fix(daemons): block owner transfer while assigned

app/api/v1_admin_daemons.py

@@ -8,6 +8,7 @@ from fastapi import APIRouter, Depends, HTTPException, Response, status
 
 from app.core.auth import AuthContext, require_admin
 from app.core.config import Settings, get_settings
+from app.domain.errors import DaemonInUseError
 from app.repositories.factory import get_portfolio_repository_from_settings
 from app.schemas.v1 import (
     DaemonAdminResponse,
@@ -38,6 +39,8 @@ def _to_response(daemon) -> DaemonAdminResponse:
 
 def _daemon_error_to_http(exc: ValueError) -> HTTPException:
     detail = str(exc)
+    if isinstance(exc, DaemonInUseError):
+        return HTTPException(status_code=status.HTTP_409_CONFLICT, detail=detail)
     if "찾을 수 없습니다" in detail:
         return HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=detail)
     if "이미 존재하는 daemon slug" in detail: