feat: 采集任务状态跟踪 ingest_jobs

新增 ingest_jobs 表(UUID/task/params/status/result/error/时间戳),
POST /ingest/bzzoiro 启动前插入 job(pending)→ 后台 running → success/failed,
响应新增 job_id(兼容原 message)。

Admin GET /admin/ingest/jobs/{id} 与 /admin/ingest/jobs?limit= 只读查询;
Collection 页提交后轮询 job 至终态,展示真实 result/error 汇总。
迁移 0019_ingest_jobs + 分批 get_uow/BzzoiroSource/IngestFailure 不变。

全量测试 270 通过。

src/api/routes/admin_ingest_jobs.py

@@ -0,0 +1,55 @@
+"""后台管理:采集任务状态查询(只读)。
+
+GET /api/v1/admin/ingest/jobs/{job_id} — 单任务详情
+GET /api/v1/admin/ingest/jobs?limit=N — 最近任务列表(默认 20)
+"""
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy import desc, select
+
+from src.api.deps import require_admin
+from src.api.schemas import IngestJobOut
+from src.db.base import AsyncSession, get_db_read
+from src.db.models import IngestJob
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/api/v1/admin", tags=["admin"], dependencies=[Depends(require_admin)])
+
+
+@router.get("/ingest/jobs/{job_id}", response_model=IngestJobOut)
+async def get_ingest_job(job_id: str, db: AsyncSession = Depends(get_db_read)):
+    """查询单个采集任务状态。"""
+    job = await db.get(IngestJob, job_id)
+    if job is None:
+        raise HTTPException(404, f"采集任务不存在: {job_id}")
+    return _job_to_out(job)
+
+
+@router.get("/ingest/jobs", response_model=list[IngestJobOut])
+async def list_ingest_jobs(
+    limit: int = Query(20, ge=1, le=100, description="返回条数"),
+    db: AsyncSession = Depends(get_db_read),
+):
+    """查询最近采集任务(最新在前)。"""
+    rows = (
+        await db.execute(select(IngestJob).order_by(desc(IngestJob.created_at)).limit(limit))
+    ).scalars().all()
+    return [_job_to_out(j) for j in rows]
+
+
+def _job_to_out(job: IngestJob) -> IngestJobOut:
+    return IngestJobOut(
+        id=job.id,
+        task=job.task,
+        params=job.params or {},
+        status=job.status,
+        result=job.result,
+        error=job.error,
+        created_at=job.created_at,
+        started_at=job.started_at,
+        finished_at=job.finished_at,
+    )