / "config.json"
+    runtime_config = json.loads(runtime_config_path.read_text(encoding="utf-8"))
+    runtime_config["workspace_root"] = (
+        "relative" if owner == "relative" else str((tmp_path / "other").resolve())
+    )
+    write_json(runtime_config_path, runtime_config)
+
+    with pytest.raises(ValueError, match=message):
+        fixture.plugin.status()
+
+
+def test_kiroide_failed_install_removes_created_workspace_and_runtime_directories(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+
+    def fail_first_commit(
+        _source: str,
+        _destination: str,
+        _directory: _transaction.PinnedDirectory,
+    ) -> None:
+        raise OSError("injected Kiro IDE commit failure")
+
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_first_commit)
+
+    with pytest.raises(OSError, match="injected Kiro IDE commit failure"):
+        fixture.plugin.install(fixture.config)
+
+    assert not (fixture.workspace / ".kiro").exists()
+    # The durable transaction state directory survives failures by design;
+    # everything else under the runtime root must be rolled back.
+    elydora_root = fixture.home / ".elydora"
+    if elydora_root.exists():
+        assert [entry.name for entry in elydora_root.iterdir()] == ["transactions"]
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX permission contract")
+@pytest.mark.parametrize("relative_path", ["private.key", "config.json"])
+def test_kiroide_noop_install_pins_runtime_secret_modes(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    relative_path: str,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    sources, paths, prepared, _rendered = prepare_installation(fixture)
+    target = fixture.agent_directory / relative_path
+    target.chmod(0o640)
+
+    with pytest.raises(OSError, match="changed during Install Kiro IDE hooks"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert stat.S_IMODE(target.stat().st_mode) == 0o640
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX permission contract")
+def test_kiroide_key_rotation_rejects_concurrent_mode_changes(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.plugin.install(fixture.config)
+    rotated = InstallConfig(**fixture.config)
+    rotated["private_key"] = ROTATED_PRIVATE_KEY
+    sources, paths, prepared, _rendered = prepare_installation(
+        fixture, rotated
+    )
+    key_path = fixture.agent_directory / "private.key"
+    assert any(change.file_path == str(key_path) for change in prepared.changes)
+    key_path.chmod(0o640)
+
+    with pytest.raises(OSError, match="changed during installation"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert key_path.read_text(encoding="utf-8") == PRIVATE_KEY
+    assert stat.S_IMODE(key_path.stat().st_mode) == 0o640
+
+
+def test_kiroide_install_rejects_runtime_root_link_created_after_prepare(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    sources, paths, prepared, _rendered = prepare_installation(fixture)
+    runtime_root = fixture.home / ".elydora"
+    redirected_root = tmp_path / "redirected-runtime-root"
+    redirected_root.mkdir()
+    try:
+        runtime_root.symlink_to(redirected_root, target_is_directory=True)
+    except OSError as error:
+        pytest.skip(f"Directory symbolic links are unavailable: {error}")
+
+    with pytest.raises(OSError, match="not a physical directory|changed during"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert not (redirected_root / AGENT_ID / "private.key").exists()
+    assert not fixture.config_path.exists()
+
+
+def test_kiroide_install_rejects_agent_directory_identity_swap(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    fixture = prepare_fixture(monkeypatch, tmp_path)
+    fixture.agent_directory.mkdir(parents=True)
+    sources, paths, prepared, _rendered = prepare_installation(fixture)
+    original_directory = fixture.agent_directory.with_name("agent-original")
+    fixture.agent_directory.rename(original_directory)
+    fixture.agent_directory.mkdir()
+
+    with pytest.raises(OSError, match="changed during"):
+        kiroide_installation.commit_kiroide_installation(
+            prepared, sources, paths
+        )
+
+    assert not (fixture.agent_directory / "private.key").exists()
+    assert not fixture.config_path.exists()

tests/test_letta_plugin.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 import json
 import os
 from pathlib import Path
-from typing import Any
 
 import pytest
 

tests/test_pinned_directory.py

@@ -21,7 +21,7 @@ def test_darwin_private_directory_removal_uses_stdlib_dir_fd(
         calls.append((path, dir_fd))
 
     monkeypatch.setattr(_private_artifact.os, "rmdir", record_rmdir)
-    monkeypatch.setattr(_private_artifact.os, "supports_dir_fd", {record_rmdir})
+    monkeypatch.setattr(_private_artifact, "_RMDIR_SUPPORTS_DIR_FD", True)
 
     _private_artifact._remove_posix_private_directory(41, "private-container")
 

tests/test_runtime_removal.py

@@ -1,23 +1,14 @@
 from __future__ import annotations
 
-import argparse
-import base64
-import hashlib
 import json
 import os
 from pathlib import Path
 import stat
-import subprocess
-import sys
-from typing import Any
 
 import pytest
 
 from elydora import cli
 from elydora.plugins import (
-    _directory_removal,
-    _opaque_cleanup,
-    _opaque_removal,
     _transaction,
 )
 from elydora.plugins._runtime_removal import (
@@ -25,76 +16,15 @@ from elydora.plugins._runtime_removal import (
     finalize_runtime_removal,
     prepare_runtime_removal,
 )
-
-
-AGENT_ID = "agent-1"
-AGENT_NAME = "opencode"
-PRIVATE_KEY = base64.urlsafe_b64encode(bytes([19]) * 32).rstrip(b"=").decode()
-
-
-def _set_home(monkeypatch: pytest.MonkeyPatch, home: Path) -> None:
-    monkeypatch.setenv("HOME", str(home))
-    monkeypatch.setenv("USERPROFILE", str(home))
-
-
-def _write_json(path: Path, value: Any) -> None:
-    path.parent.mkdir(parents=True, exist_ok=True)
-    path.write_text(json.dumps(value, indent=2) + "\n", encoding="utf-8")
-
-
-def _write_secret(path: Path, value: str) -> None:
-    path.write_text(value, encoding="utf-8")
-    if os.name != "nt":
-        path.chmod(0o600)
-
-
-def _write_error_log(path: Path, chunks: int = 1) -> str:
-    digest = hashlib.sha256()
-    block = b"opaque historical error\n" * 4096
-    with path.open("wb") as file:
-        for _index in range(chunks):
-            file.write(block)
-            digest.update(block)
-    if os.name != "nt":
-        path.chmod(0o600)
-    return digest.hexdigest()
-
-
-def _stream_digest(path: Path) -> str:
-    digest = hashlib.sha256()
-    with path.open("rb") as file:
-        while chunk := file.read(1024 * 1024):
-            digest.update(chunk)
-    return digest.hexdigest()
-
-
-def _runtime(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-    *,
-    agent_name: str = AGENT_NAME,
-) -> tuple[Path, Path]:
-    home = tmp_path / "home"
-    root = home / ".elydora"
-    agent = root / AGENT_ID
-    _set_home(monkeypatch, home)
-    _write_json(
-        agent / "config.json",
-        {"agent_id": AGENT_ID, "agent_name": agent_name},
-    )
-    return root, agent
-
-
-def _uninstall_args(agent_name: str = AGENT_NAME) -> argparse.Namespace:
-    return cli.build_parser().parse_args(
-        [
-            "uninstall",
-            "--agent",
-            agent_name,
-            "--agent_id",
-            AGENT_ID,
-        ]
-    )
+from runtime_removal_support import (
+    AGENT_ID,
+    AGENT_NAME,
+    prepare_runtime,
+    stream_digest,
+    uninstall_args,
+    write_error_log,
+    write_json,
+)
 
 
 @pytest.mark.parametrize("entry_kind", ["file", "directory", "symlink"])
@@ -103,7 +33,7 @@ def test_cli_runtime_removal_rejects_unknown_entries_before_provider_mutation(
     tmp_path: Path,
     entry_kind: str,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     unknown = agent / "user-owned"
     if entry_kind == "file":
         unknown.write_text("preserve", encoding="utf-8")
@@ -127,7 +57,7 @@ def test_cli_runtime_removal_rejects_unknown_entries_before_provider_mutation(
     monkeypatch.setattr(cli, "_get_plugin", lambda _name: Plugin())
 
     with pytest.raises(OSError, match="unmanaged entries"):
-        cli.cmd_uninstall(_uninstall_args())
+        cli.cmd_uninstall(uninstall_args())
 
     assert provider_calls == []
     assert unknown.exists() or unknown.is_symlink()
@@ -138,7 +68,7 @@ def test_cli_skips_generic_cleanup_for_plugin_managed_runtime_removal(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path, agent_name="kiroide")
+    _root, agent = prepare_runtime(monkeypatch, tmp_path, agent_name="kiroide")
     provider_calls: list[str] = []
 
     class Plugin:
@@ -153,7 +83,7 @@ def test_cli_skips_generic_cleanup_for_plugin_managed_runtime_removal(
     monkeypatch.setattr(cli, "_get_plugin", lambda _name: Plugin())
     monkeypatch.setattr(cli, "prepare_runtime_removal", reject_generic_prepare)
 
-    cli.cmd_uninstall(_uninstall_args("kiroide"))
+    cli.cmd_uninstall(uninstall_args("kiroide"))
 
     assert provider_calls == [AGENT_ID]
     assert (agent / "config.json").is_file()
@@ -163,11 +93,11 @@ def test_runtime_removal_rejects_config_identity_drift(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
     assert plan is not None
     concurrent = {"agent_id": AGENT_ID, "agent_name": "cursor"}
-    _write_json(agent / "config.json", concurrent)
+    write_json(agent / "config.json", concurrent)
 
     with pytest.raises(OSError, match="changed"):
         commit_runtime_removal(plan)
@@ -181,7 +111,7 @@ def test_runtime_removal_treats_other_plugin_wrappers_as_unmanaged(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     wrapper_name = "augment-guard.cmd" if os.name == "nt" else "augment-guard.sh"
     user_file = agent / wrapper_name
     user_file.write_text("user-owned payload", encoding="utf-8")
@@ -198,7 +128,7 @@ def test_runtime_removal_rejects_directory_swaps_without_deleting_replacements(
     tmp_path: Path,
     swap: str,
 ) -> None:
-    root, agent = _runtime(monkeypatch, tmp_path)
+    root, agent = prepare_runtime(monkeypatch, tmp_path)
     plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
     assert plan is not None
 
