fix(d2): datetime.now(UTC) everywhere + SQLITE-001 automation tests on ephemeral postgres

app/plugins/builtins/mcp_client/routes.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import logging
 import uuid
-from datetime import datetime
+from datetime import UTC, datetime
 from typing import Any
 
 from fastapi import APIRouter, Depends, HTTPException
@@ -170,7 +170,7 @@ async def list_server_tools(
         tools_resp = await client.list_tools()
         # Update last_connected_at
         await db.execute(
-            update(McpServerConfigModel).where(McpServerConfigModel.id == sid).values(last_connected_at=datetime.utcnow())
+            update(McpServerConfigModel).where(McpServerConfigModel.id == sid).values(last_connected_at=datetime.now(UTC))
         )
         await db.commit()
         return tools_resp