GitHub OAuth & Profile Management

What’s New

• Added GitHub OAuth login with GET /auth/github and callback flow
• Added PATCH /auth/profile for name and email updates with re-verification
• Added GitHub account linking/unlinking for email-password users
• Added profile photo URL from GitHub avatar on OAuth login

Improvements

• Settings security tab shows GitHub connection status with connect/disconnect actions
• Sidebar profile area redesigned with richer card treatment and role metadata
• Navbar updated with cleaner glass header bar and refined breadcrumb typography
• Profile dropdown redesigned with two-layer layout and grouped actions

Fixes

• Fixed TikTok downloader rejecting valid URLs with whitespace
• Fixed TikTok host allowlist to accept vm.tiktok.com shortlinks
• Fixed SoundCloud DTO validation for on.soundcloud.com shortlinks
• Fixed Next.js prerender failure on /apps/settings with Suspense boundary