第一次提交

app/api/jobs.py

@@ -0,0 +1,28 @@
+"""任务状态查询（前端轮询）。"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.db import get_db
+from app.deps import get_current_user
+from app.models.job import ProcessingJob
+from app.models.user import User
+from app.schemas.job import JobOut
+
+router = APIRouter(prefix="/api/jobs", tags=["jobs"])
+
+
+@router.get("/{job_id}", response_model=JobOut)
+async def get_job(
+    job_id: str,
+    db: AsyncSession = Depends(get_db),
+    current: User = Depends(get_current_user),
+):
+    job = await db.scalar(
+        select(ProcessingJob).where(
+            ProcessingJob.id == job_id, ProcessingJob.user_id == current.id
+        )
+    )
+    if job is None:
+        raise HTTPException(status.HTTP_404_NOT_FOUND, detail="任务不存在")
+    return job