fix: close data integrity and hot-reload review findings

Backfill same-day snapshots for newly added or restored videos, preserve successful fan snapshots on resume, persist incomplete state before forced re-runs, and split collection completion from backup completion so failed backups can retry without API calls. Reject missing data payloads instead of treating them as empty folders, guard against mass-unfav on suspicious empty remote folders, rebuild Bilibili clients when credentials change, recompute primary folder ownership from active relations with per-folder fav_time, preserve original titles for dropped invalid videos, poll config every 60 seconds, and fix favsort verify interval and mixed resource types.

reaction_board/services/folder_sync.py

@@ -19,7 +19,6 @@ import time
 from dataclasses import dataclass, field
 from typing import Any
 
-from ..bilibili.client import BilibiliClient
 from ..config import AppConfig, ConfigStore, FolderConfig
 from ..repository import Repository
 
@@ -113,18 +112,29 @@ class FolderSyncService:
         self,
         config_store: ConfigStore,
         repository: Repository,
-        client: BilibiliClient,
+        client=None,
         *,
+        client_provider=None,
         clock=time.time,
         logger=None,
         capacity_warn: int = CAPACITY_WARN,
+        allow_empty_folders: bool = False,
     ) -> None:
+        if client is None and client_provider is None:
+            raise ValueError("必须提供 client 或 client_provider")
         self.config_store = config_store
         self.repo = repository
         self.client = client
+        self.client_provider = client_provider
         self._clock = clock
         self.logger = logger
         self.capacity_warn = capacity_warn
+        self.allow_empty_folders = allow_empty_folders
+
+    def _client(self):
+        if self.client_provider is not None:
+            return self.client_provider.get()
+        return self.client
 
     def _now(self) -> int:
         return int(self._clock())
@@ -135,6 +145,7 @@ class FolderSyncService:
 
     def run(self, *, full_refresh: bool = False) -> SyncSummary:
         cfg = self.config_store.get()
+        client = self._client()
         now = self._now()
         summary = SyncSummary(started_at=now)
         self._log(
@@ -151,7 +162,9 @@ class FolderSyncService:
 
         for folder in cfg.folders:
             try:
-                result = self._sync_folder(cfg, folder, now=now, force_full=full_refresh)
+                result = self._sync_folder(
+                    client, cfg, folder, now=now, force_full=full_refresh
+                )
             except Exception as exc:  # noqa: BLE001  单个夹失败不阻塞其它夹
                 result = FolderSyncResult(
                     media_id=folder.media_id,
@@ -191,6 +204,7 @@ class FolderSyncService:
 
     def _sync_folder(
         self,
+        client,
         cfg: AppConfig,
         folder: FolderConfig,
         *,
@@ -206,13 +220,20 @@ class FolderSyncService:
             >= cfg.schedule.full_folder_refresh_hours * 3600
         )
 
-        resources = self.client.fav_ids(folder.media_id)
+        resources = client.fav_ids(folder.media_id)
         remote_map = {item.aid: item for item in resources if item.type == 2}
         remote = set(remote_map)
         local = self.repo.folder_active_aids(folder.media_id)
         added = remote - local
         removed = local - remote
 
+        if not remote and local and not self.allow_empty_folders:
+            raise RuntimeError(
+                f"收藏夹 {folder.media_id} 远端返回 0 条，但本地仍有 {len(local)} 条；"
+                f"疑似接口异常，已跳过差集。确认收藏夹确实被清空后，"
+                f"可使用 --allow-empty-folder 重试"
+            )
+
         result = FolderSyncResult(
             media_id=folder.media_id,
             year=folder.year,
@@ -228,7 +249,7 @@ class FolderSyncService:
             targets |= remote
 
         if targets:
-            infos = self.client.fav_infos(
+            infos = client.fav_infos(
                 folder.media_id,
                 sorted(targets),
                 folder_mid=cfg.bilibili.read.mid,