From 4b9668fdc576c635d99693813191e7dd006f3d82 Mon Sep 17 00:00:00 2001
From: Hao19911125 <99091644+Hao19911125@users.noreply.github.com>
Date: Sun, 12 Apr 2026 15:09:11 +0800
Subject: [PATCH] Clear restored backup dirty history markers

---
 sync/bme-sync.js         |  4 ++++
 tests/indexeddb-sync.mjs | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/sync/bme-sync.js b/sync/bme-sync.js
index ff915cf..31451b2 100644
--- a/sync/bme-sync.js
+++ b/sync/bme-sync.js
@@ -1120,6 +1120,10 @@ function markManualBackupHistoryForLocalRebind(snapshot = {}, chatId = "") {
   historyState.processedMessageHashesNeedRefresh =
     Number.isFinite(lastProcessedAssistantFloor) &&
     lastProcessedAssistantFloor >= 0;
+  historyState.historyDirtyFrom = null;
+  historyState.lastMutationReason = "";
+  historyState.lastMutationSource = "";
+  historyState.lastRecoveryResult = null;
   meta[RUNTIME_HISTORY_META_KEY] = historyState;
 
   return {
diff --git a/tests/indexeddb-sync.mjs b/tests/indexeddb-sync.mjs
index dc36c20..57adf28 100644
--- a/tests/indexeddb-sync.mjs
+++ b/tests/indexeddb-sync.mjs
@@ -632,6 +632,13 @@ async function testManualBackupAndRestoreFlow() {
           4: "hash-4",
         },
         processedMessageHashesNeedRefresh: false,
+        historyDirtyFrom: 2,
+        lastMutationReason: "hash-recheck",
+        lastMutationSource: "event:message-received",
+        lastRecoveryResult: {
+          status: "pending",
+          fromFloor: 2,
+        },
       },
       runtimeBatchJournal: [
         { id: "journal-1", processedRange: [0, 0], createdAt: 11 },
@@ -757,6 +764,10 @@ async function testManualBackupAndRestoreFlow() {
     db.snapshot.meta.runtimeHistoryState.lastProcessedAssistantFloor,
     4,
   );
+  assert.equal(db.snapshot.meta.runtimeHistoryState.historyDirtyFrom, null);
+  assert.equal(db.snapshot.meta.runtimeHistoryState.lastMutationReason, "");
+  assert.equal(db.snapshot.meta.runtimeHistoryState.lastMutationSource, "");
+  assert.equal(db.snapshot.meta.runtimeHistoryState.lastRecoveryResult, null);
   assert.ok(Number(db.meta.get("lastBackupRestoredAt")) > 0);
   const safetyStatus = await getRestoreSafetySnapshotStatus(
     "chat-backup-flow",