feat: refactor /me into admin-style layout with profile, security, recordings, analytics sub-pages

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/lib/i18n/locales/en.ts

@@ -91,6 +91,23 @@ export default {
   me: {
     title: "Dashboard",
     welcome: "Welcome back, {name}",
+    nav: {
+      profile: "Profile",
+      security: "Security",
+      recordings: "Recordings",
+      analytics: "Analytics",
+      back_to_site: "← Back to site",
+      back_mobile: "← Back",
+    },
+    analytics: {
+      title: "Analytics",
+      description: "Track your content performance and audience engagement",
+      total_videos: "Total Videos",
+      total_likes: "Total Likes",
+      total_plays: "Total Plays",
+      video_performance: "Video Performance",
+      video_performance_description: "Detailed metrics for each video",
+    },
     view_profile: "View Public Profile",
     settings: {
       title: "Settings",