chore(python): audit providers kimi grok qwen letta

Move the four providers onto _runtime and _shell_command; expected
runtime scripts take the runtime config; add unique_preconditions.

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

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)