Claude Code: Fix STATUS_FILE path resolution - use dynamic multi-strategy lookup

- Replace hardcoded path assumption with dynamic _find_status_file() function
- Add 4 fallback strategies: env var, relative path, adjacent dir, default
- Works both locally (/tmp/claude-workspace) and in Docker (/app)
- Supports CAIN_STATUS_FILE environment variable override

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

error_handlers.py

@@ -58,8 +58,33 @@ async def generic_exception_handler(request: Request, exc: Exception) -> JSONRes
 
 
 # Configuration path - cain_status.json location
-# Uses absolute path based on this file's location (works both locally and in container)
-STATUS_FILE = Path(__file__).parent / "openclaw" / ".openclaw" / "agents" / "cain_status.json"
+# Uses dynamic path resolution that works both locally and in Docker container
+# Tries multiple strategies to find the status file
+def _find_status_file() -> Path:
+    """Dynamically locate cain_status.json using multiple fallback strategies."""
+    # Strategy 1: Use environment variable if set (highest priority)
+    env_path = os.environ.get("CAIN_STATUS_FILE")
+    if env_path:
+        return Path(env_path)
+
+    # Strategy 2: Relative to this file's parent directory
+    # In workspace: error_handlers.py -> openclaw/.openclaw/agents/
+    # In Docker: /app/error_handlers.py -> /app/openclaw/.openclaw/agents/
+    base_dir = Path(__file__).parent.resolve()
+    relative_path = base_dir / "openclaw" / ".openclaw" / "agents" / "cain_status.json"
+    if relative_path.exists():
+        return relative_path
+
+    # Strategy 3: Check if we're in the openclaw directory already
+    # Handles cases where error_handlers.py might be in openclaw/
+    agents_dir = base_dir / ".openclaw" / "agents" / "cain_status.json"
+    if agents_dir.exists():
+        return agents_dir
+
+    # Strategy 4: Fall back to the expected path (may not exist, but that's OK)
+    return relative_path
+
+STATUS_FILE = _find_status_file()
 
 
 def handle_status_file_read() -> Dict[str, Any]: