Claude Code: Fix Cain error field handling - clear stale 'unknown' at startup

- Update entrypoint.sh to clean ALL status file locations (not just /data)
- Update app.py to write consistent status to all possible locations
- Prevents 'unknown' errors from persisting across container restarts

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

app.py

@@ -454,7 +454,7 @@ 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
-    # Try multiple possible locations with fallback
+    # CRITICAL: Write to ALL possible locations to ensure "unknown" errors are cleared everywhere
     _script_dir = Path(os.path.abspath(os.path.dirname(__file__)))
     _possible_status_paths = [
         Path("/app/openclaw/.openclaw/agents/cain_status.json"), # Nested structure (Docker)
@@ -462,22 +462,38 @@ try:
         _script_dir / "openclaw" / ".openclaw" / "agents" / "cain_status.json",
         _script_dir / ".openclaw" / "agents" / "cain_status.json",
     ]
-    brain_status_path = None
     for p in _possible_status_paths:
-        # Create parent directory if it doesn't exist
         try:
+            # Create parent directory if it doesn't exist
             p.parent.mkdir(parents=True, exist_ok=True)
-            brain_status_path = p
-            break
-        except Exception:
-            continue
-    if brain_status_path:
-        try:
-            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)
+            # Check if file exists and has stale "unknown" error - clean it
+            if p.exists():
+                try:
+                    with open(p, 'r') as f:
+                        existing_data = json.load(f)
+                    # Only overwrite if it has a stale "unknown" error
+                    existing_error = existing_data.get('error')
+                    if isinstance(existing_error, str) and existing_error.strip().lower() in ('unknown', 'none', 'null', ''):
+                        with open(p, 'w') as f:
+                            json.dump(status_data, f, indent=2)
+                        print(f">>> CAIN: Cleaned stale error at {p}", flush=True)
+                    # Also update if our status is newer
+                    elif status_data.get('last_updated') > existing_data.get('last_updated', ''):
+                        with open(p, 'w') as f:
+                            json.dump(status_data, f, indent=2)
+                        print(f">>> CAIN: Updated status at {p}", flush=True)
+                except json.JSONDecodeError:
+                    # File exists but is corrupted - overwrite with clean data
+                    with open(p, 'w') as f:
+                        json.dump(status_data, f, indent=2)
+                    print(f">>> CAIN: Fixed corrupted status file at {p}", flush=True)
+            else:
+                # File doesn't exist - create it with clean data
+                with open(p, 'w') as f:
+                    json.dump(status_data, f, indent=2)
+                print(f">>> CAIN: Created new status file at {p}", flush=True)
         except Exception as e:
-            print(f">>> CAIN WARNING: Could not write brain status file: {e}", flush=True)
+            print(f">>> CAIN WARNING: Could not write to {p}: {e}", flush=True)
 except Exception as e:
     print(f">>> CAIN WARNING: Could not update status file: {e}", flush=True)
 

entrypoint.sh

@@ -46,23 +46,41 @@ mkdir -p /data
 
 # CRITICAL: Clear stale error field from cain_status.json before startup
 # This prevents "unknown" errors from persisting across container restarts
-if [ -f "/data/cain_status.json" ]; then
-    echo "Cleaning stale error field from status file..."
-    # Use python to safely update JSON (sets error to null)
-    python3 -c "
+# Clean ALL possible status file locations to ensure consistency
+echo "Cleaning stale error field from status files..."
+python3 -c "
 import json
-try:
-    with open('/data/cain_status.json', 'r') as f:
-        data = json.load(f)
-    data['error'] = None
-    data['_cleaned_at'] = '$(date -u +"%Y-%m-%dT%H:%M:%SZ")'
-    with open('/data/cain_status.json', 'w') as f:
-        json.dump(data, f, indent=2)
-    print('Status file error field cleared')
-except Exception as e:
-    print(f'Could not clean status file: {e}')
-" 2>/dev/null || echo "(Could not clean status file - continuing)"
-fi
+from pathlib import Path
+
+status_files = [
+    Path('/data/cain_status.json'),
+    Path('/app/openclaw/.openclaw/agents/cain_status.json'),
+    Path('/app/.openclaw/agents/cain_status.json'),
+]
+
+cleaned = 0
+for status_file in status_files:
+    try:
+        if status_file.exists():
+            with open(status_file, 'r') as f:
+                data = json.load(f)
+            error = data.get('error')
+            # Fix: if error is string 'unknown' or contains 'unknown', set to null
+            if isinstance(error, str) and error.strip().lower() in ('unknown', 'none', 'null', ''):
+                data['error'] = None
+                data['_cleaned_at'] = '$(date -u +"%Y-%m-%dT%H:%M:%SZ")'
+                with open(status_file, 'w') as f:
+                    json.dump(data, f, indent=2)
+                cleaned += 1
+                print(f'  Cleaned: {status_file}')
+            elif error is None:
+                print(f'  OK: {status_file} (error already null)')
+    except Exception as e:
+        print(f'  Could not clean {status_file}: {e}')
+
+print(f'Cleaned {cleaned} status file(s)')
+" 2>/dev/null || echo "(Could not clean status files - continuing)"
+echo ""
 
 echo ""
 echo "=========================================="