## Summary
- Hide the thread Latest control once the lazy tail is fully reached.
- Polish the mobile channel header and use native iOS liquid glass for
Back.
- Keep the two-line header aligned and safe at larger text sizes.
## Validation
- `just mobile-check`
- `flutter test` (1,553 tests)
- Signed iPhone build installed and launched
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Signed-off-by: kenny lopez <klopez4212@gmail.com>
Co-authored-by: Carl <3c4caeafb646d23867f1c4832e68211d77e2561946171625f75c3ce1a3f2670f@buzz.block.builderlab.xyz>
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