feat(v1.8.0): IMPL_04 Backup Settings - Improved Progress Display

- Remove in-button spinner from SettingsButton and SettingsOutlinedButton
- Buttons keep text during loading and become disabled (enabled=false)
- Add BackupProgressCard component with LinearProgressIndicator + status text
- Add backupStatusText StateFlow in SettingsViewModel
- Add 3-phase status system: In Progress → Completion → Clear
- Show success completion status for 2 seconds ("Backup created!", etc.)
- Show error status for 3 seconds ("Backup failed", etc.)
- Status auto-clears after delay (no manual intervention needed)
- Update createBackup() with completion delay and status messages
- Update restoreFromFile() with completion delay and status messages
- Update restoreFromServer() with completion delay and status messages
- Remove all redundant toast messages from backup/restore operations
- Add exception logging (Logger.e) to replace swallowed exceptions
- Integrate BackupProgressCard in BackupSettingsScreen (visible during operations)
- Add delayed restore execution (200ms) to ensure dialog closes before progress shows
- Add DIALOG_CLOSE_DELAY_MS constant (200ms)
- Add STATUS_CLEAR_DELAY_SUCCESS_MS constant (2000ms)
- Add STATUS_CLEAR_DELAY_ERROR_MS constant (3000ms)
- Add 6 new backup completion/error strings (EN + DE)
- Import kotlinx.coroutines.delay for status delay functionality

android/app/src/main/java/dev/dettmer/simplenotes/ui/settings/SettingsViewModel.kt

@@ -14,6 +14,7 @@ import dev.dettmer.simplenotes.sync.WebDavSyncService
 import dev.dettmer.simplenotes.utils.Constants
 import dev.dettmer.simplenotes.utils.Logger
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharedFlow
@@ -40,6 +41,8 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     companion object {
         private const val TAG = "SettingsViewModel"
         private const val CONNECTION_TIMEOUT_MS = 3000
+        private const val STATUS_CLEAR_DELAY_SUCCESS_MS = 2000L  // 2s for successful operations
+        private const val STATUS_CLEAR_DELAY_ERROR_MS = 3000L    // 3s for errors (more important)
     }
     
     private val prefs = application.getSharedPreferences(Constants.PREFS_NAME, Context.MODE_PRIVATE)
@@ -211,6 +214,10 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     private val _isBackupInProgress = MutableStateFlow(false)
     val isBackupInProgress: StateFlow<Boolean> = _isBackupInProgress.asStateFlow()
     
+    // v1.8.0: Descriptive backup status text
+    private val _backupStatusText = MutableStateFlow("")
+    val backupStatusText: StateFlow<String> = _backupStatusText.asStateFlow()
+    
     private val _showToast = MutableSharedFlow<String>()
     val showToast: SharedFlow<String> = _showToast.asSharedFlow()
     
