RecipientPicker (заявления):
- Added pagination support to load ALL users (not just first page)
- Added avatar images from media URLs instead of base64
- Falls back to initials when no avatar available
- Loads users in batches of 100 per page
RecipientPickerHandler (чаты):
- Added pagination support for full user list
- Keeps existing avatar display logic
- Loads 100 users per page when not searching
- Limits to 20 results when searching
CSS improvements:
- Added styles for avatar images (.user-avatar-img)
- Added placeholder styles for initials
- Proper object-fit and border-radius for avatars