feat: 简介模式菜单按类型 A/B 分套，兼容未配置的旧部署

两套网页可通过 runtime-config.js 的 VITE_COMPACT_MENU_TYPE 加载各自左侧菜单；缺省或旧页面不传参数时仍读取原来的类型 A 数据。

Co-authored-by: Cursor <cursoragent@cursor.com>

offline-backend-20260512/backend/scripts/sql/column_additions_mysql.sql

@@ -142,6 +142,12 @@ CALL _add_column_if_missing('users', 'approved', 'TINYINT(1) NOT NULL DEFAULT 1'
 -- ORM: UserRow.login_password = String(255), nullable。
 CALL _add_column_if_missing('users', 'login_password', 'VARCHAR(255) NULL DEFAULT NULL');
 
+-- ---- compact_menu_overrides.menu_type: 简介模式菜单分套(A/B),对应 migration 20260819_01 ----
+-- 两套网页部署各自一份左侧简介菜单。存量行视为类型 A;类型 B 的 node_id 带 B:: 前缀,
+-- 以免在仍以 node_id 为单列主键的旧库上撞主键。
+-- ORM: CompactMenuOverrideRow.menu_type = String(32), NOT NULL, default A, server_default A。
+CALL _add_column_if_missing('compact_menu_overrides', 'menu_type', "VARCHAR(32) NOT NULL DEFAULT 'A'");
+
 -- ---- 清理临时存储过程 --------------------------------------------------------
 DROP PROCEDURE IF EXISTS _add_column_if_missing;
 
@@ -205,5 +211,6 @@ SELECT table_name, column_name
         OR (table_name = 'roundtable_drafts' AND column_name = 'task_id')
         OR (table_name = 'roundtable_jobs' AND column_name = 'task_id')
         OR (table_name = 'position_roundtable_sessions' AND column_name = 'task_scoped')
-        OR (table_name = 'task_buttons' AND column_name IN ('append_auth', 'auth_token_param', 'auth_name_param')))
+        OR (table_name = 'task_buttons' AND column_name IN ('append_auth', 'auth_token_param', 'auth_name_param'))
+        OR (table_name = 'compact_menu_overrides' AND column_name = 'menu_type'))
  ORDER BY table_name, column_name;