Spårning: fixa fasbytet (stale state) + loggvisaren till inställningarna

- onLocationChanged skrev tillbaka ett gammalt state-snapshot och nollade
  SEARCHING→ACTIVE-övergången — klockan stod kvar på 00:00 trots fix
  (syntes som dubbla 'aktiverad'-rader i loggen). Nu utgår slutskrivningen
  från aktuellt state.
- Teknisk spårningslogg är nu en switch under Inställningar → Felsökning,
  av som standard. Version 0.8.2.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C2GA94E1f3cmrvdQLQhYdg

app/src/main/java/eu/brassepc/fitnessdroid/data/SettingsStore.kt

@@ -32,6 +32,8 @@ data class AppSettings(
     val birthYear: Int? = null,
     /** null = inte satt, false = man, true = kvinna */
     val isFemale: Boolean? = null,
+    /** Visa teknisk logg på spårskärmen (felsökning) */
+    val trackLogEnabled: Boolean = false,
 )
 
 class SettingsStore(private val context: Context) {
@@ -58,9 +60,14 @@ class SettingsStore(private val context: Context) {
             heightCm = prefs[KEY_HEIGHT_CM]?.toDoubleOrNull(),
             birthYear = prefs[KEY_BIRTH_YEAR],
             isFemale = prefs[KEY_IS_FEMALE]?.toBooleanStrictOrNull(),
+            trackLogEnabled = prefs[KEY_TRACK_LOG]?.toBooleanStrictOrNull() ?: false,
         )
     }
 
+    suspend fun setTrackLogEnabled(value: Boolean) {
+        context.settingsDataStore.edit { it[KEY_TRACK_LOG] = value.toString() }
+    }
+
     suspend fun setScale(address: String?, name: String?, driver: String?) {
         context.settingsDataStore.edit { prefs ->
             if (address == null) {
@@ -132,5 +139,6 @@ class SettingsStore(private val context: Context) {
         private val KEY_HEIGHT_CM = stringPreferencesKey("height_cm")
         private val KEY_BIRTH_YEAR = intPreferencesKey("birth_year")
         private val KEY_IS_FEMALE = stringPreferencesKey("is_female")
+        private val KEY_TRACK_LOG = stringPreferencesKey("track_log_enabled")
     }
 }

app/src/main/java/eu/brassepc/fitnessdroid/data/TrackingService.kt

@@ -251,10 +251,13 @@ class TrackingService : Service(), LocationListener {
         }
 
         lastLocation = location
-        _state.value = s.copy(
+        // Utgå från AKTUELLT state (inte snapshotet från funktionens start) —
+        // annars skrivs t.ex. fasbytet till ACTIVE över och klockan står still.
+        val cur = _state.value
+        _state.value = cur.copy(
             distanceMeters = distance,
             elevationGainMeters = elevGain,
-            points = s.points + (location.latitude to location.longitude),
+            points = cur.points + (location.latitude to location.longitude),
             currentSpeedKmh = if (location.hasSpeed()) location.speed * 3.6 else null,
             gpsFix = true,
         )

app/src/main/java/eu/brassepc/fitnessdroid/ui/settings/SettingsScreen.kt

@@ -71,6 +71,8 @@ class SettingsViewModel(
     fun addCustomBar(value: Double) = viewModelScope.launch { store.addCustomBarWeight(value) }
     fun removeCustomBar(value: Double) = viewModelScope.launch { store.removeCustomBarWeight(value) }
 
+    fun setTrackLog(value: Boolean) = viewModelScope.launch { store.setTrackLogEnabled(value) }
+
     fun setAutoRelogin(value: Boolean) = viewModelScope.launch {
         store.setAutoRelogin(value)
         // Stängs funktionen av slängs de sparade uppgifterna direkt.
@@ -145,6 +147,28 @@ fun SettingsScreen(
                 }
             }
 