@@ -228,7 +158,7 @@ def test_runtime_removal_rejects_concurrent_creation_of_missing_managed_file(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
     assert plan is not None
     concurrent = agent / "status-cache.json"
@@ -247,7 +177,7 @@ def test_runtime_removal_preserves_unknown_entry_created_before_finalize(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
     assert plan is not None
     _transaction.write_changes(
@@ -270,7 +200,7 @@ def test_runtime_removal_deletes_all_known_dynamic_files(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    root, agent = _runtime(monkeypatch, tmp_path)
+    root, agent = prepare_runtime(monkeypatch, tmp_path)
     dynamic = {
         "chain-state.json": '{"sequence":1}\n',
         "status-cache.json": '{"status":"active"}\n',
@@ -293,8 +223,8 @@ def test_runtime_removal_streams_oversized_error_log(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    root, agent = _runtime(monkeypatch, tmp_path)
-    expected_digest = _write_error_log(agent / "error.log", chunks=32)
+    root, agent = prepare_runtime(monkeypatch, tmp_path)
+    expected_digest = write_error_log(agent / "error.log", chunks=32)
     assert (agent / "error.log").stat().st_size > 2 * 1024 * 1024
 
     plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
@@ -312,9 +242,9 @@ def test_oversized_error_log_rolls_back_after_later_text_failure(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
 ) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
     error_log = agent / "error.log"
-    expected_digest = _write_error_log(error_log, chunks=32)
+    expected_digest = write_error_log(error_log, chunks=32)
     expected_mode = stat.S_IMODE(error_log.stat().st_mode)
     original_commit = _transaction._commit
 
@@ -329,464 +259,7 @@ def test_oversized_error_log_rolls_back_after_later_text_failure(
         commit_runtime_removal(plan)
 
     monkeypatch.setattr(_transaction, "_commit", original_commit)
-    assert _stream_digest(error_log) == expected_digest
+    assert stream_digest(error_log) == expected_digest
     assert stat.S_IMODE(error_log.stat().st_mode) == expected_mode
     assert (agent / "config.json").is_file()
     assert list(agent.glob("*.opaque-rollback")) == []
-
-
-def test_process_exit_after_opaque_removal_restores_error_log_on_restart(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    expected_digest = _write_error_log(error_log, chunks=4)
-    script = """
-import os
-import sys
-from elydora.plugins import _transaction
-from elydora.plugins._runtime_removal import prepare_runtime_removal, commit_runtime_removal
-
-agent_id, agent_name = sys.argv[1:]
-plan = prepare_runtime_removal(agent_id, agent_name)
-assert plan is not None
-_transaction._commit = lambda staged: os._exit(78)
-commit_runtime_removal(plan)
-"""
-    environment = os.environ.copy()
-    environment["HOME"] = os.environ["HOME"]
-    environment["USERPROFILE"] = os.environ["USERPROFILE"]
-
-    completed = subprocess.run(
-        [sys.executable, "-c", script, AGENT_ID, AGENT_NAME],
-        cwd=Path(__file__).resolve().parents[1],
-        env=environment,
-        check=False,
-    )
-
-    assert completed.returncode == 78
-    assert not error_log.exists()
-    _transaction.recover_pending_transactions()
-    assert _stream_digest(error_log) == expected_digest
-    assert (agent / "config.json").is_file()
-    assert list(agent.glob(".*.opaque-rollback")) == []
-
-
-def test_error_log_append_at_capture_boundary_fails_and_preserves_append(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    _write_error_log(error_log)
-    appended = b"concurrent append\n"
-    original_capture = _opaque_removal._capture_physical
-
-    def append_then_capture(staged: Any) -> None:
-        with error_log.open("ab") as file:
-            file.write(appended)
-            file.flush()
-            os.fsync(file.fileno())
-        original_capture(staged)
-
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    monkeypatch.setattr(
-        _opaque_removal,
-        "_capture_physical",
-        append_then_capture,
-    )
-
-    with pytest.raises(OSError, match="changed at commit boundary"):
-        commit_runtime_removal(plan)
-
-    assert error_log.read_bytes().endswith(appended)
-    assert (agent / "config.json").is_file()
-
-
-def test_error_log_replace_at_capture_boundary_preserves_both_files(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    original_digest = _write_error_log(error_log)
-    displaced = agent / "displaced-error.log"
-    replacement = b"concurrent replacement\n"
-    original_capture = _opaque_removal._capture_physical
-
-    def replace_then_capture(staged: Any) -> None:
-        error_log.rename(displaced)
-        error_log.write_bytes(replacement)
-        if os.name != "nt":
-            error_log.chmod(0o600)
-        original_capture(staged)
-
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    monkeypatch.setattr(
-        _opaque_removal,
-        "_capture_physical",
-        replace_then_capture,
-    )
-
-    with pytest.raises(OSError, match="changed at commit boundary"):
-        commit_runtime_removal(plan)
-
-    assert error_log.read_bytes() == replacement
-    assert _stream_digest(displaced) == original_digest
-    assert (agent / "config.json").is_file()
-
-
-def test_error_log_rollback_destination_collision_preserves_victim(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    original_digest = _write_error_log(error_log)
-    victim = b"concurrent opaque rollback destination\n"
-    rollback_path: Path | None = None
-    original_capture = _opaque_removal._capture_physical
-
-    def collide_with_rollback_destination(staged: Any) -> None:
-        nonlocal rollback_path
-        assert staged.rollback_path is not None
-        rollback_path = Path(staged.rollback_path)
-        rollback_path.write_bytes(victim)
-        if os.name != "nt":
-            rollback_path.chmod(0o600)
-        original_capture(staged)
-
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    monkeypatch.setattr(
-        _opaque_removal,
-        "_capture_physical",
-        collide_with_rollback_destination,
-    )
-
-    with pytest.raises(OSError, match="exist"):
-        commit_runtime_removal(plan)
-
-    assert rollback_path is not None
-    assert rollback_path.read_bytes() == victim
-    assert _stream_digest(error_log) == original_digest
-    assert (agent / "config.json").is_file()
-
-
-def test_error_log_cleanup_boundary_append_is_preserved_and_reported(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    _write_error_log(error_log)
-    appended = b"cleanup boundary append\n"
-    original_capture = _opaque_cleanup._capture_cleanup_physical
-
-    def append_then_capture(
-        staged: Any,
-        source_path: str,
-    ) -> None:
-        with Path(source_path).open("ab") as file:
-            file.write(appended)
-            file.flush()
-            os.fsync(file.fileno())
-        original_capture(staged, source_path)
-
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    monkeypatch.setattr(
-        _opaque_cleanup,
-        "_capture_cleanup_physical",
-        append_then_capture,
-    )
-
-    with pytest.raises(OSError, match="changed at cleanup boundary"):
-        commit_runtime_removal(plan)
-
-    preserved = list(agent.glob(".error.log.*.opaque-rollback"))
-    assert len(preserved) == 1
-    assert preserved[0].read_bytes().endswith(appended)
-    assert list(agent.glob(".*.elydora-quarantine")) == []
-
-
-def test_error_log_cleanup_replacement_preserves_both_identities(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    original_digest = _write_error_log(error_log)
-    replacement = b"concurrent cleanup replacement\n"
-    displaced = agent / "displaced-opaque-rollback"
-    rollback_path: Path | None = None
-    original_capture = _opaque_cleanup._capture_cleanup_physical
-
-    def replace_before_cleanup_capture(staged: Any, source_path: str) -> None:
-        nonlocal rollback_path
-        rollback_path = Path(source_path)
-        rollback_path.rename(displaced)
-        rollback_path.write_bytes(replacement)
-        if os.name != "nt":
-            rollback_path.chmod(0o600)
-        original_capture(staged, source_path)
-
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    monkeypatch.setattr(
-        _opaque_cleanup,
-        "_capture_cleanup_physical",
-        replace_before_cleanup_capture,
-    )
-
-    with pytest.raises(OSError, match="changed at cleanup boundary") as raised:
-        commit_runtime_removal(plan)
-
-    assert rollback_path is not None
-    assert f"concurrent data preserved at {rollback_path}" in str(raised.value)
-    assert rollback_path.read_bytes() == replacement
-    assert _stream_digest(displaced) == original_digest
-    assert list(agent.glob(".*.elydora-quarantine")) == []
-
-
-@pytest.mark.parametrize("entry_kind", ["directory", "symlink"])
-def test_error_log_rejects_nonphysical_entries_before_runtime_mutation(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-    entry_kind: str,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    original_config = (agent / "config.json").read_bytes()
-    if entry_kind == "directory":
-        error_log.mkdir()
-        (error_log / "marker").write_text("preserve", encoding="utf-8")
-    else:
-        target = tmp_path / "external-error.log"
-        target.write_text("preserve", encoding="utf-8")
-        try:
-            error_log.symlink_to(target)
-        except OSError as error:
-            pytest.skip(f"File symbolic links are unavailable: {error}")
-
-    with pytest.raises(OSError, match="not a physical file"):
-        prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-
-    assert (agent / "config.json").read_bytes() == original_config
-    assert error_log.exists() or error_log.is_symlink()
-
-
-@pytest.mark.skipif(os.name == "nt", reason="POSIX owner-only contract")
-def test_error_log_requires_owner_only_permissions_during_prepare(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    error_log = agent / "error.log"
-    error_log.write_text("historical error\n", encoding="utf-8")
-    error_log.chmod(0o640)
-
-    with pytest.raises(PermissionError, match="accessible only by its owner"):
-        prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-
-    assert error_log.read_text(encoding="utf-8") == "historical error\n"
-
-
-@pytest.mark.skipif(os.name == "nt", reason="POSIX parent-dirfd contract")
-def test_posix_runtime_directory_removal_cleans_exact_quarantine(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    original_rename = _directory_removal._rename_posix_into_quarantine
-    calls: list[tuple[int, str, int, str, str]] = []
-
-    def record_rename(
-        parent_descriptor: int,
-        source_name: str,
-        quarantine_descriptor: int,
-        source_path: str,
-        destination_path: str,
-    ) -> None:
-        calls.append(
-            (
-                parent_descriptor,
-                source_name,
-                quarantine_descriptor,
-                source_path,
-                destination_path,
-            )
-        )
-        original_rename(
-            parent_descriptor,
-            source_name,
-            quarantine_descriptor,
-            source_path,
-            destination_path,
-        )
-
-    monkeypatch.setattr(
-        _directory_removal,
-        "_rename_posix_into_quarantine",
-        record_rename,
-    )
-
-    commit_runtime_removal(plan)
-
-    assert len(calls) == 1
-    assert isinstance(calls[0][0], int)
-    assert calls[0][1] == AGENT_ID
-    assert isinstance(calls[0][2], int)
-    assert Path(calls[0][3]) == agent
-    assert Path(calls[0][4]).name == "entry"
-    quarantined = list(
-        Path(plan.runtime_root).glob(
-            f".{AGENT_ID}.*.elydora-removed/entry"
-        )
-    )
-    assert quarantined == []
-    assert list(Path(plan.runtime_root).glob(f".{AGENT_ID}.*.elydora-removed")) == []
-    assert not agent.exists()
-
-
-@pytest.mark.skipif(os.name == "nt", reason="POSIX quarantine contract")
-def test_posix_runtime_quarantine_preserves_atomic_boundary_swap(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    root, agent = _runtime(monkeypatch, tmp_path)
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    replacement = root / "replacement"
-    replacement.mkdir()
-    marker = replacement / "user-owned"
-    marker.write_text("preserve", encoding="utf-8")
-    original = root / "agent-original"
-    real_rename = _directory_removal._rename_posix_into_quarantine
-
-    def swap_then_quarantine(
-        parent_descriptor: int,
-        source_name: str,
-        quarantine_descriptor: int,
-        source_path: str,
-        destination_path: str,
-    ) -> None:
-        agent.rename(original)
-        replacement.rename(agent)
-        real_rename(
-            parent_descriptor,
-            source_name,
-            quarantine_descriptor,
-            source_path,
-            destination_path,
-        )
-
-    real_rmdir = _directory_removal.os.rmdir
-
-    def reject_path_rmdir(
-        path: str,
-        *,
-        dir_fd: int | None = None,
-    ) -> None:
-        if dir_fd is None:
-            raise AssertionError("POSIX runtime cleanup must use a parent dirfd")
-        real_rmdir(path, dir_fd=dir_fd)
-
-    monkeypatch.setattr(
-        _directory_removal,
-        "_rename_posix_into_quarantine",
-        swap_then_quarantine,
-    )
-    monkeypatch.setattr(_directory_removal.os, "rmdir", reject_path_rmdir)
-
-    with pytest.raises(OSError, match="changed while quarantining"):
-        commit_runtime_removal(plan)
-
-    quarantined_markers = list(
-        root.glob(f".{AGENT_ID}.*.elydora-removed/entry/user-owned")
-    )
-    assert len(quarantined_markers) == 1
-    assert quarantined_markers[0].read_text(encoding="utf-8") == "preserve"
-    assert original.is_dir()
-
-
-@pytest.mark.skipif(os.name != "nt", reason="Windows exact-handle contract")
-def test_windows_runtime_directory_removal_marks_exact_pinned_handle(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    _root, agent = _runtime(monkeypatch, tmp_path)
-    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
-    assert plan is not None
-    original_mark = _directory_removal._mark_windows_directory_for_deletion
-    observed: list[tuple[int, int]] = []
-
-    def record_mark(directory: Any) -> None:
-        assert directory.descriptor is not None
-        opened = os.fstat(directory.descriptor)
-        observed.append((opened.st_dev, opened.st_ino))
-        assert observed[-1] == (
-            plan.agent_snapshot.device,
-            plan.agent_snapshot.inode,
-        )
-        original_mark(directory)
-
-    monkeypatch.setattr(
-        _directory_removal,
-        "_mark_windows_directory_for_deletion",
-        record_mark,
-    )
-
-    commit_runtime_removal(plan)
-
-    assert observed == [(plan.agent_snapshot.device, plan.agent_snapshot.inode)]
-    assert not agent.exists()
-
-
-def test_kiroide_cli_install_failure_leaves_no_runtime_root(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    home = tmp_path / "home"
-    workspace = tmp_path / "workspace"
-    home.mkdir()
-    workspace.mkdir()
-    _set_home(monkeypatch, home)
-    monkeypatch.chdir(workspace)
-    key_path = tmp_path / "install-private.key"
-    _write_secret(key_path, PRIVATE_KEY)
-    args = cli.build_parser().parse_args(
-        [
-            "install",
-            "--agent",
-            "kiroide",
-            "--org_id",
-            "org-1",
-            "--agent_id",
-            AGENT_ID,
-            "--private_key_file",
-            str(key_path),
-            "--kid",
-            "kid-1",
-        ]
-    )
-
-    def fail_commit(_staged: object) -> None:
-        raise OSError("injected Kiro IDE CLI commit failure")
-
-    monkeypatch.setattr(_transaction, "_commit", fail_commit)
-
-    with pytest.raises(OSError, match="injected Kiro IDE CLI commit failure"):
-        cli.cmd_install(args)
-
-    # The durable transaction state directory survives failures by design;
-    # everything else under the runtime root must be rolled back.
-    elydora_root = home / ".elydora"
-    if elydora_root.exists():
-        assert [entry.name for entry in elydora_root.iterdir()] == ["transactions"]
-    assert not (workspace / ".kiro").exists()

