fix: default station A grid, find all mutual passes, color toArgb()

- Pre-fill station A grid from settingsRepo.stationPosition
- Find ALL mutual passes per satellite (not just first)
- Fix Color.hashCode() -> Color.toArgb() for native canvas paint
- Use 2min gap between pass searches to avoid duplicates

app/src/main/java/com/rtbishop/look4sat/MainScreen.kt

@@ -205,7 +205,7 @@ fun MainScreen(navigateToRadar: () -> Unit = {}) {
                             MapDestination()
                         }
                         entry<Screen.Mutual> {
-                            val viewModel = MutualViewModel(container.satelliteRepo)
+                            val viewModel = MutualViewModel(container.satelliteRepo, container.settingsRepo)
                             MutualScreen(viewModel = viewModel)
                         }
                         entry<Screen.Settings> {