## Summary
- `flutter_html` 3.0 drops links silently when no `onLinkTap` is provided — clicking any link in an HTML email previously did nothing
- Add `onLinkTap` with `LaunchMode.externalApplication` to `_SafeHtml` in `EmailDetailScreen` and to the `Html` widget in `ThreadDetailScreen`
- Unsubscribe chip already used `externalApplication`; link taps now match
## Test plan
- [x] Existing widget tests pass unchanged
- [x] `task check-fast` green
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Summary
flutter_html3.0 drops links silently when noonLinkTapis provided — clicking any link in an HTML email previously did nothingonLinkTapwithLaunchMode.externalApplicationto_SafeHtmlinEmailDetailScreenand to theHtmlwidget inThreadDetailScreenexternalApplication; link taps now matchTest plan
task check-fastgreen🤖 Generated with Claude Code