fix(hub): add monitor nav link with hub i18n keys

Co-authored-by: Cursor <cursoragent@cursor.com>

assets/i18n/hub-en.json

@@ -17,6 +17,8 @@
   "nav.live_sessions": "Live sessions",
   "nav.education": "Education (demo)",
   "nav.remote": "Remote access",
+  "nav.monitor": "Monitoring",
+  "nav.monitor_desc": "Grafana dashboards — cluster health, alerts, exporters.",
   "nav.short_links": "Short links",
   "nav.short_links_desc": "Mint bearer tokens and shorten URLs for s.f0xx.org.",
   "nav.console_desc": "Issue triage home and workspace cards.",

assets/i18n/hub-ru.json

@@ -17,6 +17,8 @@
   "nav.live_sessions": "Live-сессии",
   "nav.education": "Education (demo)",
   "nav.remote": "Удалённый доступ",
+  "nav.monitor": "Мониторинг",
+  "nav.monitor_desc": "Дашборды Grafana — состояние кластера, алерты, экспортёры.",
   "nav.short_links": "Короткие ссылки",
   "nav.short_links_desc": "Токены и сокращение URL для s.f0xx.org.",
   "nav.console_desc": "Главная консоли и карточки разделов.",

index.php

@@ -150,6 +150,7 @@ function hub_h(string $s): string {
         <li><a href="issues/?view=live_sessions" class="nav-link" data-i18n-title="nav.live_sessions" title="Live sessions"><span class="nav-icon nav-icon--live"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.live_sessions">Live sessions</span><span class="nav-desc" data-i18n="nav.live_sessions_desc">Cast intents, join stats, session history.</span></span></a></li>
         <li><a href="issues/live/education" class="nav-link" data-i18n-title="nav.education" title="Education demo"><span class="nav-icon nav-icon--education"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.education">Education (demo)</span><span class="nav-desc" data-i18n="nav.education_desc">Browser screen-share trial (5 min).</span></span></a></li>
         <li><a href="issues/?view=remote_access" class="nav-link" data-i18n-title="nav.remote" title="Remote access"><span class="nav-icon nav-icon--remote"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.remote">Remote access</span><span class="nav-desc" data-i18n="nav.remote_desc">WireGuard sessions and device reachability.</span></span></a></li>
+        <li><a href="monitor/" class="nav-link" data-i18n-title="nav.monitor" title="Monitoring"><span class="nav-icon nav-icon--monitor"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.monitor">Monitoring</span><span class="nav-desc" data-i18n="nav.monitor_desc">Grafana dashboards — cluster health, alerts, exporters.</span></span></a></li>
         <li><a href="issues/?view=short_links" class="nav-link" data-i18n-title="nav.short_links" title="Short links"><span class="nav-icon nav-icon--link"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.short_links">Short links</span><span class="nav-desc" data-i18n="nav.short_links_desc">Mint bearer tokens and shorten URLs for s.f0xx.org.</span></span></a></li>
         <li><a href="build/" class="nav-link" data-i18n-title="nav.builder" title="Builder"><span class="nav-icon nav-icon--builder"></span><span class="nav-text"><span class="nav-label" data-i18n="nav.builder">Builder</span><span class="nav-desc" data-i18n="nav.builder_desc">Docker CI for APK baking and OTA artifacts.</span></span></a></li>
       </ul>