*: Content warnings, repost profile nav, consistent loading indicators
- Add post-level label support and content warning cards that hide
sensitive content behind a Show/Hide toggle for porn, sexual, nudity,
graphic-media, and gore labels
- Tapping "Reposted by" navigates to the reposter's profile
- Hide repost reason and labels in compose reply preview
- Pass postTextSize to compose view reply preview
- Back gesture/button dismisses compose bottom sheet
- Replace CircularProgressIndicator with CircularWavyProgressIndicator
in ProfileView and SearchView for consistent M3 expressive loading
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>