Implements complete domain verification flow with:
- rel=me link verification service
- HTML fetching with security controls
- Rate limiting to prevent abuse
- Email validation utilities
- Authorization and verification API endpoints
- User-facing templates for authorization and verification flows
This completes Phase 2: Domain Verification as designed.
Tests:
- All Phase 2 unit tests passing
- Coverage: 85% overall
- Migration tests updated
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
