Claude Code: Fix import path resolution in error_handlers.py

- Add sys.path setup at module level for agents imports
- Simplify handle_brain_response to not rely on openclaw import order
- Ensures 'from agents import brain_minimal' works regardless of when openclaw is imported

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

error_handlers.py

@@ -5,12 +5,24 @@ Provides specific exception handlers for common operations.
 """
 import json
 import os
+import sys
 from datetime import datetime
 from pathlib import Path
 from typing import Dict, Any, Optional
 from fastapi import HTTPException, Request
 from fastapi.responses import JSONResponse
 
+# CRITICAL: Set up sys.path for agents imports at module load time
+# This ensures `from agents import brain_minimal` works regardless of import order
+_openclaw_package_dir = Path(__file__).parent / "openclaw"
+_openclaw_internal_dir = _openclaw_package_dir / ".openclaw"
+
+# Add openclaw parent dir and .openclaw to sys.path for agents imports
+if str(_openclaw_package_dir) not in sys.path:
+    sys.path.insert(0, str(_openclaw_package_dir))
+if str(_openclaw_internal_dir) not in sys.path:
+    sys.path.insert(0, str(_openclaw_internal_dir))
+
 
 async def http_exception_handler(request: Request, exc: HTTPException) -> JSONResponse:
     """
@@ -146,9 +158,8 @@ def handle_brain_response(message: str) -> str:
         AttributeError: If required brain methods are missing.
     """
     try:
-        # Import openclaw first - it sets up sys.path to include .openclaw
-        # Then we can import agents directly (same pattern as app.py)
-        import openclaw
+        # sys.path is already set up at module level (see top of file)
+        # Import agents directly - no need to import openclaw first
         from agents import brain_minimal
 
         # Verify brain has required method before calling