tests/test_runtime_removal_directories.py

@@ -0,0 +1,222 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+from typing import Any
+
+import pytest
+
+from elydora import cli
+from elydora.plugins import (
+    _directory_removal,
+    _transaction,
+)
+from elydora.plugins._runtime_removal import (
+    commit_runtime_removal,
+    prepare_runtime_removal,
+)
+from runtime_removal_support import (
+    AGENT_ID,
+    AGENT_NAME,
+    PRIVATE_KEY,
+    prepare_runtime,
+    set_home,
+    write_secret,
+)
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX parent-dirfd contract")
+def test_posix_runtime_directory_removal_cleans_exact_quarantine(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    original_rename = _directory_removal._rename_posix_into_quarantine
+    calls: list[tuple[int, str, int, str, str]] = []
+
+    def record_rename(
+        parent_descriptor: int,
+        source_name: str,
+        quarantine_descriptor: int,
+        source_path: str,
+        destination_path: str,
+    ) -> None:
+        calls.append(
+            (
+                parent_descriptor,
+                source_name,
+                quarantine_descriptor,
+                source_path,
+                destination_path,
+            )
+        )
+        original_rename(
+            parent_descriptor,
+            source_name,
+            quarantine_descriptor,
+            source_path,
+            destination_path,
+        )
+
+    monkeypatch.setattr(
+        _directory_removal,
+        "_rename_posix_into_quarantine",
+        record_rename,
+    )
+
+    commit_runtime_removal(plan)
+
+    assert len(calls) == 1
+    assert isinstance(calls[0][0], int)
+    assert calls[0][1] == AGENT_ID
+    assert isinstance(calls[0][2], int)
+    assert Path(calls[0][3]) == agent
+    assert Path(calls[0][4]).name == "entry"
+    quarantined = list(
+        Path(plan.runtime_root).glob(
+            f".{AGENT_ID}.*.elydora-removed/entry"
+        )
+    )
+    assert quarantined == []
+    assert list(Path(plan.runtime_root).glob(f".{AGENT_ID}.*.elydora-removed")) == []
+    assert not agent.exists()
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX quarantine contract")
+def test_posix_runtime_quarantine_preserves_atomic_boundary_swap(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    root, agent = prepare_runtime(monkeypatch, tmp_path)
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    replacement = root / "replacement"
+    replacement.mkdir()
+    marker = replacement / "user-owned"
+    marker.write_text("preserve", encoding="utf-8")
+    original = root / "agent-original"
+    real_rename = _directory_removal._rename_posix_into_quarantine
+
+    def swap_then_quarantine(
+        parent_descriptor: int,
+        source_name: str,
+        quarantine_descriptor: int,
+        source_path: str,
+        destination_path: str,
+    ) -> None:
+        agent.rename(original)
+        replacement.rename(agent)
+        real_rename(
+            parent_descriptor,
+            source_name,
+            quarantine_descriptor,
+            source_path,
+            destination_path,
+        )
+
+    real_rmdir = _directory_removal.os.rmdir
+
+    def reject_path_rmdir(
+        path: str,
+        *,
+        dir_fd: int | None = None,
+    ) -> None:
+        if dir_fd is None:
+            raise AssertionError("POSIX runtime cleanup must use a parent dirfd")
+        real_rmdir(path, dir_fd=dir_fd)
+
+    monkeypatch.setattr(
+        _directory_removal,
+        "_rename_posix_into_quarantine",
+        swap_then_quarantine,
+    )
+    monkeypatch.setattr(_directory_removal.os, "rmdir", reject_path_rmdir)
+
+    with pytest.raises(OSError, match="changed while quarantining"):
+        commit_runtime_removal(plan)
+
+    quarantined_markers = list(
+        root.glob(f".{AGENT_ID}.*.elydora-removed/entry/user-owned")
+    )
+    assert len(quarantined_markers) == 1
+    assert quarantined_markers[0].read_text(encoding="utf-8") == "preserve"
+    assert original.is_dir()
+
+
+@pytest.mark.skipif(os.name != "nt", reason="Windows exact-handle contract")
+def test_windows_runtime_directory_removal_marks_exact_pinned_handle(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    original_mark = _directory_removal._mark_windows_directory_for_deletion
+    observed: list[tuple[int, int]] = []
+
+    def record_mark(directory: Any) -> None:
+        assert directory.descriptor is not None
+        opened = os.fstat(directory.descriptor)
+        observed.append((opened.st_dev, opened.st_ino))
+        assert observed[-1] == (
+            plan.agent_snapshot.device,
+            plan.agent_snapshot.inode,
+        )
+        original_mark(directory)
+
+    monkeypatch.setattr(
+        _directory_removal,
+        "_mark_windows_directory_for_deletion",
+        record_mark,
+    )
+
+    commit_runtime_removal(plan)
+
+    assert observed == [(plan.agent_snapshot.device, plan.agent_snapshot.inode)]
+    assert not agent.exists()
+
+
+def test_kiroide_cli_install_failure_leaves_no_runtime_root(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    home = tmp_path / "home"
+    workspace = tmp_path / "workspace"
+    home.mkdir()
+    workspace.mkdir()
+    set_home(monkeypatch, home)
+    monkeypatch.chdir(workspace)
+    key_path = tmp_path / "install-private.key"
+    write_secret(key_path, PRIVATE_KEY)
+    args = cli.build_parser().parse_args(
+        [
+            "install",
+            "--agent",
+            "kiroide",
+            "--org_id",
+            "org-1",
+            "--agent_id",
+            AGENT_ID,
+            "--private_key_file",
+            str(key_path),
+            "--kid",
+            "kid-1",
+        ]
+    )
+
+    def fail_commit(_staged: object) -> None:
+        raise OSError("injected Kiro IDE CLI commit failure")
+
+    monkeypatch.setattr(_transaction, "_commit", fail_commit)
+
+    with pytest.raises(OSError, match="injected Kiro IDE CLI commit failure"):
+        cli.cmd_install(args)
+
+    # The durable transaction state directory survives failures by design;
+    # everything else under the runtime root must be rolled back.
+    elydora_root = home / ".elydora"
+    if elydora_root.exists():
+        assert [entry.name for entry in elydora_root.iterdir()] == ["transactions"]
+    assert not (workspace / ".kiro").exists()

tests/test_runtime_removal_error_log.py

@@ -0,0 +1,286 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+import subprocess
+import sys
+from typing import Any
+
+import pytest
+
+from elydora.plugins import (
+    _opaque_cleanup,
+    _opaque_removal,
+    _transaction,
+)
+from elydora.plugins._runtime_removal import (
+    commit_runtime_removal,
+    prepare_runtime_removal,
+)
+from runtime_removal_support import (
+    AGENT_ID,
+    AGENT_NAME,
+    prepare_runtime,
+    stream_digest,
+    write_error_log,
+)
+
+
+def test_process_exit_after_opaque_removal_restores_error_log_on_restart(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    expected_digest = write_error_log(error_log, chunks=4)
+    script = """
+import os
+import sys
+from elydora.plugins import _transaction
+from elydora.plugins._runtime_removal import prepare_runtime_removal, commit_runtime_removal
+
+agent_id, agent_name = sys.argv[1:]
+plan = prepare_runtime_removal(agent_id, agent_name)
+assert plan is not None
+_transaction._commit = lambda staged: os._exit(78)
+commit_runtime_removal(plan)
+"""
+    environment = os.environ.copy()
+    environment["HOME"] = os.environ["HOME"]
+    environment["USERPROFILE"] = os.environ["USERPROFILE"]
+
+    completed = subprocess.run(
+        [sys.executable, "-c", script, AGENT_ID, AGENT_NAME],
+        cwd=Path(__file__).resolve().parents[1],
+        env=environment,
+        check=False,
+    )
+
+    assert completed.returncode == 78
+    assert not error_log.exists()
+    _transaction.recover_pending_transactions()
+    assert stream_digest(error_log) == expected_digest
+    assert (agent / "config.json").is_file()
+    assert list(agent.glob(".*.opaque-rollback")) == []
+
+
+def test_error_log_append_at_capture_boundary_fails_and_preserves_append(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    write_error_log(error_log)
+    appended = b"concurrent append\n"
+    original_capture = _opaque_removal._capture_physical
+
+    def append_then_capture(staged: Any) -> None:
+        with error_log.open("ab") as file:
+            file.write(appended)
+            file.flush()
+            os.fsync(file.fileno())
+        original_capture(staged)
+
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    monkeypatch.setattr(
+        _opaque_removal,
+        "_capture_physical",
+        append_then_capture,
+    )
+
+    with pytest.raises(OSError, match="changed at commit boundary"):
+        commit_runtime_removal(plan)
+
+    assert error_log.read_bytes().endswith(appended)
+    assert (agent / "config.json").is_file()
+
+
+def test_error_log_replace_at_capture_boundary_preserves_both_files(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    original_digest = write_error_log(error_log)
+    displaced = agent / "displaced-error.log"
+    replacement = b"concurrent replacement\n"
+    original_capture = _opaque_removal._capture_physical
+
+    def replace_then_capture(staged: Any) -> None:
+        error_log.rename(displaced)
+        error_log.write_bytes(replacement)
+        if os.name != "nt":
+            error_log.chmod(0o600)
+        original_capture(staged)
+
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    monkeypatch.setattr(
+        _opaque_removal,
+        "_capture_physical",
+        replace_then_capture,
+    )
+
+    with pytest.raises(OSError, match="changed at commit boundary"):
+        commit_runtime_removal(plan)
+
+    assert error_log.read_bytes() == replacement
+    assert stream_digest(displaced) == original_digest
+    assert (agent / "config.json").is_file()
+
+
+def test_error_log_rollback_destination_collision_preserves_victim(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    original_digest = write_error_log(error_log)
+    victim = b"concurrent opaque rollback destination\n"
+    rollback_path: Path | None = None
+    original_capture = _opaque_removal._capture_physical
+
+    def collide_with_rollback_destination(staged: Any) -> None:
+        nonlocal rollback_path
+        assert staged.rollback_path is not None
+        rollback_path = Path(staged.rollback_path)
+        rollback_path.write_bytes(victim)
+        if os.name != "nt":
+            rollback_path.chmod(0o600)
+        original_capture(staged)
+
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    monkeypatch.setattr(
+        _opaque_removal,
+        "_capture_physical",
+        collide_with_rollback_destination,
+    )
+
+    with pytest.raises(OSError, match="exist"):
+        commit_runtime_removal(plan)
+
+    assert rollback_path is not None
+    assert rollback_path.read_bytes() == victim
+    assert stream_digest(error_log) == original_digest
+    assert (agent / "config.json").is_file()
+
+
+def test_error_log_cleanup_boundary_append_is_preserved_and_reported(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    write_error_log(error_log)
+    appended = b"cleanup boundary append\n"
+    original_capture = _opaque_cleanup._capture_cleanup_physical
+
+    def append_then_capture(
+        staged: Any,
+        source_path: str,
+    ) -> None:
+        with Path(source_path).open("ab") as file:
+            file.write(appended)
+            file.flush()
+            os.fsync(file.fileno())
+        original_capture(staged, source_path)
+
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    monkeypatch.setattr(
+        _opaque_cleanup,
+        "_capture_cleanup_physical",
+        append_then_capture,
+    )
+
+    with pytest.raises(OSError, match="changed at cleanup boundary"):
+        commit_runtime_removal(plan)
+
+    preserved = list(agent.glob(".error.log.*.opaque-rollback"))
+    assert len(preserved) == 1
+    assert preserved[0].read_bytes().endswith(appended)
+    assert list(agent.glob(".*.elydora-quarantine")) == []
+
+
+def test_error_log_cleanup_replacement_preserves_both_identities(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    original_digest = write_error_log(error_log)
+    replacement = b"concurrent cleanup replacement\n"
+    displaced = agent / "displaced-opaque-rollback"
+    rollback_path: Path | None = None
+    original_capture = _opaque_cleanup._capture_cleanup_physical
+
+    def replace_before_cleanup_capture(staged: Any, source_path: str) -> None:
+        nonlocal rollback_path
+        rollback_path = Path(source_path)
+        rollback_path.rename(displaced)
+        rollback_path.write_bytes(replacement)
+        if os.name != "nt":
+            rollback_path.chmod(0o600)
+        original_capture(staged, source_path)
+
+    plan = prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+    assert plan is not None
+    monkeypatch.setattr(
+        _opaque_cleanup,
+        "_capture_cleanup_physical",
+        replace_before_cleanup_capture,
+    )
+
+    with pytest.raises(OSError, match="changed at cleanup boundary") as raised:
+        commit_runtime_removal(plan)
+
+    assert rollback_path is not None
+    assert f"concurrent data preserved at {rollback_path}" in str(raised.value)
+    assert rollback_path.read_bytes() == replacement
+    assert stream_digest(displaced) == original_digest
+    assert list(agent.glob(".*.elydora-quarantine")) == []
+
+
+@pytest.mark.parametrize("entry_kind", ["directory", "symlink"])
+def test_error_log_rejects_nonphysical_entries_before_runtime_mutation(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    entry_kind: str,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    original_config = (agent / "config.json").read_bytes()
+    if entry_kind == "directory":
+        error_log.mkdir()
+        (error_log / "marker").write_text("preserve", encoding="utf-8")
+    else:
+        target = tmp_path / "external-error.log"
+        target.write_text("preserve", encoding="utf-8")
+        try:
+            error_log.symlink_to(target)
+        except OSError as error:
+            pytest.skip(f"File symbolic links are unavailable: {error}")
+
+    with pytest.raises(OSError, match="not a physical file"):
+        prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+
+    assert (agent / "config.json").read_bytes() == original_config
+    assert error_log.exists() or error_log.is_symlink()
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX owner-only contract")
+def test_error_log_requires_owner_only_permissions_during_prepare(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    _root, agent = prepare_runtime(monkeypatch, tmp_path)
+    error_log = agent / "error.log"
+    error_log.write_text("historical error\n", encoding="utf-8")
+    error_log.chmod(0o640)
+
+    with pytest.raises(PermissionError, match="accessible only by its owner"):
+        prepare_runtime_removal(AGENT_ID, AGENT_NAME)
+
+    assert error_log.read_text(encoding="utf-8") == "historical error\n"

