Add admin review and confirmation of cross-service user IDs

backend/app/db.py

@@ -193,6 +193,19 @@ def init_db() -> None:
                 PRIMARY KEY (source, local_user_id), UNIQUE (source, jellyfin_user_id)
             )
         """)
+        conn.execute("""
+            CREATE TABLE IF NOT EXISTS user_identity_confirmations (
+                local_user_id INTEGER PRIMARY KEY,
+                jellyfin_server_id TEXT NOT NULL,
+                jellyfin_user_id TEXT NOT NULL,
+                jellyfin_source TEXT NOT NULL,
+                seerr_source TEXT NOT NULL,
+                seerr_user_id INTEGER NOT NULL,
+                confirmed_at TEXT NOT NULL,
+                confirmed_by TEXT NOT NULL,
+                UNIQUE (jellyfin_server_id, jellyfin_user_id)
+            )
+        """)
         conn.execute("""
             CREATE TABLE IF NOT EXISTS request_repairs (
                 id INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -1288,6 +1301,7 @@ def set_user_jellyseerr_id(username: str, jellyseerr_user_id: Optional[int]) ->
         conn.execute(
             """
             UPDATE users SET jellyseerr_user_id = ? WHERE username = ? COLLATE NOCASE
+            AND id NOT IN (SELECT local_user_id FROM user_identity_confirmations)
             """,
             (jellyseerr_user_id, username),
         )