chore: C2 DELETE 204+body, C4 cached_tokens, C5 utcnow + LICENSE (T011)

agent_platform/api.py

@@ -8,7 +8,7 @@ from typing import Optional, Dict, Any, List
 from contextlib import asynccontextmanager
 from pathlib import Path
 
-from fastapi import FastAPI, Depends, HTTPException, Request
+from fastapi import FastAPI, Depends, HTTPException, Request, Response
 from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.staticfiles import StaticFiles
 from fastapi.templating import Jinja2Templates
@@ -198,10 +198,10 @@ async def api_delete_agent(
         # Code-Agents: nur deaktivieren, damit sie beim nächsten Sync wieder da sind
         await set_agent_enabled(db, agent_id, False)
         await log_audit(db, agent_id=agent_id, user_id=user_id, action="agent_disabled_via_delete", target=agent_id)
-        return {"status": "disabled", "note": "Code-Agents werden nicht gelöscht, nur deaktiviert"}
+        return Response(status_code=204)
     await delete_agent(db, agent_id)
     await log_audit(db, agent_id=agent_id, user_id=user_id, action="agent_deleted", target=agent_id)
-    return {"status": "deleted"}
+    return Response(status_code=204)
 
 
 @app.post("/api/agents/{agent_id}/enable")