tests/test_transaction_directories.py

@@ -0,0 +1,245 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+import pytest
+
+from elydora.plugins import _transaction, _transaction_staging
+from elydora.plugins._managed_files import read_physical_directory
+from transaction_support import (
+    make_change,
+    swap_directory,
+)
+
+
+@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
+def test_staging_directory_swap_never_writes_secret_to_redirected_path(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    parent = tmp_path / "runtime"
+    backup = tmp_path / "runtime-original"
+    redirected = tmp_path / "runtime-redirected"
+    parent.mkdir()
+    redirected.mkdir()
+    target = parent / "private.key"
+    real_write = _transaction_staging.write_staged
+    swapped = False
+
+    def swap_then_stage(*args: object, **kwargs: object):
+        nonlocal swapped
+        if not swapped:
+            swapped = True
+            swap_directory(parent, backup, redirected)
+        return real_write(*args, **kwargs)
+
+    monkeypatch.setattr(_transaction_staging, "write_staged", swap_then_stage)
+
+    with pytest.raises(OSError, match="changed during transaction"):
+        _transaction.write_changes(
+            [make_change(target, None, "secret\n")],
+            "staging swap",
+        )
+
+    assert not (parent / "private.key").exists()
+    assert not (backup / "private.key").exists()
+    assert list(parent.iterdir()) == []
+    assert list(backup.iterdir()) == []
+
+
+@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
+def test_commit_directory_swap_rolls_back_inside_pinned_directory(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    parent = tmp_path / "runtime"
+    backup = tmp_path / "runtime-original"
+    redirected = tmp_path / "runtime-redirected"
+    parent.mkdir()
+    redirected.mkdir()
+    target = parent / "private.key"
+    real_replace = _transaction._replace_physical
+    swapped = False
+
+    def swap_then_replace(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal swapped
+        if not swapped:
+            swapped = True
+            swap_directory(parent, backup, redirected)
+        real_replace(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", swap_then_replace)
+
+    with pytest.raises(OSError, match="changed during transaction"):
+        _transaction.write_changes(
+            [make_change(target, None, "secret\n")],
+            "commit swap",
+        )
+
+    assert not (parent / "private.key").exists()
+    assert not (backup / "private.key").exists()
+    assert list(parent.iterdir()) == []
+    assert list(backup.iterdir()) == []
+
+
+def test_failed_transaction_removes_only_created_empty_directories(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    kiro = tmp_path / ".kiro"
+    hooks = kiro / "hooks"
+    hooks.mkdir(parents=True)
+    kiro_snapshot = read_physical_directory(str(kiro), "Kiro directory")
+    hooks_snapshot = read_physical_directory(str(hooks), "hooks directory")
+    target = hooks / "elydora-audit.json"
+
+    def fail_replace(
+        _source: str,
+        _destination: str,
+        _directory: _transaction.PinnedDirectory,
+    ) -> None:
+        raise OSError("injected commit failure")
+
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
+
+    with pytest.raises(OSError, match="injected commit failure"):
+        _transaction.write_changes(
+            [make_change(target, None, "{}\n")],
+            "created directory recovery",
+            directory_preconditions=[
+                _transaction.DirectoryPrecondition(
+                    str(kiro), "Kiro directory", kiro_snapshot, created=True
+                ),
+                _transaction.DirectoryPrecondition(
+                    str(hooks), "hooks directory", hooks_snapshot, created=True
+                ),
+            ],
+        )
+
+    assert not hooks.exists()
+    assert not kiro.exists()
+
+
+def test_created_directory_recovery_keeps_parent_and_child_pinned(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    kiro = tmp_path / ".kiro"
+    hooks = kiro / "hooks"
+    hooks.mkdir(parents=True)
+    kiro_snapshot = read_physical_directory(str(kiro), "Kiro directory")
+    hooks_snapshot = read_physical_directory(str(hooks), "hooks directory")
+    target = hooks / "elydora-audit.json"
+    observed: list[tuple[Path, Path]] = []
+    real_remove = _transaction_staging.remove_pinned_empty_directory
+
+    def observe_pins(
+        parent: object,
+        child: object,
+        *,
+        require_empty: bool = True,
+    ) -> None:
+        assert isinstance(parent, _transaction.PinnedDirectory)
+        assert isinstance(child, _transaction.PinnedDirectory)
+        assert parent.descriptor is not None
+        assert child.descriptor is not None
+        assert os.fstat(child.descriptor).st_ino == child.snapshot.inode
+        observed.append((Path(parent.path), Path(child.path)))
+        real_remove(parent, child, require_empty=require_empty)
+
+    def fail_replace(
+        _source: str,
+        _destination: str,
+        _directory: _transaction.PinnedDirectory,
+    ) -> None:
+        raise OSError("injected pinned cleanup failure")
+
+    monkeypatch.setattr(
+        _transaction_staging,
+        "remove_pinned_empty_directory",
+        observe_pins,
+    )
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
+
+    with pytest.raises(OSError, match="injected pinned cleanup failure"):
+        _transaction.write_changes(
+            [make_change(target, None, "{}\n")],
+            "pinned directory recovery",
+            directory_preconditions=[
+                _transaction.DirectoryPrecondition(
+                    str(kiro), "Kiro directory", kiro_snapshot, created=True
+                ),
+                _transaction.DirectoryPrecondition(
+                    str(hooks), "hooks directory", hooks_snapshot, created=True
+                ),
+            ],
+        )
+
+    expected = [(kiro, hooks), (tmp_path, kiro)]
+    assert observed == expected
+    assert not kiro.exists()
+
+
+@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
+def test_created_directory_recovery_preserves_swapped_directory(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    created = tmp_path / "created"
+    created.mkdir()
+    created_snapshot = read_physical_directory(str(created), "created directory")
+    target = created / "managed.json"
+    replacement = tmp_path / "replacement"
+    replacement.mkdir()
+    marker = replacement / "user-owned"
+    marker.write_text("preserve", encoding="utf-8")
+    original = tmp_path / "created-original"
+    real_remove = _transaction_staging.remove_pinned_empty_directory
+
+    def swap_before_removal(
+        parent: _transaction.PinnedDirectory,
+        child: _transaction.PinnedDirectory,
+        *,
+        require_empty: bool = True,
+    ) -> None:
+        created.rename(original)
+        replacement.rename(created)
+        real_remove(parent, child, require_empty=require_empty)
+
+    def fail_replace(
+        _source: str,
+        _destination: str,
+        _directory: _transaction.PinnedDirectory,
+    ) -> None:
+        raise OSError("injected swap cleanup failure")
+
+    monkeypatch.setattr(
+        _transaction_staging,
+        "remove_pinned_empty_directory",
+        swap_before_removal,
+    )
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
+
+    with pytest.raises(OSError, match="recovery failed"):
+        _transaction.write_changes(
+            [make_change(target, None, "{}\n")],
+            "swapped directory recovery",
+            directory_preconditions=[
+                _transaction.DirectoryPrecondition(
+                    str(created),
+                    "created directory",
+                    created_snapshot,
+                    created=True,
+                )
+            ],
+        )
+
+    assert (created / marker.name).read_text(encoding="utf-8") == "preserve"
+    assert original.is_dir()
+    assert Path(_transaction.active_journal_path()).is_file()
+    _transaction.clear_journal()

tests/test_transaction_rollback.py

@@ -0,0 +1,404 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+import pytest
+
+from elydora.plugins import _transaction
+from transaction_support import (
+    make_change,
+    write_source,
+)
+
+
+def test_final_replace_exception_after_success_restores_original(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    write_source(target, "old\n")
+    real_replace = _transaction._replace_physical
+
+    def replace_then_raise(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        real_replace(source, destination, directory)
+        if os.path.abspath(destination) == os.path.abspath(str(target)):
+            raise OSError("injected post-replace failure")
+
+    monkeypatch.setattr(_transaction, "_replace_physical", replace_then_raise)
+
+    with pytest.raises(OSError, match="injected post-replace failure"):
+        _transaction.write_changes(
+            [make_change(target, "old\n", "new\n")],
+            "post-replace failure",
+        )
+
+    assert target.read_text(encoding="utf-8") == "old\n"
+    assert list(tmp_path.glob(".*.rollback")) == []
+
+
+def test_capture_exception_after_success_restores_original(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    write_source(target, "old\n")
+    real_capture = _transaction._capture_physical
+
+    def capture_then_raise(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        real_capture(source, destination, directory)
+        raise OSError("injected post-capture failure")
+
+    monkeypatch.setattr(_transaction, "_capture_physical", capture_then_raise)
+
+    with pytest.raises(OSError, match="injected post-capture failure"):
+        _transaction.write_changes(
+            [make_change(target, "old\n", "new\n")],
+            "post-capture failure",
+        )
+
+    assert target.read_text(encoding="utf-8") == "old\n"
+    assert list(tmp_path.glob(".*.rollback")) == []
+
+
+def test_rollback_reservation_collision_preserves_victim_and_original(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    write_source(target, "old\n")
+    victim = "concurrent rollback destination\n"
+    collision_path: Path | None = None
+
+    def collide_with_rollback_destination(
+        _source: str,
+        destination: str,
+        _directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal collision_path
+        if destination.endswith(".rollback"):
+            collision_path = Path(destination)
+            write_source(collision_path, victim)
+
+    monkeypatch.setattr(
+        _transaction,
+        "_capture_physical",
+        collide_with_rollback_destination,
+    )
+
+    with pytest.raises(OSError, match="exist"):
+        _transaction.write_changes(
+            [make_change(target, "old\n", "new\n")],
+            "rollback destination collision",
+        )
+
+    assert collision_path is not None
+    assert target.read_text(encoding="utf-8") == "old\n"
+    assert collision_path.read_text(encoding="utf-8") == victim
+
+
+def test_final_install_does_not_overwrite_concurrent_target(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    write_source(target, "old\n")
+    real_replace = _transaction._replace_physical
+    injected = False
+
+    def create_target_before_install(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal injected
+        if not injected and os.path.abspath(destination) == os.path.abspath(target):
+            injected = True
+            write_source(target, "concurrent\n")
+        real_replace(source, destination, directory)
+
+    monkeypatch.setattr(
+        _transaction,
+        "_replace_physical",
+        create_target_before_install,
+    )
+
+    with pytest.raises(OSError, match="original content preserved"):
+        _transaction.write_changes(
+            [make_change(target, "old\n", "new\n")],
+            "no-clobber install",
+        )
+
+    assert injected
+    assert target.read_text(encoding="utf-8") == "concurrent\n"
+    rollbacks = list(tmp_path.glob(".*.rollback"))
+    assert len(rollbacks) == 1
+    assert rollbacks[0].read_text(encoding="utf-8") == "old\n"
+
+
+def test_restore_does_not_overwrite_concurrent_target(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    second = tmp_path / "second.txt"
+    write_source(target, "old\n")
+    write_source(second, "second-old\n")
+    real_replace = _transaction._replace_physical
+    real_restore = _transaction._restore_physical
+    injected = False
+
+    def fail_second_commit(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if os.path.abspath(destination) == os.path.abspath(second):
+            raise OSError("injected second failure")
+        real_replace(source, destination, directory)
+
+    def create_target_before_restore(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal injected
+        if not injected and os.path.abspath(destination) == os.path.abspath(target):
+            injected = True
+            write_source(target, "concurrent recovery\n")
+        real_restore(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
+    monkeypatch.setattr(
+        _transaction,
+        "_restore_physical",
+        create_target_before_restore,
+    )
+
+    with pytest.raises(OSError, match="original content preserved"):
+        _transaction.write_changes(
+            [
+                make_change(target, "old\n", "new\n"),
+                make_change(second, "second-old\n", "second-new\n"),
+            ],
+            "no-clobber restoration",
+        )
+
+    assert injected
+    assert target.read_text(encoding="utf-8") == "concurrent recovery\n"
+    rollbacks = list(tmp_path.glob(".*.rollback"))
+    assert len(rollbacks) == 1
+    assert rollbacks[0].read_text(encoding="utf-8") == "old\n"
+    assert Path(_transaction.active_journal_path()).is_file()
+    _transaction.clear_journal()
+
+
+def test_restore_source_replacement_reports_existing_preserved_path(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    target = tmp_path / "target.txt"
+    second = tmp_path / "second.txt"
+    displaced = tmp_path / "displaced-original.txt"
+    write_source(target, "old\n")
+    write_source(second, "second-old\n")
+    real_replace = _transaction._replace_physical
+    real_restore = _transaction._restore_physical
+    rollback_path: Path | None = None
+
+    def fail_second_commit(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if os.path.abspath(destination) == os.path.abspath(second):
+            raise OSError("injected second failure")
+        real_replace(source, destination, directory)
+
+    def replace_restore_source(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal rollback_path
+        if (
+            rollback_path is None
+            and source.endswith(".rollback")
+            and os.path.abspath(destination) == os.path.abspath(target)
+        ):
+            rollback_path = Path(source)
+            rollback_path.rename(displaced)
+            write_source(rollback_path, "concurrent recovery source\n")
+        real_restore(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
+    monkeypatch.setattr(_transaction, "_restore_physical", replace_restore_source)
+
+    with pytest.raises(OSError, match="recovery source changed") as raised:
+        _transaction.write_changes(
+            [
+                make_change(target, "old\n", "new\n"),
+                make_change(second, "second-old\n", "second-new\n"),
+            ],
+            "restore source replacement",
+        )
+
+    assert rollback_path is not None
+    assert f"concurrent data preserved at {rollback_path}" in str(raised.value)
+    assert rollback_path.read_text(encoding="utf-8") == "concurrent recovery source\n"
+    assert displaced.read_text(encoding="utf-8") == "old\n"
+    assert target.read_text(encoding="utf-8") == "new\n"
+    assert second.read_text(encoding="utf-8") == "second-old\n"
+    assert Path(_transaction.active_journal_path()).is_file()
+    _transaction.clear_journal()
+
+
+def test_creation_rollback_captures_and_preserves_concurrent_replacement(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    created = tmp_path / "created.txt"
+    second = tmp_path / "second.txt"
+    write_source(second, "second-old\n")
+    real_replace = _transaction._replace_physical
+    real_capture = _transaction._capture_physical
+    injected = False
+
+    def fail_second_commit(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if os.path.abspath(destination) == os.path.abspath(second):
+            raise OSError("injected second failure")
+        real_replace(source, destination, directory)
+
+    def replace_created_before_recovery_capture(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        nonlocal injected
+        if (
+            not injected
+            and os.path.abspath(source) == os.path.abspath(created)
+            and destination.endswith(".recovery")
+        ):
+            injected = True
+            write_source(created, "concurrent replacement\n")
+        real_capture(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
+    monkeypatch.setattr(
+        _transaction,
+        "_capture_physical",
+        replace_created_before_recovery_capture,
+    )
+
+    with pytest.raises(OSError, match="changed at recovery boundary"):
+        _transaction.write_changes(
+            [
+                make_change(created, None, "generated\n"),
+                make_change(second, "second-old\n", "second-new\n"),
+            ],
+            "creation recovery capture",
+        )
+
+    assert injected
+    assert created.read_text(encoding="utf-8") == "concurrent replacement\n"
+    assert Path(_transaction.active_journal_path()).is_file()
+    _transaction.clear_journal()
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX mode contract")
+def test_mode_repair_uses_private_rollback_and_restores_original_mode(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    secret = tmp_path / "private.key"
+    second = tmp_path / "config.json"
+    write_source(secret, "secret\n")
+    write_source(second, "old\n")
+    secret.chmod(0o644)
+    real_replace = _transaction._replace_physical
+    rollback_modes: list[int] = []
+
+    def inspect_then_fail_second(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if os.path.abspath(destination) == os.path.abspath(str(secret)):
+            rollback = next(tmp_path.glob(".private.key.*.rollback"))
+            rollback_modes.append(rollback.stat().st_mode & 0o777)
+        if os.path.abspath(destination) == os.path.abspath(str(second)):
+            raise OSError("injected second commit failure")
+        real_replace(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", inspect_then_fail_second)
+
+    with pytest.raises(OSError, match="injected second commit failure"):
+        _transaction.write_changes(
+            [
+                make_change(secret, "secret\n", "secret\n", enforce_mode=True),
+                make_change(second, "old\n", "new\n"),
+            ],
+            "mode repair",
+        )
+
+    assert rollback_modes
+    assert set(rollback_modes) == {0o600}
+    assert secret.read_text(encoding="utf-8") == "secret\n"
+    assert secret.stat().st_mode & 0o777 == 0o644
+    assert second.read_text(encoding="utf-8") == "old\n"
+    assert list(tmp_path.glob(".*.rollback")) == []
+
+
+@pytest.mark.skipif(os.name == "nt", reason="POSIX mode contract")
+def test_deletion_uses_private_rollback_and_restores_original_mode(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    removed = tmp_path / "removed.txt"
+    second = tmp_path / "second.txt"
+    write_source(removed, "remove me\n")
+    write_source(second, "old\n")
+    removed.chmod(0o644)
+    real_replace = _transaction._replace_physical
+    rollback_modes: list[int] = []
+
+    def inspect_then_fail_second(
+        source: str,
+        destination: str,
+        directory: _transaction.PinnedDirectory,
+    ) -> None:
+        if os.path.abspath(destination) == os.path.abspath(str(second)):
+            rollback = next(tmp_path.glob(".removed.txt.*.rollback"))
+            rollback_modes.append(rollback.stat().st_mode & 0o777)
+            raise OSError("injected second commit failure")
+        real_replace(source, destination, directory)
+
+    monkeypatch.setattr(_transaction, "_replace_physical", inspect_then_fail_second)
+
+    with pytest.raises(OSError, match="injected second commit failure"):
+        _transaction.write_changes(
+            [
+                make_change(removed, "remove me\n", None),
+                make_change(second, "old\n", "new\n"),
+            ],
+            "deletion rollback mode",
+        )
+
+    assert rollback_modes == [0o600]
+    assert removed.read_text(encoding="utf-8") == "remove me\n"
+    assert removed.stat().st_mode & 0o777 == 0o644
+    assert second.read_text(encoding="utf-8") == "old\n"
+    assert list(tmp_path.glob(".*.rollback")) == []

