- Introduced `mesh_ui.dart` with reusable widgets including SectionHeader, MeshCard, StatusChip, StatTile, AvatarCircle, SignalBars, RouteChip, PulseDot, BottomSheetHeader, ErrorRetryCard, and ListEntrance.
- Implemented `path_map_ui.dart` for path map screens, featuring path distance calculations, playback controls, and a summary list of observed paths.
- Created `themed_map_tile_layer.dart` for shared cached map tiles with automatic dark-mode treatment.
formats all dart files using `dart format .` from the root project dir
this makes the code style repeatable by new contributors and makes PR review easier
- Implemented ChatScrollController to manage scroll behavior and visibility of jump-to-bottom button.
- Added functionality to automatically scroll to the bottom when the keyboard opens.
- Created JumpToBottomButton widget that appears when the user scrolls up, allowing quick navigation back to the bottom of the chat.