Feature
- Add deep dark theme (#728)
- Add debounced search refresh for filtered views on new messages
Chore
- Make read/unread message state clearly distinguishable (WCAG AA)
- Add accessible names to icon-only buttons and fix sender tag mismatch
- Update Go dependencies
- Update node dependencies
- Update caniemail test database
- Update GitHub Actions
Fix
- Include all IANA special-use IPv4 ranges in IsInternalIP check
- Prevent SMTP command injection via drainData fragment-boundary bypass
- Validate Send API custom header keys per RFC 5322