tests/test_transaction_security.py

@@ -10,31 +10,13 @@ import time
 
 import pytest
 
-from elydora.plugins import _transaction, _transaction_staging
-from elydora.plugins._managed_files import read_physical_directory, read_physical_file
-
-
-def _write(path: Path, source: str) -> None:
-    path.write_bytes(source.encode("utf-8"))
-
-
-def _change(
-    path: Path,
-    original: str | None,
-    next_source: str | None,
-    mode: int = 0o600,
-    enforce_mode: bool = False,
-) -> _transaction.FileChange:
-    change = _transaction.source_change(
-        str(path),
-        path.name,
-        original,
-        next_source,
-        mode,
-        enforce_mode=enforce_mode,
-    )
-    assert change is not None
-    return change
+from elydora.plugins import _transaction
+from elydora.plugins._managed_files import read_physical_file
+from transaction_support import (
+    make_change,
+    transaction_subprocess_environment,
+    write_source,
+)
 
 
 def test_post_replace_precondition_failure_restores_original_target(
@@ -43,8 +25,8 @@ def test_post_replace_precondition_failure_restores_original_target(
 ) -> None:
     target = tmp_path / "target.txt"
     provider = tmp_path / "provider.txt"
-    _write(target, "old\n")
-    _write(provider, "stable\n")
+    write_source(target, "old\n")
+    write_source(provider, "stable\n")
     provider_snapshot = read_physical_file(str(provider), "provider")
     real_replace = _transaction._replace_physical
 
@@ -55,7 +37,7 @@ def test_post_replace_precondition_failure_restores_original_target(
     ) -> None:
         real_replace(source, destination, directory)
         if os.path.abspath(destination) == os.path.abspath(str(target)):
-            _write(provider, "concurrent\n")
+            write_source(provider, "concurrent\n")
 
     monkeypatch.setattr(
         _transaction, "_replace_physical", replace_then_change_provider
@@ -63,7 +45,7 @@ def test_post_replace_precondition_failure_restores_original_target(
 
     with pytest.raises(OSError, match="provider changed during"):
         _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
+            [make_change(target, "old\n", "new\n")],
             "provider transaction",
             [_transaction.FilePrecondition(str(provider), "provider", provider_snapshot)],
         )
@@ -78,7 +60,7 @@ def test_commit_boundary_concurrent_write_is_restored_and_rejected(
     tmp_path: Path,
 ) -> None:
     target = tmp_path / "target.txt"
-    _write(target, "old\n")
+    write_source(target, "old\n")
     real_capture = _transaction._capture_physical
     changed = False
 
@@ -94,14 +76,14 @@ def test_commit_boundary_concurrent_write_is_restored_and_rejected(
             and destination.endswith(".rollback")
         ):
             changed = True
-            _write(target, "concurrent\n")
+            write_source(target, "concurrent\n")
         real_capture(source, destination, directory)
 
     monkeypatch.setattr(_transaction, "_capture_physical", write_before_capture)
 
     with pytest.raises(OSError, match="changed at commit boundary"):
         _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
+            [make_change(target, "old\n", "new\n")],
             "commit boundary",
         )
 
@@ -116,7 +98,7 @@ def test_existing_target_remains_visible_during_atomic_update(
     tmp_path: Path,
 ) -> None:
     target = tmp_path / "target.txt"
-    _write(target, "old\n")
+    write_source(target, "old\n")
     replace_started = threading.Event()
     release_replace = threading.Event()
     failures: list[BaseException] = []
@@ -135,7 +117,7 @@ def test_existing_target_remains_visible_during_atomic_update(
     def update() -> None:
         try:
             _transaction.write_changes(
-                [_change(target, "old\n", "new\n")],
+                [make_change(target, "old\n", "new\n")],
                 "visible atomic update",
             )
         except BaseException as error:
@@ -156,13 +138,6 @@ def test_existing_target_remains_visible_during_atomic_update(
     assert target.read_text(encoding="utf-8") == "new\n"
 
 
-def _transaction_subprocess_environment(home: Path) -> dict[str, str]:
-    environment = os.environ.copy()
-    environment["HOME"] = str(home)
-    environment["USERPROFILE"] = str(home)
-    return environment
-
-
 def test_process_exit_after_atomic_replace_recovers_on_restart(
     monkeypatch: pytest.MonkeyPatch,
     tmp_path: Path,
@@ -170,7 +145,7 @@ def test_process_exit_after_atomic_replace_recovers_on_restart(
     home = tmp_path / "home"
     home.mkdir()
     target = tmp_path / "target.txt"
-    _write(target, "old\n")
+    write_source(target, "old\n")
     monkeypatch.setenv("HOME", str(home))
     monkeypatch.setenv("USERPROFILE", str(home))
     script = """
@@ -193,7 +168,7 @@ _transaction.write_changes([change], "crash recovery")
     completed = subprocess.run(
         [sys.executable, "-c", script, str(target)],
         cwd=Path(__file__).resolve().parents[1],
-        env=_transaction_subprocess_environment(home),
+        env=transaction_subprocess_environment(home),
         check=False,
     )
 
@@ -212,7 +187,7 @@ def test_process_exit_after_committed_marker_keeps_atomic_update(
     home = tmp_path / "home"
     home.mkdir()
     target = tmp_path / "target.txt"
-    _write(target, "old\n")
+    write_source(target, "old\n")
     monkeypatch.setenv("HOME", str(home))
     monkeypatch.setenv("USERPROFILE", str(home))
     script = """
@@ -230,7 +205,7 @@ _transaction.write_changes([change], "committed crash recovery")
     completed = subprocess.run(
         [sys.executable, "-c", script, str(target)],
         cwd=Path(__file__).resolve().parents[1],
-        env=_transaction_subprocess_environment(home),
+        env=transaction_subprocess_environment(home),
         check=False,
     )
 
