- debounce admin searches to reduce API calls while typing
- apply 300ms debounce to alerts, audit, devices, posts
- allow clearing selected owner in device creation form
🐛 fix(admin): correct admin data and filters
- use invariant culture for CSV numeric report values
- align default report end date with UTC day boundary
- prevent duplicate owner row in device member list
- make user growth date filtering EF translatable
- clear report preset when user picks a custom date range
- send zero-valued admin filter parameters in API client
- add admin endpoints to create devices and update device settings
- expose device members and post detail for admin management
- add post filters by device, author, type, and date range
- add user growth, device uptime, and usage reports with CSV export
- improve admin layout with sticky header, user info, and logout
- add device and author search filters across admin pages
