- Add checkbox column and Site column to FleetTable
- Site names link to /tenants/{tenantId}/sites/{siteId}
- Multi-select checkboxes with select-all in header
- Bulk assign action bar with "Assign to site" dialog
- Device detail page includes site selector dropdown with assign/unassign
- Viewers see site name text, operators get a Select dropdown
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>