@@ -250,8 +225,8 @@ def test_process_exit_mid_transaction_restores_all_targets(
     home.mkdir()
     first = tmp_path / "first.txt"
     second = tmp_path / "second.txt"
-    _write(first, "first-old\n")
-    _write(second, "second-old\n")
+    write_source(first, "first-old\n")
+    write_source(second, "second-old\n")
     monkeypatch.setenv("HOME", str(home))
     monkeypatch.setenv("USERPROFILE", str(home))
     script = """
@@ -281,7 +256,7 @@ _transaction.write_changes(changes, "multi-file crash recovery")
     completed = subprocess.run(
         [sys.executable, "-c", script, str(first), str(second)],
         cwd=Path(__file__).resolve().parents[1],
-        env=_transaction_subprocess_environment(home),
+        env=transaction_subprocess_environment(home),
         check=False,
     )
 
@@ -313,7 +288,7 @@ def test_process_exit_recovers_atomic_create_and_remove(
     home.mkdir()
     target = tmp_path / "target.txt"
     if original is not None:
-        _write(target, original)
+        write_source(target, original)
     monkeypatch.setenv("HOME", str(home))
     monkeypatch.setenv("USERPROFILE", str(home))
     script = """
@@ -343,7 +318,7 @@ _transaction.write_changes([change], "create-remove crash recovery")
             str(exit_code),
         ],
         cwd=Path(__file__).resolve().parents[1],
-        env=_transaction_subprocess_environment(home),
+        env=transaction_subprocess_environment(home),
         check=False,
     )
 
