feat：移除了弹窗，服务器添加sls

packages/app-lib/migrations/20260908010000_instance-direct-link-game-dir-mode.sql

@@ -0,0 +1,4 @@
+-- The selected external-root layout is recorded per linked instance so it
+-- remains stable after Settings closes and across application restarts.
+-- NULL keeps the legacy launcher-specific automatic behavior.
+ALTER TABLE instances ADD COLUMN linked_game_dir_mode TEXT NULL;