Move custom assets from /data/gitea/custom/public to /data/gitea/public
to properly serve custom themes and favicon/logo files. Gitea expects
custom public assets at /data/gitea/public, not nested under custom/.
- Restructured dev/custom/public/ to dev/public/
- Updated volume mount in dev/compose.yaml
- Includes 21 custom themes from sainnhe/gitea-themes
- Includes custom favicon and logo
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