@@ -671,18 +678,27 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     fun createBackup(uri: Uri, password: String? = null) {
         viewModelScope.launch {
             _isBackupInProgress.value = true
+            _backupStatusText.value = getString(R.string.backup_progress_creating)
             try {
                 val result = backupManager.createBackup(uri, password)
-                val message = if (result.success) {
+                
-                    getString(R.string.toast_backup_success, result.message ?: "")
+                // Phase 2: Show completion status
+                _backupStatusText.value = if (result.success) {
+                    getString(R.string.backup_progress_complete)
                 } else {
-                    getString(R.string.toast_backup_failed, result.error ?: "")
+                    getString(R.string.backup_progress_failed)
                 }
-                emitToast(message)
+                
+                // Phase 3: Clear after delay
+                delay(if (result.success) STATUS_CLEAR_DELAY_SUCCESS_MS else STATUS_CLEAR_DELAY_ERROR_MS)
+                
             } catch (e: Exception) {
-                emitToast(getString(R.string.toast_backup_failed, e.message ?: ""))
+                Logger.e(TAG, "Failed to create backup", e)
+                _backupStatusText.value = getString(R.string.backup_progress_failed)
+                delay(STATUS_CLEAR_DELAY_ERROR_MS)
             } finally {
                 _isBackupInProgress.value = false
+                _backupStatusText.value = ""
             }
         }
     }
@@ -690,18 +706,27 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     fun restoreFromFile(uri: Uri, mode: RestoreMode, password: String? = null) {
         viewModelScope.launch {
             _isBackupInProgress.value = true
+            _backupStatusText.value = getString(R.string.backup_progress_restoring)
             try {
                 val result = backupManager.restoreBackup(uri, mode, password)
-                val message = if (result.success) {
+                
-                    getString(R.string.toast_restore_success, result.importedNotes)
+                // Phase 2: Show completion status
+                _backupStatusText.value = if (result.success) {
+                    getString(R.string.restore_progress_complete)
                 } else {
-                    getString(R.string.toast_restore_failed, result.error ?: "")
+                    getString(R.string.restore_progress_failed)
                 }
-                emitToast(message)
+                
+                // Phase 3: Clear after delay
+                delay(if (result.success) STATUS_CLEAR_DELAY_SUCCESS_MS else STATUS_CLEAR_DELAY_ERROR_MS)
+                
             } catch (e: Exception) {
-                emitToast(getString(R.string.toast_restore_failed, e.message ?: ""))
+                Logger.e(TAG, "Failed to restore backup from file", e)
+                _backupStatusText.value = getString(R.string.restore_progress_failed)
+                delay(STATUS_CLEAR_DELAY_ERROR_MS)
             } finally {
                 _isBackupInProgress.value = false
+                _backupStatusText.value = ""
             }
         }
     }
@@ -732,22 +757,30 @@ class SettingsViewModel(application: Application) : AndroidViewModel(application
     fun restoreFromServer(mode: RestoreMode) {
         viewModelScope.launch {
             _isBackupInProgress.value = true
+            _backupStatusText.value = getString(R.string.backup_progress_restoring_server)
             try {
-                emitToast(getString(R.string.restore_progress))
                 val syncService = WebDavSyncService(getApplication())
                 val result = withContext(Dispatchers.IO) {
                     syncService.restoreFromServer(mode)
                 }
-                val message = if (result.isSuccess) {
+                
-                    getString(R.string.toast_restore_success, result.restoredCount)
+                // Phase 2: Show completion status
+                _backupStatusText.value = if (result.isSuccess) {
+                    getString(R.string.restore_server_progress_complete)
                 } else {
-                    getString(R.string.toast_restore_failed, result.errorMessage ?: "")
+                    getString(R.string.restore_server_progress_failed)
                 }
-                emitToast(message)
+                
+                // Phase 3: Clear after delay
+                delay(if (result.isSuccess) STATUS_CLEAR_DELAY_SUCCESS_MS else STATUS_CLEAR_DELAY_ERROR_MS)
+                
             } catch (e: Exception) {
-                emitToast(getString(R.string.toast_error, e.message ?: ""))
+                Logger.e(TAG, "Failed to restore from server", e)
+                _backupStatusText.value = getString(R.string.restore_server_progress_failed)
+                delay(STATUS_CLEAR_DELAY_ERROR_MS)
             } finally {
                 _isBackupInProgress.value = false
+                _backupStatusText.value = ""
             }
         }
     }

android/app/src/main/java/dev/dettmer/simplenotes/ui/settings/components/SettingsComponents.kt

@@ -1,9 +1,13 @@
 package dev.dettmer.simplenotes.ui.settings.components
 
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.CircularProgressIndicator
@@ -11,12 +15,14 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 
 /**
  * Primary filled button for settings actions
  * v1.5.0: Jetpack Compose Settings Redesign
+ * v1.8.0: Button keeps text during loading, just becomes disabled
  */
 @Composable
 fun SettingsButton(
@@ -31,20 +37,13 @@ fun SettingsButton(
         enabled = enabled && !isLoading,
         modifier = modifier.fillMaxWidth()
     ) {
-        if (isLoading) {
-            CircularProgressIndicator(
-                modifier = Modifier.height(20.dp),
-                strokeWidth = 2.dp,
-                color = MaterialTheme.colorScheme.onPrimary
-            )
-        } else {
         Text(text)
     }
 }
-}
 
