## Summary
- make mobile unread state visible with bold channel names, an animated
Inbox badge, and swipe-to-toggle Inbox rows
- add directional transitions for top-level mobile navigation
- let mobile send while media uploads, with cancellable progress UI
- normalize iOS and Android video uploads, attach poster frames, and
improve native video playback
## Validation
- `just mobile-check`
- `just mobile-test`
- `cargo test -p buzz-media`
- Pixel smoke test
- iPhone smoke test
Desktop background uploads moved to #4522 so the two platforms can be
reviewed independently.
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Signed-off-by: kenny lopez <klopez4212@gmail.com>
Signed-off-by: Tom Brow <tomb@block.xyz>
Co-authored-by: leader <71e9f2c44a6932b6772caaaccda1911d010463c3e2c6c40410b8329956046801@buzz.block.builderlab.xyz>
Co-authored-by: Tom Brow <tomb@block.xyz>
## What
- group uploaded photos into full-width message carousels
- add a fullscreen viewer with pinch zoom, double-tap reset, swipe-down
dismissal, a centered filmstrip, and image actions
- preload nearby display-sized images for smoother swiping and keep each
upload as its own avatar-backed message
## Validation
- `just mobile-check`
- `flutter test test/features/channels/message_content_test.dart`
- iOS 26.5 simulator gesture pass
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Signed-off-by: kenny lopez <klopez4212@gmail.com>