diff --git a/app/src/main/java/app/closer/ui/home/HomeViewModel.kt b/app/src/main/java/app/closer/ui/home/HomeViewModel.kt
index 0e4a8ced..bc0dcf76 100644
--- a/app/src/main/java/app/closer/ui/home/HomeViewModel.kt
+++ b/app/src/main/java/app/closer/ui/home/HomeViewModel.kt
@@ -198,7 +198,8 @@ class HomeViewModel @Inject constructor(
     private val dailyQuestionResolver: app.closer.domain.usecase.DailyQuestionResolver,
     private val dateMemoryDataSource: app.closer.data.remote.FirestoreDateMemoryDataSource,
     private val dateReflectionDataSource: app.closer.data.remote.FirestoreDateReflectionDataSource,
-    private val answerDataSource: FirestoreAnswerDataSource
+    private val answerDataSource: FirestoreAnswerDataSource,
+    private val backupManager: app.closer.data.backup.BackupManager
 ) : ViewModel() {
 
     private val _uiState = MutableStateFlow(HomeUiState())
@@ -273,6 +274,12 @@ class HomeViewModel @Inject constructor(
                 // stops showing a stale "your turn" and never offers a re-answer that the immutable
                 // secure/payload rule would reject (R23). Room-first → a no-op once Room is correct;
                 // the answers observer then recomputes the card.
+                // Opportunistic E2EE conversation backup (throttled + single-flighted inside the manager;
+                // no-op without a couple key). Keeps the device-durable backup fresh for restore.
+                if (couple != null) {
+                    launch { runCatching { backupManager.backupNow() } }
+                }
+
                 val dailyAnswerCoupleId = couple?.id
                 if (uid != null && dailyAnswerCoupleId != null && dailyQuestion != null) {
                     launch {