feat(i18n): Implement internationalization for Channels, Skills, Setup, and Models pages

src/i18n/locales/en/dashboard.json

@@ -9,6 +9,10 @@
     "enabledOf": "{{enabled}} of {{total}} enabled",
     "sinceRestart": "Since last restart",
     "gatewayNotRunning": "Gateway not running",
+    "models": {
+        "title": "Models",
+        "subtitle": "Manage your AI providers and monitor token usage."
+    },
     "quickActions": {
         "title": "Quick Actions",
         "description": "Common tasks and shortcuts",
@@ -53,4 +57,4 @@
         "cacheWrite": "Cache write {{value}}",
         "cost": "Cost ${{amount}}"
     }
-}
+}