feat: avatar upload, connected accounts, round navbar avatar, Vercel analytics

- Avatar upload to Supabase Storage with pencil overlay in settings
- Show username initials as avatar fallback (instead of name initials)
- Round avatar in navbar (rounded-full with natural shadow)
- Connected Accounts section in settings showing Google status
- Connect Google directly from settings without signing out
- Add Vercel Analytics, Speed Insights, and Toolbar
- Update page title to "Pascal Editor"

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/editor/package.json

@@ -33,6 +33,9 @@
     "@supabase/supabase-js": "^2.95.3",
     "@tailwindcss/postcss": "^4.1.18",
     "@types/three": "^0.182.0",
+    "@vercel/analytics": "^1.6.1",
+    "@vercel/speed-insights": "^1.3.1",
+    "@vercel/toolbar": "^0.2.2",
     "better-auth": "^1.4.18",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",