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/ar-EG.json

@@ -80,7 +80,6 @@
   "somethingWentWrong": "حدث خطأ ما",
   "subscription": {
     "title": "معلومات الاشتراك",
-    "subId": "معرّف الاشتراك",
     "status": "الحالة",
     "downloaded": "التنزيل",
     "uploaded": "الرفع",
@@ -93,7 +92,20 @@
     "noExpiry": "بدون انتهاء",
     "copyAllConfigs": "نسخ جميع الإعدادات",
     "copyAllConfigsCopied": "تم نسخ جميع الإعدادات",
-    "email": "البريد"
+    "daysLeft": "الأيام المتبقية",
+    "expired": "منتهي الصلاحية",
+    "depleted": "نفدت البيانات",
+    "ofTotal": "من {total}",
+    "tabLinks": "الاشتراك",
+    "tabApps": "التطبيقات",
+    "tabConfigs": "الكونفيجات",
+    "scanTitle": "امسح بهاتفك",
+    "scanHint": "امسح هذا الرمز في تطبيق VPN لإضافة الاشتراك دون نسخ الرابط.",
+    "updateInterval": "تحديث تلقائي كل {hours} ساعة",
+    "support": "الدعم",
+    "qrTitle": "امسح. استورد. اتصل.",
+    "qrHint": "امسح الرمز بتطبيق العميل. لا تشارك هذا الرمز مع أحد.",
+    "saveQr": "حفظ QR"
   },
   "menu": {
     "theme": "الثيم",