feat(task-018): add observability retry cancel and audit trail

apps/backend/src/presentation/routes/agent_jobs.py

@@ -81,23 +81,33 @@ def get_agent_job_route(
 )
 def post_retry_agent_job(
     job_id: UUID,
-    _: CurrentUser = Depends(require_roles(ADMIN_ROLES)),
+    current_user: CurrentUser = Depends(require_roles(ADMIN_ROLES)),
     repository: BackendRepository = Depends(get_repository),
 ) -> AgentJobResponse:
     try:
-        return retry_agent_job(repository, job_id)
+        return retry_agent_job(
+            repository,
+            job_id,
+            actor_user_id=current_user.id,
+        )
     except LookupError as error:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Not Found") from error
+    except PermissionError as error:
+        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail=str(error)) from error
 
 
 @router.post("/agent-jobs/{job_id}/cancel", response_model=AgentJobResponse)
 def post_cancel_agent_job(
     job_id: UUID,
-    _: CurrentUser = Depends(require_roles(ADMIN_ROLES)),
+    current_user: CurrentUser = Depends(require_roles(ADMIN_ROLES)),
     repository: BackendRepository = Depends(get_repository),
 ) -> AgentJobResponse:
     try:
-        return cancel_agent_job(repository, job_id)
+        return cancel_agent_job(
+            repository,
+            job_id,
+            actor_user_id=current_user.id,
+        )
     except LookupError as error:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Not Found") from error