feat(xray/dns): align DNS settings with Xray docs + UI polish

- DNS server modal: rename expectIPs -> expectedIPs (per docs); add
  per-server tag, clientIP, serveStale, serveExpiredTTL, timeoutMs;
  flip skipFallback default to false; hydration still accepts legacy
  expectIPs for back-compat.
- DNS tab: add hosts editor (domain -> IP/array), serveStale +
  serveExpiredTTL controls, "Use Preset" button bringing back the
  legacy preset gallery (Google / Cloudflare / AdGuard + Family
  variants — fixed AdGuard Family IPs that were wrong in legacy),
  and a "Delete All" button to wipe the server list at once.
- i18n: add 15 new dns.* keys across all 13 locales.
- Frontend-wide formatter pass on Vue components (whitespace and
  attribute layout only, no behavior changes).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/translation/id-ID.json

@@ -754,7 +754,22 @@
         "useSystemHostsDesc": "Gunakan file hosts dari sistem yang terinstal",
         "usePreset": "Gunakan templat",
         "dnsPresetTitle": "Templat DNS",
-        "dnsPresetFamily": "Keluarga"
+        "dnsPresetFamily": "Keluarga",
+        "serveStale": "Sajikan Kedaluwarsa",
+        "serveStaleDesc": "Mengembalikan hasil cache yang kedaluwarsa saat memperbarui di latar belakang",
+        "serveExpiredTTL": "TTL Kedaluwarsa",
+        "serveExpiredTTLDesc": "Masa berlaku (detik) entri cache kedaluwarsa; 0 = tidak pernah kedaluwarsa",
+        "timeoutMs": "Batas waktu (ms)",
+        "skipFallback": "Lewati Fallback",
+        "finalQuery": "Kueri Akhir",
+        "hosts": "Hosts",
+        "hostsAdd": "Tambah Host",
+        "hostsEmpty": "Tidak ada Host yang ditentukan",
+        "hostsDomain": "Domain (mis. domain:example.com)",
+        "hostsValues": "IP atau domain — ketik dan tekan Enter",
+        "clearAll": "Hapus Semua",
+        "clearAllTitle": "Hapus semua server DNS?",
+        "clearAllConfirm": "Ini akan menghapus semua server DNS dari daftar. Tidak dapat dibatalkan."
       },
       "fakedns": {
         "add": "Tambahkan DNS Palsu",