Migrate to per-agent subdirectories, uniform 8-agent support, cross-platform fixes

- All paths use ~/.elydora/{agentId}/ per-agent isolation
- Add copilot, letta plugins; split kiro into kirocli + kiroide
- Remove augment (SDK-only agent, not one-click)
- Fix guard command: use sys.executable instead of hardcoded python3
- Fix chmod wrapped in try/except for Windows compatibility
- Fix OpenCode chain state: save after HTTP 2xx response
- Fix guard script shebang consistency (sys.executable)
- Uniform 8 agents: claudecode, cursor, gemini, kirocli, kiroide, opencode, copilot, letta

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

elydora/plugins/hook_template.py

@@ -27,7 +27,7 @@ def generate_hook_script(
       4. POSTs it fire-and-forget to the Elydora API
       5. Always exits 0 (never blocks the host agent)
 
-    Chain state is persisted in ~/.elydora/chain-state.json.
+    Chain state is persisted in ~/.elydora/{agent_id}/chain-state.json.
     """
     shebang = sys.executable
     return f'''#!{shebang}
@@ -51,8 +51,9 @@ PRIVATE_KEY = {private_key!r}
 KID = {kid!r}
 BASE_URL = {base_url!r}
 
-CHAIN_STATE_PATH = os.path.join(os.path.expanduser("~"), ".elydora", "chain-state.json")
-ERROR_LOG_PATH = os.path.join(os.path.expanduser("~"), ".elydora", "error.log")
+ELYDORA_DIR = os.path.join(os.path.expanduser("~"), ".elydora")
+CHAIN_STATE_PATH = os.path.join(ELYDORA_DIR, AGENT_ID, "chain-state.json")
+ERROR_LOG_PATH = os.path.join(ELYDORA_DIR, AGENT_ID, "error.log")
 ZERO_CHAIN_HASH = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
 
 # ---------------------------------------------------------------------------
@@ -289,18 +290,19 @@ if __name__ == "__main__":
 '''
 
 
-def generate_guard_script(agent_name: str) -> str:
+def generate_guard_script(agent_name: str, agent_id: str) -> str:
     """Return a self-contained Python guard script for PreToolUse freeze enforcement.
 
     The script:
-      1. Reads agent config from ~/.elydora/agents/{agent_name}.json
-      2. Checks cached status from ~/.elydora/agents/{agent_name}.status.json (60s TTL)
+      1. Reads agent config from ~/.elydora/{agent_id}/config.json
+      2. Checks cached status from ~/.elydora/{agent_id}/status-cache.json (60s TTL)
       3. If cache is stale, fetches agent status from GET {base_url}/v1/agents/{agent_id}
       4. If status is "frozen", writes error to stderr and exits with code 1 (blocks tool)
       5. Fail-open: if API unreachable or config missing, exits 0 (allow)
       6. Uses only stdlib — no external deps
     """
-    return f'''#!/usr/bin/env python3
+    shebang = sys.executable
+    return f'''#!{shebang}
 """Elydora agent guard (PreToolUse) for: {agent_name}
 Generated by elydora-sdk — DO NOT EDIT."""
 
@@ -310,9 +312,10 @@ import sys
 import time
 
 AGENT_NAME = {agent_name!r}
+AGENT_ID = {agent_id!r}
 ELYDORA_DIR = os.path.join(os.path.expanduser("~"), ".elydora")
-CONFIG_PATH = os.path.join(ELYDORA_DIR, "agents", AGENT_NAME + ".json")
-STATUS_CACHE_PATH = os.path.join(ELYDORA_DIR, "agents", AGENT_NAME + ".status.json")
+CONFIG_PATH = os.path.join(ELYDORA_DIR, AGENT_ID, "config.json")
+STATUS_CACHE_PATH = os.path.join(ELYDORA_DIR, AGENT_ID, "status-cache.json")
 CACHE_TTL_S = 60  # 60 seconds
 
 # Consume stdin so the parent process doesn't block on a full pipe