@@ -366,8 +341,8 @@ def test_cross_process_writers_are_serialized(
     ready = tmp_path / "ready"
     second_ready = tmp_path / "second-ready"
     release = tmp_path / "release"
-    _write(target, "old\n")
-    environment = _transaction_subprocess_environment(home)
+    write_source(target, "old\n")
+    environment = transaction_subprocess_environment(home)
     first_script = """
 import pathlib
 import sys
@@ -443,632 +418,3 @@ except OSError as error:
     assert second.returncode == 19, output
     assert "changed during" in output
     assert target.read_text(encoding="utf-8") == "first\n"
-
-
-def test_final_replace_exception_after_success_restores_original(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    _write(target, "old\n")
-    real_replace = _transaction._replace_physical
-
-    def replace_then_raise(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        real_replace(source, destination, directory)
-        if os.path.abspath(destination) == os.path.abspath(str(target)):
-            raise OSError("injected post-replace failure")
-
-    monkeypatch.setattr(_transaction, "_replace_physical", replace_then_raise)
-
-    with pytest.raises(OSError, match="injected post-replace failure"):
-        _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
-            "post-replace failure",
-        )
-
-    assert target.read_text(encoding="utf-8") == "old\n"
-    assert list(tmp_path.glob(".*.rollback")) == []
-
-
-def test_capture_exception_after_success_restores_original(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    _write(target, "old\n")
-    real_capture = _transaction._capture_physical
-
-    def capture_then_raise(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        real_capture(source, destination, directory)
-        raise OSError("injected post-capture failure")
-
-    monkeypatch.setattr(_transaction, "_capture_physical", capture_then_raise)
-
-    with pytest.raises(OSError, match="injected post-capture failure"):
-        _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
-            "post-capture failure",
-        )
-
-    assert target.read_text(encoding="utf-8") == "old\n"
-    assert list(tmp_path.glob(".*.rollback")) == []
-
-
-def test_rollback_reservation_collision_preserves_victim_and_original(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    _write(target, "old\n")
-    victim = "concurrent rollback destination\n"
-    collision_path: Path | None = None
-
-    def collide_with_rollback_destination(
-        _source: str,
-        destination: str,
-        _directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal collision_path
-        if destination.endswith(".rollback"):
-            collision_path = Path(destination)
-            _write(collision_path, victim)
-
-    monkeypatch.setattr(
-        _transaction,
-        "_capture_physical",
-        collide_with_rollback_destination,
-    )
-
-    with pytest.raises(OSError, match="exist"):
-        _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
-            "rollback destination collision",
-        )
-
-    assert collision_path is not None
-    assert target.read_text(encoding="utf-8") == "old\n"
-    assert collision_path.read_text(encoding="utf-8") == victim
-
-
-def test_final_install_does_not_overwrite_concurrent_target(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    _write(target, "old\n")
-    real_replace = _transaction._replace_physical
-    injected = False
-
-    def create_target_before_install(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal injected
-        if not injected and os.path.abspath(destination) == os.path.abspath(target):
-            injected = True
-            _write(target, "concurrent\n")
-        real_replace(source, destination, directory)
-
-    monkeypatch.setattr(
-        _transaction,
-        "_replace_physical",
-        create_target_before_install,
-    )
-
-    with pytest.raises(OSError, match="original content preserved"):
-        _transaction.write_changes(
-            [_change(target, "old\n", "new\n")],
-            "no-clobber install",
-        )
-
-    assert injected
-    assert target.read_text(encoding="utf-8") == "concurrent\n"
-    rollbacks = list(tmp_path.glob(".*.rollback"))
-    assert len(rollbacks) == 1
-    assert rollbacks[0].read_text(encoding="utf-8") == "old\n"
-
-
-def test_restore_does_not_overwrite_concurrent_target(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    second = tmp_path / "second.txt"
-    _write(target, "old\n")
-    _write(second, "second-old\n")
-    real_replace = _transaction._replace_physical
-    real_restore = _transaction._restore_physical
-    injected = False
-
-    def fail_second_commit(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        if os.path.abspath(destination) == os.path.abspath(second):
-            raise OSError("injected second failure")
-        real_replace(source, destination, directory)
-
-    def create_target_before_restore(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal injected
-        if not injected and os.path.abspath(destination) == os.path.abspath(target):
-            injected = True
-            _write(target, "concurrent recovery\n")
-        real_restore(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
-    monkeypatch.setattr(
-        _transaction,
-        "_restore_physical",
-        create_target_before_restore,
-    )
-
-    with pytest.raises(OSError, match="original content preserved"):
-        _transaction.write_changes(
-            [
-                _change(target, "old\n", "new\n"),
-                _change(second, "second-old\n", "second-new\n"),
-            ],
-            "no-clobber restoration",
-        )
-
-    assert injected
-    assert target.read_text(encoding="utf-8") == "concurrent recovery\n"
-    rollbacks = list(tmp_path.glob(".*.rollback"))
-    assert len(rollbacks) == 1
-    assert rollbacks[0].read_text(encoding="utf-8") == "old\n"
-    assert Path(_transaction.active_journal_path()).is_file()
-    _transaction.clear_journal()
-
-
-def test_restore_source_replacement_reports_existing_preserved_path(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    target = tmp_path / "target.txt"
-    second = tmp_path / "second.txt"
-    displaced = tmp_path / "displaced-original.txt"
-    _write(target, "old\n")
-    _write(second, "second-old\n")
-    real_replace = _transaction._replace_physical
-    real_restore = _transaction._restore_physical
-    rollback_path: Path | None = None
-
-    def fail_second_commit(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        if os.path.abspath(destination) == os.path.abspath(second):
-            raise OSError("injected second failure")
-        real_replace(source, destination, directory)
-
-    def replace_restore_source(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal rollback_path
-        if (
-            rollback_path is None
-            and source.endswith(".rollback")
-            and os.path.abspath(destination) == os.path.abspath(target)
-        ):
-            rollback_path = Path(source)
-            rollback_path.rename(displaced)
-            _write(rollback_path, "concurrent recovery source\n")
-        real_restore(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
-    monkeypatch.setattr(_transaction, "_restore_physical", replace_restore_source)
-
-    with pytest.raises(OSError, match="recovery source changed") as raised:
-        _transaction.write_changes(
-            [
-                _change(target, "old\n", "new\n"),
-                _change(second, "second-old\n", "second-new\n"),
-            ],
-            "restore source replacement",
-        )
-
-    assert rollback_path is not None
-    assert f"concurrent data preserved at {rollback_path}" in str(raised.value)
-    assert rollback_path.read_text(encoding="utf-8") == "concurrent recovery source\n"
-    assert displaced.read_text(encoding="utf-8") == "old\n"
-    assert target.read_text(encoding="utf-8") == "new\n"
-    assert second.read_text(encoding="utf-8") == "second-old\n"
-    assert Path(_transaction.active_journal_path()).is_file()
-    _transaction.clear_journal()
-
-
-def test_creation_rollback_captures_and_preserves_concurrent_replacement(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    created = tmp_path / "created.txt"
-    second = tmp_path / "second.txt"
-    _write(second, "second-old\n")
-    real_replace = _transaction._replace_physical
-    real_capture = _transaction._capture_physical
-    injected = False
-
-    def fail_second_commit(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        if os.path.abspath(destination) == os.path.abspath(second):
-            raise OSError("injected second failure")
-        real_replace(source, destination, directory)
-
-    def replace_created_before_recovery_capture(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal injected
-        if (
-            not injected
-            and os.path.abspath(source) == os.path.abspath(created)
-            and destination.endswith(".recovery")
-        ):
-            injected = True
-            _write(created, "concurrent replacement\n")
-        real_capture(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_second_commit)
-    monkeypatch.setattr(
-        _transaction,
-        "_capture_physical",
-        replace_created_before_recovery_capture,
-    )
-
-    with pytest.raises(OSError, match="changed at recovery boundary"):
-        _transaction.write_changes(
-            [
-                _change(created, None, "generated\n"),
-                _change(second, "second-old\n", "second-new\n"),
-            ],
-            "creation recovery capture",
-        )
-
-    assert injected
-    assert created.read_text(encoding="utf-8") == "concurrent replacement\n"
-    assert Path(_transaction.active_journal_path()).is_file()
-    _transaction.clear_journal()
-
-
-@pytest.mark.skipif(os.name == "nt", reason="POSIX mode contract")
-def test_mode_repair_uses_private_rollback_and_restores_original_mode(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    secret = tmp_path / "private.key"
-    second = tmp_path / "config.json"
-    _write(secret, "secret\n")
-    _write(second, "old\n")
-    secret.chmod(0o644)
-    real_replace = _transaction._replace_physical
-    rollback_modes: list[int] = []
-
-    def inspect_then_fail_second(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        if os.path.abspath(destination) == os.path.abspath(str(secret)):
-            rollback = next(tmp_path.glob(".private.key.*.rollback"))
-            rollback_modes.append(rollback.stat().st_mode & 0o777)
-        if os.path.abspath(destination) == os.path.abspath(str(second)):
-            raise OSError("injected second commit failure")
-        real_replace(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", inspect_then_fail_second)
-
-    with pytest.raises(OSError, match="injected second commit failure"):
-        _transaction.write_changes(
-            [
-                _change(secret, "secret\n", "secret\n", enforce_mode=True),
-                _change(second, "old\n", "new\n"),
-            ],
-            "mode repair",
-        )
-
-    assert rollback_modes
-    assert set(rollback_modes) == {0o600}
-    assert secret.read_text(encoding="utf-8") == "secret\n"
-    assert secret.stat().st_mode & 0o777 == 0o644
-    assert second.read_text(encoding="utf-8") == "old\n"
-    assert list(tmp_path.glob(".*.rollback")) == []
-
-
-@pytest.mark.skipif(os.name == "nt", reason="POSIX mode contract")
-def test_deletion_uses_private_rollback_and_restores_original_mode(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    removed = tmp_path / "removed.txt"
-    second = tmp_path / "second.txt"
-    _write(removed, "remove me\n")
-    _write(second, "old\n")
-    removed.chmod(0o644)
-    real_replace = _transaction._replace_physical
-    rollback_modes: list[int] = []
-
-    def inspect_then_fail_second(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        if os.path.abspath(destination) == os.path.abspath(str(second)):
-            rollback = next(tmp_path.glob(".removed.txt.*.rollback"))
-            rollback_modes.append(rollback.stat().st_mode & 0o777)
-            raise OSError("injected second commit failure")
-        real_replace(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", inspect_then_fail_second)
-
-    with pytest.raises(OSError, match="injected second commit failure"):
-        _transaction.write_changes(
-            [
-                _change(removed, "remove me\n", None),
-                _change(second, "old\n", "new\n"),
-            ],
-            "deletion rollback mode",
-        )
-
-    assert rollback_modes == [0o600]
-    assert removed.read_text(encoding="utf-8") == "remove me\n"
-    assert removed.stat().st_mode & 0o777 == 0o644
-    assert second.read_text(encoding="utf-8") == "old\n"
-    assert list(tmp_path.glob(".*.rollback")) == []
-
-
-def _swap_directory(parent: Path, backup: Path, redirected: Path) -> None:
-    parent.rename(backup)
-    redirected.rename(parent)
-
-
-@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
-def test_staging_directory_swap_never_writes_secret_to_redirected_path(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    parent = tmp_path / "runtime"
-    backup = tmp_path / "runtime-original"
-    redirected = tmp_path / "runtime-redirected"
-    parent.mkdir()
-    redirected.mkdir()
-    target = parent / "private.key"
-    real_write = _transaction_staging.write_staged
-    swapped = False
-
-    def swap_then_stage(*args: object, **kwargs: object):
-        nonlocal swapped
-        if not swapped:
-            swapped = True
-            _swap_directory(parent, backup, redirected)
-        return real_write(*args, **kwargs)
-
-    monkeypatch.setattr(_transaction_staging, "write_staged", swap_then_stage)
-
-    with pytest.raises(OSError, match="changed during transaction"):
-        _transaction.write_changes(
-            [_change(target, None, "secret\n")],
-            "staging swap",
-        )
-
-    assert not (parent / "private.key").exists()
-    assert not (backup / "private.key").exists()
-    assert list(parent.iterdir()) == []
-    assert list(backup.iterdir()) == []
-
-
-@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
-def test_commit_directory_swap_rolls_back_inside_pinned_directory(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    parent = tmp_path / "runtime"
-    backup = tmp_path / "runtime-original"
-    redirected = tmp_path / "runtime-redirected"
-    parent.mkdir()
-    redirected.mkdir()
-    target = parent / "private.key"
-    real_replace = _transaction._replace_physical
-    swapped = False
-
-    def swap_then_replace(
-        source: str,
-        destination: str,
-        directory: _transaction.PinnedDirectory,
-    ) -> None:
-        nonlocal swapped
-        if not swapped:
-            swapped = True
-            _swap_directory(parent, backup, redirected)
-        real_replace(source, destination, directory)
-
-    monkeypatch.setattr(_transaction, "_replace_physical", swap_then_replace)
-
-    with pytest.raises(OSError, match="changed during transaction"):
-        _transaction.write_changes(
-            [_change(target, None, "secret\n")],
-            "commit swap",
-        )
-
-    assert not (parent / "private.key").exists()
-    assert not (backup / "private.key").exists()
-    assert list(parent.iterdir()) == []
-    assert list(backup.iterdir()) == []
-
-
-def test_failed_transaction_removes_only_created_empty_directories(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    kiro = tmp_path / ".kiro"
-    hooks = kiro / "hooks"
-    hooks.mkdir(parents=True)
-    kiro_snapshot = read_physical_directory(str(kiro), "Kiro directory")
-    hooks_snapshot = read_physical_directory(str(hooks), "hooks directory")
-    target = hooks / "elydora-audit.json"
-
-    def fail_replace(
-        _source: str,
-        _destination: str,
-        _directory: _transaction.PinnedDirectory,
-    ) -> None:
-        raise OSError("injected commit failure")
-
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
-
-    with pytest.raises(OSError, match="injected commit failure"):
-        _transaction.write_changes(
-            [_change(target, None, "{}\n")],
-            "created directory recovery",
-            directory_preconditions=[
-                _transaction.DirectoryPrecondition(
-                    str(kiro), "Kiro directory", kiro_snapshot, created=True
-                ),
-                _transaction.DirectoryPrecondition(
-                    str(hooks), "hooks directory", hooks_snapshot, created=True
-                ),
-            ],
-        )
-
-    assert not hooks.exists()
-    assert not kiro.exists()
-
-
-def test_created_directory_recovery_keeps_parent_and_child_pinned(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    kiro = tmp_path / ".kiro"
-    hooks = kiro / "hooks"
-    hooks.mkdir(parents=True)
-    kiro_snapshot = read_physical_directory(str(kiro), "Kiro directory")
-    hooks_snapshot = read_physical_directory(str(hooks), "hooks directory")
-    target = hooks / "elydora-audit.json"
-    observed: list[tuple[Path, Path]] = []
-    real_remove = _transaction_staging.remove_pinned_empty_directory
-
-    def observe_pins(
-        parent: object,
-        child: object,
-        *,
-        require_empty: bool = True,
-    ) -> None:
-        assert isinstance(parent, _transaction.PinnedDirectory)
-        assert isinstance(child, _transaction.PinnedDirectory)
-        assert parent.descriptor is not None
-        assert child.descriptor is not None
-        assert os.fstat(child.descriptor).st_ino == child.snapshot.inode
-        observed.append((Path(parent.path), Path(child.path)))
-        real_remove(parent, child, require_empty=require_empty)
-
-    def fail_replace(
-        _source: str,
-        _destination: str,
-        _directory: _transaction.PinnedDirectory,
-    ) -> None:
-        raise OSError("injected pinned cleanup failure")
-
-    monkeypatch.setattr(
-        _transaction_staging,
-        "remove_pinned_empty_directory",
-        observe_pins,
-    )
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
-
-    with pytest.raises(OSError, match="injected pinned cleanup failure"):
-        _transaction.write_changes(
-            [_change(target, None, "{}\n")],
-            "pinned directory recovery",
-            directory_preconditions=[
-                _transaction.DirectoryPrecondition(
-                    str(kiro), "Kiro directory", kiro_snapshot, created=True
-                ),
-                _transaction.DirectoryPrecondition(
-                    str(hooks), "hooks directory", hooks_snapshot, created=True
-                ),
-            ],
-        )
-
-    expected = [(kiro, hooks), (tmp_path, kiro)]
-    assert observed == expected
-    assert not kiro.exists()
-
-
-@pytest.mark.skipif(os.name == "nt", reason="Windows handle blocks directory rename")
-def test_created_directory_recovery_preserves_swapped_directory(
-    monkeypatch: pytest.MonkeyPatch,
-    tmp_path: Path,
-) -> None:
-    created = tmp_path / "created"
-    created.mkdir()
-    created_snapshot = read_physical_directory(str(created), "created directory")
-    target = created / "managed.json"
-    replacement = tmp_path / "replacement"
-    replacement.mkdir()
-    marker = replacement / "user-owned"
-    marker.write_text("preserve", encoding="utf-8")
-    original = tmp_path / "created-original"
-    real_remove = _transaction_staging.remove_pinned_empty_directory
-
-    def swap_before_removal(
-        parent: _transaction.PinnedDirectory,
-        child: _transaction.PinnedDirectory,
-        *,
-        require_empty: bool = True,
-    ) -> None:
-        created.rename(original)
-        replacement.rename(created)
-        real_remove(parent, child, require_empty=require_empty)
-
-    def fail_replace(
-        _source: str,
-        _destination: str,
-        _directory: _transaction.PinnedDirectory,
-    ) -> None:
-        raise OSError("injected swap cleanup failure")
-
-    monkeypatch.setattr(
-        _transaction_staging,
-        "remove_pinned_empty_directory",
-        swap_before_removal,
-    )
-    monkeypatch.setattr(_transaction, "_replace_physical", fail_replace)
-
-    with pytest.raises(OSError, match="recovery failed"):
-        _transaction.write_changes(
-            [_change(target, None, "{}\n")],
-            "swapped directory recovery",
-            directory_preconditions=[
-                _transaction.DirectoryPrecondition(
-                    str(created),
-                    "created directory",
-                    created_snapshot,
-                    created=True,
-                )
-            ],
-        )
-
-    assert (created / marker.name).read_text(encoding="utf-8") == "preserve"
-    assert original.is_dir()
-    assert Path(_transaction.active_journal_path()).is_file()
-    _transaction.clear_journal()

tests/transaction_support.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+
+from elydora.plugins import _transaction
+
+
+def write_source(path: Path, source: str) -> None:
+    path.write_bytes(source.encode("utf-8"))
+
+
+def make_change(
+    path: Path,
+    original: str | None,
+    next_source: str | None,
+    mode: int = 0o600,
+    enforce_mode: bool = False,
+) -> _transaction.FileChange:
+    change = _transaction.source_change(
+        str(path),
+        path.name,
+        original,
+        next_source,
+        mode,
+        enforce_mode=enforce_mode,
+    )
+    assert change is not None
+    return change
+
+
+def transaction_subprocess_environment(home: Path) -> dict[str, str]:
+    environment = os.environ.copy()
+    environment["HOME"] = str(home)
+    environment["USERPROFILE"] = str(home)
+    return environment
+
+
+def swap_directory(parent: Path, backup: Path, redirected: Path) -> None:
+    parent.rename(backup)
+    redirected.rename(parent)