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- Add GitHub OAuth flow with /comfy/auth/github and /comfy/auth/callback - User allowlist via GITHUB_ALLOWED_USERS environment variable - CSRF protection with state parameter - Keep same dark mode login page design (saved screenshot) - Strip Origin header from proxied requests (fixes ComfyUI 403s) - Add manual CORS headers to proxy responses Env vars: GITHUB_CLIENT_ID, GITHUB_CLIENT_SECRET, GITHUB_ALLOWED_USERS Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>