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/fa-IR.json

@@ -80,8 +80,6 @@
   "somethingWentWrong": "مشکلی پیش آمد",
   "subscription": {
     "title": "اطلاعات سابسکریپشن",
-    "subId": "شناسه اشتراک",
-    "email": "ایمیل",
     "status": "وضعیت",
     "downloaded": "دانلود",
     "uploaded": "آپلود",
@@ -93,7 +91,21 @@
     "unlimited": "نامحدود",
     "noExpiry": "بدون انقضا",
     "copyAllConfigs": "کپی همه کانفیگ‌ها",
-    "copyAllConfigsCopied": "همه کانفیگ‌ها کپی شدند"
+    "copyAllConfigsCopied": "همه کانفیگ‌ها کپی شدند",
+    "daysLeft": "روز باقی‌مانده",
+    "expired": "منقضی شده",
+    "depleted": "حجم تمام شده",
+    "ofTotal": "از {total}",
+    "tabLinks": "اشتراک",
+    "tabApps": "اپلیکیشن‌ها",
+    "tabConfigs": "کانفیگ‌ها",
+    "scanTitle": "اسکن با گوشی",
+    "scanHint": "این کد را در اپلیکیشن VPN اسکن کنید تا اشتراک بدون کپی‌کردن لینک اضافه شود.",
+    "updateInterval": "به‌روزرسانی خودکار هر {hours} ساعت",
+    "support": "پشتیبانی",
+    "qrTitle": "اسکن. افزودن. اتصال.",
+    "qrHint": "با اپلیکیشن کلاینت اسکن کنید. این کد را به کسی ندهید.",
+    "saveQr": "ذخیره QR"
   },
   "menu": {
     "theme": "تم",