feat(sub): redesign the subscription page around usage, tabs and app imports

The info page was a long key/value table followed by every link and two
app dropdowns, and it rendered left-to-right even for Persian and Arabic.
It now leads with a usage ring, the remaining quota and a stats grid, and
splits the rest into Subscription / Apps / Configs tabs.

- Status tells expired, data-used-up and disabled apart instead of one
  "Inactive", replacing the hard-coded English expiry chip.
- The Apps tab keeps every Android and iOS app with its existing deep
  link, preselects the visitor's platform and adds Windows: Hiddify and
  Clash Verge Rev import directly, v2rayN copies the link.
- fa-IR and ar-EG render right-to-left; URLs, IDs and sizes stay LTR.
- The footer shows the support link and the client refresh interval, so
  subPageContext now carries subUpdates (also in ?format=info).
- Status, days-left and app deep-link logic lives in subPageModel.ts,
  with unit tests pinning the deep links the page already shipped.

internal/web/translation/zh-TW.json

@@ -80,7 +80,6 @@
   "somethingWentWrong": "發生錯誤",
   "subscription": {
     "title": "訂閱資訊",
-    "subId": "訂閱 ID",
     "status": "狀態",
     "downloaded": "已下載",
     "uploaded": "已上傳",
@@ -93,7 +92,20 @@
     "noExpiry": "無到期",
     "copyAllConfigs": "複製全部配置",
     "copyAllConfigsCopied": "已複製全部配置",
-    "email": "電子郵件"
+    "daysLeft": "剩餘天數",
+    "expired": "已過期",
+    "depleted": "流量已用完",
+    "ofTotal": "共 {total}",
+    "tabLinks": "訂閱",
+    "tabApps": "應用程式",
+    "tabConfigs": "設定檔",
+    "scanTitle": "用手機掃描",
+    "scanHint": "在 VPN 應用程式中掃描此 QR 碼，無需複製連結即可新增訂閱。",
+    "updateInterval": "每 {hours} 小時自動更新",
+    "support": "支援",
+    "qrTitle": "掃描。匯入。連線。",
+    "qrHint": "使用用戶端應用程式掃描。請勿外洩此 QR 碼。",
+    "saveQr": "儲存 QR 碼"
   },
   "menu": {
     "theme": "主題",