- Add SessionCoordinator regression test covering switch from an
  authenticated ABox profile to Local experience: remote session is
  logged out and cleared, only Local is the active/observable session,
  credentials are cleared, auto-login disabled, and gateway state stays
  isolated (verified to fail when switch cleanup is removed).
- Replace if/else provider dispatch with exhaustive when over
  ProviderType in all three routing gateways so future enum additions
  fail compilation.
- Silence the known ExperimentalCoroutinesApi opt-in warning in
  ProviderSelectionViewModelTest with a class-level @OptIn.

@@ -34,5 +34,5 @@
         loadingJob?.cancel()
         profile = value
         _uiState.value = LoginUiState()
         loadingJob = viewModelScope.launch {
             val preferences = profileStore.loginPreferences(value.id)

@@ -45,5 +45,5 @@
     actionInProgress: Boolean = false,
     onSwitchProvider: () -> Unit,
     viewModel: LoginViewModel = hiltViewModel(),
 ) {
     LaunchedEffect(profile.id) { viewModel.loadProfile(profile) }

@@ -30,5 +30,5 @@
     private var usernameEdited = false
     private var rememberUsernameEdited = false
     private var autoLoginEdited = false
 
     fun loadProfile(value: ProviderProfile) {

@@ -19,5 +19,5 @@
 
 class ProviderProfileStoreImpl(
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     override fun observeProfiles(): Flow<List<ProviderProfile>> = dataStore.data.map(::profilesFrom)

@@ -42,5 +42,5 @@
 
     override fun observeLoginPreferences(profileId: ProviderProfileId): Flow<LoginPreferences> =
         safeData.map { preferencesFrom(it, profileId) }
 
     override suspend fun profiles(): List<ProviderProfile> = profilesFrom(dataStore.data.first())

@@ -140,5 +140,5 @@
                     enabled = formEnabled,
                     singleLine = true,
                     modifier = Modifier.fillMaxWidth(),
                 )
                 OutlinedTextField(

@@ -43,5 +43,5 @@
     bootstrapError: String? = null,
     actionError: String? = null,
     actionInProgress: Boolean = false,
     onSwitchProvider: () -> Unit,
     viewModel: LoginViewModel = hiltViewModel(),

@@ -26,5 +26,5 @@
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     private val safeData: Flow<Preferences>
         get() = dataStore.data
             .retryWhen { cause, attempt ->

@@ -97,5 +97,5 @@
             stringPreferencesKey("profile_${profileId.value}_credential")
     }
 }
 
 private fun Throwable.isPermanentCredentialFailure(): Boolean = when (this) {

@@ -82,5 +82,5 @@
         require(data.available() == 0) { "Unexpected credential data" }
         LoginCredentials(Username(username), Password(password))
     }
 
     private suspend fun operation(block: suspend () -> Unit): DomainResult<Unit> = try {

@@ -25,5 +25,5 @@
 class ProviderProfileStoreImpl(
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     private val safeData: Flow<Preferences>
         get() = dataStore.data.retryWhen { cause, attempt ->

@@ -45,5 +45,5 @@
     private fun stateFor(
         profile: ProviderProfile?,
         session: Session?,
         bootstrapError: String?,
     ): AppSessionUiState = when {

@@ -38,5 +38,5 @@
         usernameEdited = false
         rememberUsernameEdited = false
         autoLoginEdited = false
         _uiState.value = LoginUiState(isLoadingPreferences = true)
         loadingJob = viewModelScope.launch {

@@ -76,5 +76,5 @@
             }
         }
     }
 
     fun clearSensitiveState() {

@@ -70,5 +70,5 @@
     }
 
     private fun encode(credentials: LoginCredentials): ByteArray = ByteArrayOutputStream().use { output ->
         DataOutputStream(output).use { data ->
             data.writeUTF(credentials.username.value)

@@ -30,5 +30,5 @@
         bootstrapResult,
         profileStore.observeActiveProfile(),
         coordinator.observeActiveSession(),
     ) { result, profile, session ->
         if (result == null) AppSessionUiState.Loading

@@ -44,3 +56,4 @@
+                )
             }
         }
     }

@@ -77,5 +77,5 @@
 private data class ProviderBootstrapResult(
     val profileId: ProviderProfileId?,
     val result: DomainResult<Session?>,
 ) {
     fun errorFor(currentProfileId: ProviderProfileId?): String? =

@@ -148,5 +148,5 @@
             }
         }
     }
 
     private fun DomainError.toUiMessage(): String = when (this) {

@@ -97,5 +97,5 @@
         bootstrapError: String?,
     ): AppSessionUiState = when {
         profile == null -> AppSessionUiState.ProviderSelection
         availability.forType(profile.type) is Availability.Disabled -> AppSessionUiState.ProviderSelection
         session != null -> AppSessionUiState.Authenticated(profile)

@@ -43,5 +43,5 @@
             DomainResult.Success(decode(cipher.decrypt(profileId, encrypted)))
         } catch (error: CancellationException) {
             throw error
         } catch (error: Exception) {
             if (error.isPermanentCredentialFailure()) {

@@ -50,5 +50,5 @@
     onSwitchProvider: () -> Unit,
     viewModel: LoginViewModel = hiltViewModel(),
 ) {
     LaunchedEffect(profile.id) { viewModel.loadProfile(profile) }
     DisposableEffect(profile.id) {

@@ -152,5 +152,5 @@
             booleanPreferencesKey("profile_${id.value}_auto_login")
     }
 }
 
 private fun Flow<Preferences>.catchIOExceptionAsEmpty(): Flow<Preferences> = catch { error ->

@@ -116,5 +116,5 @@
                 .padding(contentPadding),
             contentAlignment = Alignment.TopCenter,
         ) {
             Column(
                 modifier = Modifier

@@ -42,5 +42,5 @@
                 .fillMaxSize()
                 .padding(contentPadding),
             contentAlignment = Alignment.Center,
         ) {
             Column(

@@ -32,5 +32,5 @@
     private var usernameEdited = false
     private var rememberUsernameEdited = false
     private var autoLoginEdited = false
 
     fun loadProfile(value: ProviderProfile) {

@@ -24,5 +24,5 @@
 
 class ProviderProfileStoreImpl(
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     private val safeData: Flow<Preferences>

@@ -24,5 +24,5 @@
 
 class ProviderProfileStoreImpl(
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     private val safeData: Flow<Preferences>

@@ -24,5 +24,5 @@
 
 class ProviderProfileStoreImpl(
     private val dataStore: DataStore<Preferences>,
 ) : ProviderProfileStore {
     private val safeData: Flow<Preferences>

@@ -64,5 +64,5 @@
                 }
             } catch (error: kotlinx.coroutines.CancellationException) {
                 throw error
             } catch (error: Exception) {
                 bootstrapResult.value = ProviderBootstrapResult(

@@ -40,5 +40,5 @@
         }
     }
 
     companion object {
         private val PROFILES = listOf(

@@ -48,5 +48,5 @@
         dataStore: DataStore<Preferences>,
         cipher: CredentialCipher,
     ): CredentialStore = KeystoreCredentialStore(dataStore, cipher)
 
     @Provides

@@ -32,5 +32,5 @@
             )
         }
     }
 
     companion object {

@@ -40,5 +40,5 @@
 
         composeRule.onNodeWithText("ABox").assertIsEnabled()
         composeRule.onNodeWithText("Local experience").assertIsEnabled().performClick()
         assertEquals(local, selected)
         composeRule.onNodeWithText("Compatible backend").assertDoesNotExist()