Clean up review findings

app.py

@@ -14,6 +14,7 @@ import urllib.error
 import urllib.request
 import xml.etree.ElementTree as ET
 from binascii import Error as BinasciiError
+from contextlib import contextmanager
 from datetime import datetime, timezone
 from http.server import ThreadingHTTPServer
 from pathlib import Path
@@ -53,8 +54,8 @@ from app_support import (
     client_address_is_local,
     clear_remote_access_sessions,
     debug_log,
+    ensure_project_app_root,
     load_json,
-    migrate_legacy_state_storage,
     normalize_season,
     normalize_config,
     normalize_episode_offset,
@@ -1473,10 +1474,18 @@ class WatchlistStore:
             "media_type": "tv",
         }
 
+    @contextmanager
     def _connect(self):
         conn = sqlite3.connect(STATE_DB_PATH, timeout=30)
         conn.row_factory = sqlite3.Row
-        return conn
+        try:
+            yield conn
+            conn.commit()
+        except Exception:
+            conn.rollback()
+            raise
+        finally:
+            conn.close()
 
     def _table_columns_conn(self, conn, table_name):
         return [str(row["name"]) for row in conn.execute(f"PRAGMA table_info({table_name})").fetchall()]
@@ -3158,7 +3167,7 @@ def runtime_state():
 
 
 def build_runtime(start_workers=None):
-    migrate_legacy_state_storage()
+    ensure_project_app_root()
     worker_state = background_workers_enabled() if start_workers is None else bool(start_workers) and background_workers_enabled()
     config = normalize_config(load_json(CONFIG_PATH, DEFAULT_CONFIG))
     write_json(CONFIG_PATH, config)