Run the scroll tests at 411x891dp portrait (device-like layout) and add
a NavDisplay entryProvider scenario that composes MutualScreen the way
the app does, so the prefill scroll is exercised end-to-end.
MutualMatchPrefillScrollTest verifies the map grid-QSO Match prefill:
time-range card lands at the top after scrollToItem, default open stays
at station inputs, and the query auto-starts with grid+24h pre-filled.
Adds Robolectric + compose ui-test-junit4 to the mutual test classpath.
Port satlover.de dual-station pass matching feature:
- New feature/mutual module with mutual pass data model
- MutualViewModel: compute overlapping passes for two stations
- ElevationCurveChart: Canvas-based dual elevation curve with drag
- MutualScreen: input form + results with expandable cards
- Navigation: add Mutual tab to bottom navigation bar
- i18n: add Chinese/English strings for new feature
atsunatsu