chore: 重构前基线 — 9 个 sync task 全部 ok + akshare 移除 + mairui 资金流接入

状态：
- 9 个 sync task（stock_basic / kline_daily / kline_index / kline_5min /
  moneyflow / industry_sector / sector_features / share_snapshot / market_regime）
- 数据源：baostock + mairui + 雪球(pysnowball) + 新浪（4 个）
- 项目级约束：永远不用 akshare（已落实）
- kline_5min 改用 DB 快照统一全量/增量逻辑
- 零后端 Chrome 扩展 xueqiu_sync（独立项目）

app/api/routes/sync.py

@@ -0,0 +1,82 @@
+"""同步任务管理：手动触发 / 状态查询 / 失败重试。"""
+from __future__ import annotations
+
+import threading
+from typing import Any
+
+from fastapi import APIRouter, HTTPException, Query
+
+from app.core.sync import get_registry_status
+from app.tasks import get_task, TASKS
+
+router = APIRouter(prefix="/api/sync", tags=["sync"])
+
+# 防重入：同一 dataset_id 只能有一个 run 在跑
+_running_locks: dict[str, threading.Lock] = {}
+_locks_guard = threading.Lock()
+
+
+def _get_lock(dataset_id: str) -> threading.Lock:
+    with _locks_guard:
+        if dataset_id not in _running_locks:
+            _running_locks[dataset_id] = threading.Lock()
+        return _running_locks[dataset_id]
+
+
+@router.get("/tasks")
+def list_tasks():
+    return {"tasks": list(TASKS.keys())}
+
+
+@router.get("/registry")
+def registry_status():
+    return {"registry": get_registry_status()}
+
+
+@router.get("/registry/{dataset_id}")
+def registry_one(dataset_id: str):
+    rows = get_registry_status()
+    for r in rows:
+        if r["dataset_id"] == dataset_id:
+            return r
+    raise HTTPException(404, f"未知 dataset_id: {dataset_id}")
+
+
+@router.post("/run/{dataset_id}")
+def run_task(dataset_id: str, force: bool = Query(False)):
+    """同步触发一次。如果已在跑且 force=False 则返回 409。"""
+    if dataset_id not in TASKS:
+        raise HTTPException(404, f"未知 dataset_id: {dataset_id}，可选: {list(TASKS)}")
+    lk = _get_lock(dataset_id)
+    if not lk.acquire(blocking=False):
+        if not force:
+            raise HTTPException(409, f"{dataset_id} 正在运行中")
+        # force=True 时阻塞等
+        lk.acquire()
+
+    def _do():
+        try:
+            task = get_task(dataset_id)
+            return task.run(trigger_source="manual")
+        finally:
+            lk.release()
+
+    thread = threading.Thread(target=_do, daemon=True, name=f"manual-{dataset_id}")
+    thread.start()
+    return {"status": "accepted", "dataset_id": dataset_id, "trigger": "manual"}
+
+
+@router.post("/reset/{dataset_id}")
+def reset_status(dataset_id: str):
+    """清除 needs_resync / 错误状态，允许下次调度重试。"""
+    if dataset_id not in TASKS:
+        raise HTTPException(404, f"未知 dataset_id: {dataset_id}")
+    from app.core.db import ops as db_ops
+    db_ops.update_dataset_registry_state(
+        dataset_id,
+        status="idle",
+        needs_resync=0,
+        last_error=None,
+        message="手动重置",
+    )
+    return {"status": "ok", "dataset_id": dataset_id}