Improve load_cain_status() to auto-recreate status file

- Call ensure_cain_status_file() when file is missing
- Handle JSON decode errors by recreating the file
- Add proper error logging for all failure cases

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

app.py

@@ -347,13 +347,24 @@ def load_cain_status() -> Dict[str, Any]:
             with open(CAIN_STATUS_FILE, 'r') as f:
                 return json.load(f)
         else:
-            return {
-                "current_state": "unknown",
-                "last_updated": datetime.utcnow().isoformat() + "Z",
-                "agent": "cain",
-                "error": "Status file not found"
-            }
+            # Ensure status file exists before returning
+            status = ensure_cain_status_file()
+            log_startup_warning("load_cain_status", "Status file was missing, recreated it", {
+                "path": str(CAIN_STATUS_FILE)
+            })
+            return status
+    except json.JSONDecodeError as e:
+        log_startup_error("load_cain_status", f"Invalid JSON in status file: {e}", {
+            "path": str(CAIN_STATUS_FILE)
+        })
+        # Recreate the file with valid data
+        status = ensure_cain_status_file()
+        return status
     except Exception as e:
+        log_startup_error("load_cain_status", f"Error loading status: {e}", {
+            "path": str(CAIN_STATUS_FILE),
+            "error_type": type(e).__name__
+        })
         return {
             "current_state": "error",
             "last_updated": datetime.utcnow().isoformat() + "Z",