Added consistent pass selection to Radar and Map screens

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SatelliteRepo.kt

@@ -52,6 +52,13 @@ class SatelliteRepo(
     private val _satellites = MutableStateFlow<List<OrbitalObject>>(emptyList())
     override val satellites: StateFlow<List<OrbitalObject>> = _satellites
 
+    private val _selectedPass = MutableStateFlow(0 to 0L)
+    override val selectedPass: StateFlow<Pair<Int, Long>> = _selectedPass
+
+    override fun selectPass(catNum: Int, aosTime: Long) {
+        _selectedPass.value = catNum to aosTime
+    }
+
     override suspend fun getRadiosWithId(id: Int) = localStorage.getRadiosWithId(id)
 
     override suspend fun initRepository() = withContext(dispatcher) {

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/repository/ISatelliteRepo.kt

@@ -34,6 +34,12 @@ interface ISatelliteRepo {
     /** Whether the repo is currently calculating passes. */
     val isCalculating: StateFlow<Boolean>
 
+    /** Currently selected pass (catNum + aosTime), persisted across screen navigations. */
+    val selectedPass: StateFlow<Pair<Int, Long>>
+
+    /** Set the currently selected pass. */
+    fun selectPass(catNum: Int, aosTime: Long)
+
     /** Load satellite objects from DB based on the current selection. */
     suspend fun initRepository()
 

core/presentation/src/main/java/com/rtbishop/look4sat/core/presentation/Navigation.kt

@@ -30,10 +30,10 @@ sealed class Screen(val iconResId: Int, val titleResId: Int) : NavKey {
     data object Passes : Screen(R.drawable.ic_passes, R.string.nav_pass)
 
     @Serializable
-    data class Radar(val catNum: Int = 0, val aosTime: Long = 0L) : Screen(R.drawable.ic_radar, R.string.nav_radar)
+    data object Radar : Screen(R.drawable.ic_radar, R.string.nav_radar)
 
     @Serializable
-    data class RadioControl(val catNum: Int = 0, val aosTime: Long = 0L) : Screen(0, 0)
+    data object RadioControl : Screen(0, 0)
 
     @Serializable
     data object Map : Screen(R.drawable.ic_map, R.string.nav_map)