 /**
  * Outlined secondary button for settings actions
+ * v1.8.0: Button keeps text during loading, just becomes disabled
  */
 @Composable
 fun SettingsOutlinedButton(
@@ -59,17 +58,9 @@ fun SettingsOutlinedButton(
         enabled = enabled && !isLoading,
         modifier = modifier.fillMaxWidth()
     ) {
-        if (isLoading) {
-            CircularProgressIndicator(
-                modifier = Modifier.height(20.dp),
-                strokeWidth = 2.dp,
-                color = MaterialTheme.colorScheme.primary
-            )
-        } else {
         Text(text)
     }
 }
-}
 
 /**
  * Danger/destructive button for settings actions
@@ -159,3 +150,48 @@ fun SettingsDivider(
     )
     Spacer(modifier = Modifier.height(8.dp))
 }
+
+/**
+ * v1.8.0: Backup progress indicator shown above buttons
+ * Replaces the ugly in-button spinner with a clear status display
+ */
+@Composable
+fun BackupProgressCard(
+    statusText: String,
+    modifier: Modifier = Modifier
+) {
+    androidx.compose.material3.Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 8.dp),
+        colors = androidx.compose.material3.CardDefaults.cardColors(
+            containerColor = MaterialTheme.colorScheme.primaryContainer
+        )
+    ) {
+        Column(
+            modifier = Modifier.padding(16.dp)
+        ) {
+            Row(
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                CircularProgressIndicator(
+                    modifier = Modifier.size(18.dp),
+                    strokeWidth = 2.dp,
+                    color = MaterialTheme.colorScheme.onPrimaryContainer
+                )
+                Spacer(modifier = Modifier.width(12.dp))
+                Text(
+                    text = statusText,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onPrimaryContainer
+                )
+            }
+            Spacer(modifier = Modifier.height(8.dp))
+            androidx.compose.material3.LinearProgressIndicator(
+                modifier = Modifier.fillMaxWidth(),
+                color = MaterialTheme.colorScheme.primary,
+                trackColor = MaterialTheme.colorScheme.primaryContainer
+            )
+        }
+    }
+}

android/app/src/main/java/dev/dettmer/simplenotes/ui/settings/screens/BackupSettingsScreen.kt

@@ -15,6 +15,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -27,6 +28,7 @@ import dev.dettmer.simplenotes.R
 import dev.dettmer.simplenotes.backup.RestoreMode
 import dev.dettmer.simplenotes.ui.settings.SettingsViewModel
 import dev.dettmer.simplenotes.ui.settings.components.BackupPasswordDialog
+import dev.dettmer.simplenotes.ui.settings.components.BackupProgressCard
 import dev.dettmer.simplenotes.ui.settings.components.RadioOption
 import dev.dettmer.simplenotes.ui.settings.components.SettingsButton
 import dev.dettmer.simplenotes.ui.settings.components.SettingsDivider
@@ -39,6 +41,10 @@ import dev.dettmer.simplenotes.ui.settings.components.SettingsSwitch
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale
+import kotlinx.coroutines.delay
+
+// v1.8.0: Delay for dialog close animation before starting restore
+private const val DIALOG_CLOSE_DELAY_MS = 200L
 
 /**
  * Backup and restore settings screen
@@ -60,6 +66,10 @@ fun BackupSettingsScreen(
     var pendingRestoreUri by remember { mutableStateOf<Uri?>(null) }
     var selectedRestoreMode by remember { mutableStateOf(RestoreMode.MERGE) }
     
+    // v1.8.0: Trigger for delayed restore execution (after dialog closes)
+    var triggerRestore by remember { mutableStateOf(0) }
+    var pendingRestoreAction by remember { mutableStateOf<(() -> Unit)?>(null) }
+    
     // 🔐 v1.7.0: Encryption state
     var encryptBackup by remember { mutableStateOf(false) }
     var showEncryptionPasswordDialog by remember { mutableStateOf(false) }
@@ -91,6 +101,15 @@ fun BackupSettingsScreen(
         }
     }
     
+    // v1.8.0: Delayed restore execution after dialog closes
+    LaunchedEffect(triggerRestore) {
+        if (triggerRestore > 0) {
+            delay(DIALOG_CLOSE_DELAY_MS) // Wait for dialog close animation
+            pendingRestoreAction?.invoke()
+            pendingRestoreAction = null
+        }
+    }
+    
     SettingsScaffold(
         title = stringResource(R.string.backup_settings_title),
         onBack = onBack
@@ -108,6 +127,16 @@ fun BackupSettingsScreen(
                 text = stringResource(R.string.backup_auto_info)
             )
             
+            // v1.8.0: Progress indicator (visible during backup/restore)
+            if (isBackupInProgress) {
+                val backupStatus by viewModel.backupStatusText.collectAsState()
+                BackupProgressCard(
+                    statusText = backupStatus.ifEmpty { 
+                        stringResource(R.string.backup_progress_creating) 
+                    }
+                )
+            }
+            
             Spacer(modifier = Modifier.height(16.dp))
             
             // Local Backup Section
@@ -234,6 +263,8 @@ fun BackupSettingsScreen(
                 when (restoreSource) {
                     RestoreSource.LocalFile -> {
                         pendingRestoreUri?.let { uri ->
+                            // v1.8.0: Schedule restore with delay for dialog close
+                            pendingRestoreAction = {
                                 // 🔐 v1.7.0: Check if backup is encrypted
                                 viewModel.checkBackupEncryption(
                                     uri = uri,
@@ -246,10 +277,16 @@ fun BackupSettingsScreen(
                                     }
                                 )
                             }
+                            triggerRestore++
+                        }
                     }
                     RestoreSource.Server -> {
+                        // v1.8.0: Schedule restore with delay for dialog close
+                        pendingRestoreAction = {
                             viewModel.restoreFromServer(selectedRestoreMode)
                         }
+                        triggerRestore++
+                    }
                 }
             },
             onDismiss = {

android/app/src/main/res/values-de/strings.xml

@@ -443,6 +443,21 @@
     <string name="about_changelog_title">Changelog</string>
     <string name="about_changelog_subtitle">Vollständige Versionshistorie</string>
     
+    <!-- v1.8.0: Backup Progress -->
+    <string name="backup_progress_creating">Backup wird erstellt…</string>
+    <string name="backup_progress_restoring">Backup wird wiederhergestellt…</string>
+    <string name="backup_progress_restoring_server">Notizen werden vom Server heruntergeladen…</string>
+    
+    <!-- v1.8.0: Backup Progress - Completion -->
+    <string name="backup_progress_complete">Backup erstellt!</string>
+    <string name="restore_progress_complete">Wiederherstellung abgeschlossen!</string>
+    <string name="restore_server_progress_complete">Download abgeschlossen!</string>
+    
+    <!-- v1.8.0: Backup Progress - Error -->
+    <string name="backup_progress_failed">Backup fehlgeschlagen</string>
+    <string name="restore_progress_failed">Wiederherstellung fehlgeschlagen</string>
+    <string name="restore_server_progress_failed">Download fehlgeschlagen</string>
+    
     <string name="about_privacy_title">🔒 Datenschutz</string>
     <string name="about_privacy_text">Diese App sammelt keine Daten. Alle Notizen werden nur lokal auf deinem Gerät und auf deinem eigenen WebDAV-Server gespeichert. Keine Telemetrie, keine Werbung.</string>
     

android/app/src/main/res/values/strings.xml

@@ -443,6 +443,21 @@
     <string name="about_changelog_title">Changelog</string>
     <string name="about_changelog_subtitle">Full version history</string>
     
+    <!-- v1.8.0: Backup Progress -->
+    <string name="backup_progress_creating">Creating backup…</string>
+    <string name="backup_progress_restoring">Restoring backup…</string>
+    <string name="backup_progress_restoring_server">Downloading notes from server…</string>
+    
+    <!-- v1.8.0: Backup Progress - Completion -->
+    <string name="backup_progress_complete">Backup created!</string>
+    <string name="restore_progress_complete">Restore complete!</string>
+    <string name="restore_server_progress_complete">Download complete!</string>
+    
+    <!-- v1.8.0: Backup Progress - Error -->
+    <string name="backup_progress_failed">Backup failed</string>
+    <string name="restore_progress_failed">Restore failed</string>
+    <string name="restore_server_progress_failed">Download failed</string>
+    
     <string name="about_privacy_title">🔒 Privacy</string>
     <string name="about_privacy_text">This app collects no data. All notes are stored only locally on your device and on your own WebDAV server. No telemetry, no ads.</string>