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.

tests/test_folder_sync.py

@@ -38,10 +38,11 @@ def http_json(payload):
 
 
 class FakeFavTransport:
-    def __init__(self, folders, infos, *, fail_media=None):
+    def __init__(self, folders, infos, *, fail_media=None, omit_ids_data=None):
         self.folders = {k: list(v) for k, v in folders.items()}
         self.infos = dict(infos)
         self.fail_media = fail_media
+        self.omit_ids_data = omit_ids_data
         self.ids_calls = []
         self.info_calls = []
 
@@ -52,6 +53,8 @@ class FakeFavTransport:
             self.ids_calls.append(media_id)
             if self.fail_media == media_id:
                 raise TransportError("ids 网络错误")
+            if self.omit_ids_data == media_id:
+                return http_json({"code": 0, "message": "OK", "ttl": 1})
             data_rows = [
                 {"id": aid, "type": 2, "bv_id": f"BV{aid}", "bvid": f"BV{aid}"}
                 for aid in self.folders.get(media_id, [])
@@ -284,6 +287,51 @@ def test_blacklist_seed_only_once():
             db.close()
 
 
+def test_empty_remote_requires_explicit_opt_in():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = FakeFavTransport(
+            {F1: [1101, 1102], F2: []},
+            {1101: valid(1101), 1102: valid(1102)},
+        )
+        clock = [1_800_000_000]
+        db, repo, service = make_service(tmp, transport, clock)
+        try:
+            service.run()
+            transport.folders[F1] = []
+            clock[0] += 3600
+            summary = service.run()
+            assert summary.ok is False
+            assert "疑似接口异常" in summary.folders[0].error
+            assert repo.get_video(1101)["status"] == "active"
+            assert repo.folder_active_aids(F1) == {1101, 1102}
+
+            service.allow_empty_folders = True
+            summary = service.run()
+            assert summary.ok is True
+            assert repo.get_video(1101)["status"] == "unfaved"
+            assert repo.folder_active_aids(F1) == set()
+        finally:
+            db.close()
+
+
+def test_missing_ids_data_aborts_folder():
+    with tempfile.TemporaryDirectory() as tmp:
+        transport = FakeFavTransport(
+            {F1: [1101], F2: []},
+            {1101: valid(1101)},
+            omit_ids_data=F1,
+        )
+        clock = [1_800_000_000]
+        db, repo, service = make_service(tmp, transport, clock)
+        try:
+            summary = service.run()
+            assert summary.ok is False
+            assert "data" in summary.folders[0].error
+            assert repo.get_video(1101) is None
+        finally:
+            db.close()
+
+
 def main():
     test_initial_import_and_incremental_skip()
     test_diff_add_and_remove()
@@ -291,6 +339,8 @@ def main():
     test_capacity_warning_does_not_move_folder()
     test_folder_error_does_not_block_other_folders()
     test_blacklist_seed_only_once()
+    test_empty_remote_requires_explicit_opt_in()
+    test_missing_ids_data_aborts_folder()
     print("OK: 收藏夹初始导入、差集同步、失效识别与容量预警测试全部通过")