v0.5.4: 全面修复 — template literal URL, Cookie验证, 用户默认is_active, 默认账号路由, 空间信息, 密钥清理, promoForm修复

修复:
- quark-share.ts/storage.ts: 9处template literal ${}缺失导致fetch URL写死
- user/routes.ts: testCloudConnectionWithCookie缺await + 按cloudType分发驱动
- credential.service.ts: INSERT缺?参数 (9values/10cols)
- user/routes.ts: 用户新增网盘默认is_active=0
- admin.routes.ts: 新增PUT /admin/cloud-configs/:id/primary路由
- database.ts: is_primary列迁移
- UserDashboard.vue: 保存时传递storage_used/storage_total
- SystemConfig.vue: promoForm const重赋值bug
- config/index.ts: 移除泄露的默认密钥token

source_clean/frontend-src/src/pages/admin/AdminDashboard.vue

@@ -307,7 +307,6 @@ async function switchTrendDays(d: number) {
 }
 
 // Menu selection
-const activeMenu = ref('dashboard')
 const activeSystemSection = ref('')
 
 // ── Recent saves ──
@@ -381,6 +380,7 @@ const sysSectionTitles: Record<string, string> = {
   'sys-validation': '链接验证配置',
   'sys-filter': '搜索标题过滤规则',
   'sys-password': '修改管理员密码',
+  'sys-platforms': '推广平台管理',
 }
 
 const pageTitle = computed(() => {