Claude Code: Fix Docker path resolution - support nested openclaw structure

- Dynamic path resolution with fallbacks for /app/.openclaw vs /app/openclaw/.openclaw
- Update sys.path setup in error_handlers.py to probe multiple locations
- Fix hardcoded brain_status_path in app.py
- Update _resolve_status_file to check nested structure

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

app.py

@@ -429,8 +429,20 @@ try:
     print(f">>> CAIN: Status file updated at {status_path}: stage=RUNNING_A2A_READY", flush=True)
 
     # Also write to brain_minimal's status file location for consistency
-    brain_status_path = Path("/app/.openclaw/agents/cain_status.json")
-    if brain_status_path.parent.exists():
+    # Try multiple possible locations with fallback
+    _script_dir = Path(os.path.abspath(os.path.dirname(__file__)))
+    _possible_status_paths = [
+        Path("/app/.openclaw/agents/cain_status.json"),         # Legacy flat structure
+        Path("/app/openclaw/.openclaw/agents/cain_status.json"), # Nested structure
+        _script_dir / ".openclaw" / "agents" / "cain_status.json",
+        _script_dir / "openclaw" / ".openclaw" / "agents" / "cain_status.json",
+    ]
+    brain_status_path = None
+    for p in _possible_status_paths:
+        if p.parent.exists():
+            brain_status_path = p
+            break
+    if brain_status_path:
         with open(brain_status_path, 'w') as f:
             json.dump(status_data, f, indent=2)
         print(f">>> CAIN: Brain status file also updated at {brain_status_path}", flush=True)

error_handlers.py

@@ -14,12 +14,19 @@ 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
-# Note: Docker WORKDIR is /app, .openclaw is at /app/.openclaw
-_openclaw_base_dir = Path(__file__).parent  # /app
-_openclaw_internal_dir = Path(__file__).parent / ".openclaw"  # /app/.openclaw
-
-# Add /app and /app/.openclaw to sys.path for agents imports
-for path_dir in [_openclaw_base_dir, _openclaw_internal_dir]:
+# Dynamic path resolution with fallbacks for different Docker contexts
+_script_dir = Path(os.path.abspath(os.path.dirname(__file__)))  # Absolute path of this script
+
+# Try multiple possible locations for .openclaw directory
+_possible_openclaw_paths = [
+    _script_dir / ".openclaw",           # /app/.openclaw (legacy/flat structure)
+    _script_dir / "openclaw" / ".openclaw",  # /app/openclaw/.openclaw (nested structure)
+    Path("/app/openclaw/.openclaw"),     # Absolute Docker path (nested)
+    Path("/app/.openclaw"),              # Absolute Docker path (flat)
+]
+
+# Add all valid paths to sys.path
+for path_dir in _possible_openclaw_paths:
     path_str = str(path_dir)
     if path_str not in sys.path and path_dir.exists():
         sys.path.insert(0, path_str)
@@ -111,10 +118,17 @@ def _resolve_status_file() -> Path:
     if data_path.exists():
         return data_path
 
-    # Priority 5: /app/.openclaw/agents/cain_status.json (actual location)
-    openclaw_status = Path(__file__).parent / ".openclaw" / "agents" / "cain_status.json"
-    if openclaw_status.exists():
-        return openclaw_status
+    # Priority 5: /app/.openclaw/agents/cain_status.json OR /app/openclaw/.openclaw/agents/cain_status.json
+    _script_dir = Path(os.path.abspath(os.path.dirname(__file__)))
+    _possible_status_paths = [
+        Path("/app/.openclaw/agents/cain_status.json"),         # Flat structure
+        Path("/app/openclaw/.openclaw/agents/cain_status.json"), # Nested structure
+        _script_dir / ".openclaw" / "agents" / "cain_status.json",
+        _script_dir / "openclaw" / ".openclaw" / "agents" / "cain_status.json",
+    ]
+    for openclaw_status in _possible_status_paths:
+        if openclaw_status.exists():
+            return openclaw_status
 
     # Priority 6: /app/cain_status.json (legacy location)
     app_path = Path("/app/cain_status.json")