fix: sqlite cross-thread access

app/storage/db.py

@@ -10,7 +10,7 @@ def connect(db_path: str) -> sqlite3.Connection:
     parent = os.path.dirname(os.path.abspath(db_path))
     if parent and not os.path.exists(parent):
         os.makedirs(parent, exist_ok=True)
-    conn = sqlite3.connect(db_path, timeout=30)
+    conn = sqlite3.connect(db_path, timeout=30, check_same_thread=False)
     conn.row_factory = sqlite3.Row
     conn.execute("PRAGMA journal_mode=WAL")
     conn.execute("PRAGMA busy_timeout=30000")