Add /api/auth/status endpoint for JavaScript compatibility

src/server/fastapi_app.py

@@ -343,6 +343,31 @@ async def logout(current_user: Dict = Depends(get_current_user)) -> Dict[str, An
         "message": "Logged out successfully. Please remove the token from client storage."
     }
 
+@app.get("/api/auth/status", response_model=Dict[str, Any], tags=["Authentication"])
+async def auth_status(request: Request) -> Dict[str, Any]:
+    """
+    Check authentication status and configuration.
+    
+    This endpoint checks if master password is configured and if user is authenticated.
+    """
+    has_master_password = bool(settings.master_password_hash or settings.master_password)
+    
+    # Check if user has valid token
+    authenticated = False
+    try:
+        auth_header = request.headers.get("authorization")
+        if auth_header and auth_header.startswith("Bearer "):
+            token = auth_header.split(" ")[1]
+            payload = verify_jwt_token(token)
+            authenticated = payload is not None
+    except Exception:
+        authenticated = False
+    
+    return {
+        "has_master_password": has_master_password,
+        "authenticated": authenticated
+    }
+
 # Health check endpoint
 @app.get("/health", response_model=HealthResponse, tags=["System"])
 async def health_check() -> HealthResponse: