fix(payment): resolve PR audit issues

- Add payment navigation to AppSidebar (user orders + admin payment menu group with collapse)
- Add 5 missing nav i18n keys (myOrders, orderManagement, paymentDashboard, paymentConfig, paymentPlans)
- Renumber payment migrations 090-100 → 092-102 to avoid conflict with upstream 090/091
- Remove non-payment sora_client_enabled change, restore upstream purchase_subscription fields
- Remove extra 'data' from SettingsTab type union

frontend/src/i18n/locales/en.ts

@@ -353,7 +353,12 @@ export default {
     mySubscriptions: 'My Subscriptions',
     buySubscription: 'Recharge / Subscription',
     docs: 'Docs',
-    sora: 'Sora Studio'
+    sora: 'Sora Studio',
+    myOrders: 'My Orders',
+    orderManagement: 'Orders',
+    paymentDashboard: 'Payment Dashboard',
+    paymentConfig: 'Payment Config',
+    paymentPlans: 'Plans'
   },
 
   // Auth

frontend/src/i18n/locales/zh.ts

@@ -353,7 +353,12 @@ export default {
     mySubscriptions: '我的订阅',
     buySubscription: '充值/订阅',
     docs: '文档',
-    sora: 'Sora 创作'
+    sora: 'Sora 创作',
+    myOrders: '我的订单',
+    orderManagement: '订单管理',
+    paymentDashboard: '支付概览',
+    paymentConfig: '支付配置',
+    paymentPlans: '订阅套餐'
   },
 
   // Auth