Claude Code: fix import path for brain_minimal module

The import path `openclaw.agents.brain_minimal` was incorrect because
the actual package structure has agents in `openclaw/.openclaw/agents/`.

Changed to `from agents.brain_minimal import BrainMinimal` which works
correctly after openclaw/__init__.py adds .openclaw to sys.path.

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

app.py

@@ -75,7 +75,7 @@ async def startup_event():
 
     # Check brain_minimal
     try:
-        from openclaw.agents.brain_minimal import BrainMinimal
+        from agents.brain_minimal import BrainMinimal
         logger.info(">>> STARTUP: brain_minimal module imported successfully")
     except ImportError as e:
         logger.warning(f">>> STARTUP: brain_minimal import failed: {e}")
@@ -123,7 +123,7 @@ async def health():
 
     # 2. Check brain import (graceful - don't crash if import fails)
     try:
-        from openclaw.agents.brain_minimal import BrainMinimal
+        from agents.brain_minimal import BrainMinimal
         brain = BrainMinimal(agent_name="cain", legacy_mode=True)
         checks["brain"] = "ok"
     except ImportError:

error_handlers.py

@@ -112,7 +112,7 @@ def handle_brain_response(message: str) -> str:
         AttributeError: If required brain methods are missing.
     """
     try:
-        from openclaw.agents.brain_minimal import BrainMinimal
+        from agents.brain_minimal import BrainMinimal
 
         brain = BrainMinimal(agent_name="cain", legacy_mode=True)
         result = brain._conversation_process(message)