- Replace overview.js with dashboard.js using standard cbi-* classes
- Add api.js module for RPC declarations
- Show port, runtime, backend_running status in sites table
- Add sync_config, discover_vhosts, import_vhost RPC methods
- Update ACL with new method permissions
- Menu: Sites -> Dashboard
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
