admin的数据库文件补全，修复uvue中的数据库接入bug

docs/sql/30_rpc/decoration/rpc_admin_delete_diy_page_v1.sql

@@ -1,5 +1,5 @@
 -- RPC: rpc_admin_delete_diy_page
--- 管理端删除 DIY 页面配置
+-- 管理端删除 DIY 页面配置（支持权限检查与首页保护）
 
 CREATE OR REPLACE FUNCTION public.rpc_admin_delete_diy_page(
   p_id uuid
@@ -11,24 +11,29 @@ SET search_path = public
 AS $$
 DECLARE
   v_ok boolean;
+  v_user_id UUID;
 BEGIN
-  -- 1. 权限检查 (仅管理员)
-  IF NOT EXISTS (
-    SELECT 1 FROM public.ak_users u
-    WHERE u.id = auth.uid() AND u.role = 'admin'
-  ) THEN
-    RAISE EXCEPTION 'permission denied';
+  -- 1. 权限检查 (使用通用权限校验函数)
+  IF NOT public.check_admin_permission('decoration:page:delete') THEN
+    RAISE EXCEPTION 'Permission denied: decoration:page:delete';
   END IF;
 
-  -- 2. 执行删除 (不允许删除当前生效的首页)
+  -- 2. 获取当前操作用户 ID
+  SELECT id INTO v_user_id FROM public.ak_users WHERE auth_id = auth.uid();
+
+  -- 3. 校验：不允许删除当前生效的首页
   IF EXISTS (
     SELECT 1 FROM public.ak_diy_pages 
-    WHERE id = p_id AND is_home = true
+    WHERE id = p_id AND is_home = true AND deleted_at IS NULL
   ) THEN
     RAISE EXCEPTION 'cannot delete the active home page';
   END IF;
 
-  DELETE FROM public.ak_diy_pages WHERE id = p_id;
+  -- 4. 执行软删除：标记 deleted_at
+  UPDATE public.ak_diy_pages
+  SET deleted_at = now(),
+      deleted_by = v_user_id
+  WHERE id = p_id AND deleted_at IS NULL;
   
   GET DIAGNOSTICS v_ok = ROW_COUNT;
   RETURN v_ok;