Unify user management and add reviewed identity repairs

backend/app/db.py

@@ -206,6 +206,16 @@ def init_db() -> None:
                 UNIQUE (jellyfin_server_id, jellyfin_user_id)
             )
         """)
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS user_identity_repairs (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                local_user_id INTEGER NOT NULL,
+                before_json TEXT NOT NULL,
+                after_json TEXT NOT NULL,
+                repaired_at TEXT NOT NULL,
+                repaired_by TEXT NOT NULL
+            )
+        """)
         conn.execute("""
             CREATE TABLE IF NOT EXISTS request_repairs (
                 id INTEGER PRIMARY KEY AUTOINCREMENT,