Multi-images (compose):
- Replace single imageUri with mediaItems: MediaItem[] (local | uploaded)
- allowsMultipleSelection: true, selectionLimit up to 4 total
- Each picked image is resized to max 1920px before upload
- Thumbnail row with individual × remove buttons
- uploaded badge (cloud icon) on library/prefill images
- buildMediaPayload() uploads local items, passes uploaded items as-is
Media Library:
- New MediaLibraryModal component — full-screen modal
- Fetches GET /media from Postiz instance
- 3-column grid with multi-select (capped at remaining slots)
- Selected items added to compose media pool
Notifications:
- Strip HTML from notification body text
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
