fix(android): preserve account-owned background uploads

androidApp/src/main/kotlin/dev/obiente/nextcloudnative/AndroidAccountCredentialController.kt

@@ -57,10 +57,10 @@ internal class AndroidAccountCredentialController(
         },
     )
 
-    fun accountRetentionSnapshot(): AndroidAccountRetentionSnapshot = readRegistryForCredentialLoad()
-        ?.let { registry -> AndroidAccountRetentionSnapshot.Available(registry.accounts) }
-        ?: AndroidAccountRetentionSnapshot.Unavailable
+    fun accountRetentionSnapshot(): AndroidAccountRetentionSnapshot =
+        readRegistryForCredentialLoad().asAccountRetentionSnapshot()
 
+    fun durableUploadAccountRegistry(): DurableUploadAccountRegistry = readCredentialFreeRegistry().asDurableRegistry()
     fun activeAccountId(): NextcloudAccountId? = readCredentialFreeRegistry()?.activeAccountId
 
     fun loadSession(accountId: NextcloudAccountId): NextcloudSession? =

androidApp/src/main/kotlin/dev/obiente/nextcloudnative/AndroidAccountCredentialRecovery.kt

@@ -290,6 +290,7 @@ internal fun resolveStoredAndroidAccountSession(
 
 internal const val ANDROID_ACCOUNT_SESSION_KEY = "encrypted_session"
 internal const val ANDROID_ACCOUNT_REGISTRY_KEY = "account_registry_v1"
+internal const val ANDROID_ACCOUNT_PREFERENCES_NAME = "nextcloud_native"
 internal const val ANDROID_ACCOUNT_CREDENTIAL_SLOT_KEY_PREFIX = "account_credential_v1:"
 internal const val ANDROID_QUARANTINED_SESSION_KEY = "encrypted_session_quarantine"
 internal const val ANDROID_PENDING_ACCOUNT_REMOVAL_CLEANUP_KEY = "pending_account_removal_cleanup_v2"

androidApp/src/main/kotlin/dev/obiente/nextcloudnative/AndroidAccountCredentialTransitions.kt

@@ -1,5 +1,7 @@
 package dev.obiente.nextcloudnative
 
+import android.content.SharedPreferences
+import dev.obiente.nextcloudnative.app.NextcloudAccountRegistry
 import dev.obiente.nextcloudnative.app.NextcloudSession
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.NonCancellable
@@ -9,6 +11,27 @@ internal fun removeActiveAndroidAccountCredentialState(
     state: AndroidAccountCredentialState,
 ): AndroidAccountCredentialState = state.registry.activeAccountId?.let(state::remove) ?: state
 
+internal fun NextcloudAccountRegistry?.asDurableRegistry(): DurableUploadAccountRegistry =
+    this?.let { registry -> DurableUploadAccountRegistry.Available(registry.accounts) }
+        ?: DurableUploadAccountRegistry.Unavailable
+
+internal fun NextcloudAccountRegistry?.asAccountRetentionSnapshot(): AndroidAccountRetentionSnapshot =
+    this?.let { registry -> AndroidAccountRetentionSnapshot.Available(registry.accounts) }
+        ?: AndroidAccountRetentionSnapshot.Unavailable
+
+internal fun SharedPreferences.durableUploadAccountResolutionAvailable(): Boolean =
+    durableUploadAccountResolutionAvailable {
+        getString(ANDROID_ACCOUNT_REGISTRY_KEY, null)
+    }
+
+internal fun durableUploadAccountResolutionAvailable(
+    readRegistry: () -> String?,
+): Boolean = try {
+    androidCredentialFreeRegistryAllowsAccountResolution(readRegistry())
+} catch (_: ClassCastException) {
+    false
+}
+
 internal suspend fun rollbackUnavailableAndroidAccountRemoval(
     active: Boolean = false,
     recovered: AndroidAccountCredentialState,