+            SettingsCard(title = "Felsökning") {
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp, vertical = 6.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    Column(modifier = Modifier.weight(1f)) {
+                        Text("Teknisk spårningslogg", style = MaterialTheme.typography.bodyLarge)
+                        Text(
+                            "Visar GPS-loggen på aktivitetsskärmen (för felsökning).",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        )
+                    }
+                    androidx.compose.material3.Switch(
+                        checked = settings.trackLogEnabled,
+                        onCheckedChange = viewModel::setTrackLog,
+                    )
+                }
+            }
+
             SettingsCard(title = "Vilotimerns utseende") {
                 RadioRow(
                     label = "Helskärm",

app/src/main/java/eu/brassepc/fitnessdroid/ui/track/TrackScreen.kt

@@ -67,6 +67,7 @@ import eu.brassepc.fitnessdroid.ui.appContainer
 import eu.brassepc.fitnessdroid.ui.common.compact
 import eu.brassepc.fitnessdroid.ui.common.openAppSettings
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.osmdroid.config.Configuration
 import org.osmdroid.tileprovider.tilesource.TileSourceFactory
@@ -79,8 +80,11 @@ import java.time.Instant
 class TrackViewModel(
     private val gymApi: GymApi,
     private val repo: GymRepository,
+    settingsStore: eu.brassepc.fitnessdroid.data.SettingsStore,
 ) : ViewModel() {
     val tracking = TrackingService.state
+    /** Teknisk logg visas bara om den slagits på i inställningarna. */
+    val logEnabled = settingsStore.settings.map { it.trackLogEnabled }
     val message = MutableStateFlow<String?>(null)
     val saved = MutableStateFlow(false)
     /** Sammanfattningen som visas efter stopp (null = spårning pågår/ej startad) */
@@ -168,7 +172,7 @@ class TrackViewModel(
         val Factory: ViewModelProvider.Factory = viewModelFactory {
             initializer {
                 val c = appContainer()
-                TrackViewModel(c.gymApi, c.gymRepository)
+                TrackViewModel(c.gymApi, c.gymRepository, c.settingsStore)
             }
         }
     }
@@ -186,6 +190,7 @@ fun TrackScreen(
     val summary by viewModel.summary.collectAsStateWithLifecycle()
     val saved by viewModel.saved.collectAsStateWithLifecycle()
     val message by viewModel.message.collectAsStateWithLifecycle()
+    val logEnabled by viewModel.logEnabled.collectAsStateWithLifecycle(false)
 
     val pendingType by viewModel.pendingType.collectAsStateWithLifecycle()
     val typeLoadError by viewModel.typeLoadError.collectAsStateWithLifecycle()
@@ -276,6 +281,7 @@ fun TrackScreen(
                     message = message,
                     onSave = { rpe, overrideId -> viewModel.save(rpe, overrideId) },
                     onDone = onBack,
+                    showLog = logEnabled,
                 )
                 permissionDenied -> Column(
                     modifier = Modifier.padding(16.dp),
@@ -323,6 +329,7 @@ fun TrackScreen(
                     tracking = tracking,
                     onStop = { viewModel.stop(context) },
                     onStartAnyway = { TrackingService.startNow(context) },
+                    showLog = logEnabled,
                 )
             }
         }
@@ -334,6 +341,7 @@ private fun LiveContent(
     tracking: TrackingState,
     onStop: () -> Unit,
     onStartAnyway: () -> Unit,
+    showLog: Boolean,
 ) {
     Column(modifier = Modifier.fillMaxSize()) {
         if (tracking.isDistanceBased) {
@@ -424,7 +432,7 @@ private fun LiveContent(
                     Icon(Icons.Default.Stop, contentDescription = null)
                     Text("Avsluta aktiviteten", modifier = Modifier.padding(start = 6.dp))
                 }
-                TechLogSection()
+                if (showLog) TechLogSection()
             }
         }
     }
@@ -561,6 +569,7 @@ private fun SummaryContent(
     message: String?,
     onSave: (Double?, Int?) -> Unit,
     onDone: () -> Unit,
+    showLog: Boolean,
 ) {
     var rpe by remember { mutableStateOf(5f) }
 
@@ -635,7 +644,7 @@ private fun SummaryContent(
 
         message?.let { Text(it, color = MaterialTheme.colorScheme.error) }
 
-        TechLogSection()
+        if (showLog) TechLogSection()
 
         if (saved) {
             Text(