fix: improve maintenance and synchronize live conversations

backend/tests/api/test_mcp_tool.py

@@ -25,7 +25,7 @@ from fastapi import FastAPI
 
 from app.api import mcp_tool as mcp_api
 from app.core.config import settings
-from app.core.auth import get_current_user, require_permissions
+from app.core.auth import get_current_user
 from app.database import get_db
 from app.models.user import User
 from app.models.role import Role
@@ -34,7 +34,6 @@ from app.models.agent import Agent, AgentType
 from app.models.mcp_tool import MCPTransportType
 from app.repositories.mcp_tool import MCPToolRepository
 from app.models.schemas.mcp_tool import (
-    MCPToolCreate, MCPToolUpdate, MCPToolToAgentCreate,
     MAX_USAGE_GUIDANCE_CHARS, SECRET_MASK,
 )
 from app.models.ticket_settings import OrganizationTicketSettings
@@ -108,7 +107,7 @@ def test_create_and_get_mcp_tool(client: TestClient, db):
     # Disable enterprise gating for tests
     mcp_api.HAS_ENTERPRISE = False
     # Fetch the user created in fixture
-    user = db.query(User).first()
+    db.query(User).first()
 
     # Create an MCP tool
     payload = {