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_database.py

@@ -24,7 +24,7 @@ def test_write_read_transaction():
     with tempfile.TemporaryDirectory() as tmp:
         db = make_db(tmp)
         try:
-            assert db.schema_version == 1
+            assert db.schema_version == 2
             db.write(lambda c: c.execute("INSERT INTO kv(k, v) VALUES ('a', '1')"))
             assert db.read(lambda c: c.execute("SELECT v FROM kv WHERE k='a'").fetchone()[0]) == "1"
 
@@ -94,8 +94,8 @@ def test_close_and_reinitialize():
 
         db2 = make_db(tmp)
         try:
-            assert db2.schema_version == 1
-            assert db2.read(lambda c: c.execute("SELECT MAX(version) FROM schema_version").fetchone()[0]) == 1
+            assert db2.schema_version == 2
+            assert db2.read(lambda c: c.execute("SELECT MAX(version) FROM schema_version").fetchone()[0]) == 2
         finally:
             db2.close()
 
@@ -123,7 +123,7 @@ def test_migration_backup_on_existing_db():
         db = Database(path, backup_dir=Path(tmp) / "backup")
         try:
             applied = db.initialize()
-            assert applied == [1]
+            assert applied == [1, 2]
             assert len(list((Path(tmp) / "backup").glob("app-pre-v0-*.db"))) == 1
         finally:
             db.close()