diff --git a/android/app/src/main/java/com/hyzq/boss/BossApiClient.java b/android/app/src/main/java/com/hyzq/boss/BossApiClient.java
index 356708d..0c20a43 100644
--- a/android/app/src/main/java/com/hyzq/boss/BossApiClient.java
+++ b/android/app/src/main/java/com/hyzq/boss/BossApiClient.java
@@ -667,6 +667,10 @@ public class BossApiClient {
         connection.setDoInput(true);
         connection.setRequestProperty("Accept", "application/json");
         connection.setRequestProperty("x-boss-native-app", "1");
+        if ("GET".equals(method)) {
+            connection.setRequestProperty("Cache-Control", "no-cache, no-store, max-age=0");
+            connection.setRequestProperty("Pragma", "no-cache");
+        }
 
         String cookie = getSessionCookie();
         if (!cookie.isEmpty()) {
diff --git a/android/app/src/test/java/com/hyzq/boss/BossApiClientDispatchPlansTest.java b/android/app/src/test/java/com/hyzq/boss/BossApiClientDispatchPlansTest.java
index 624fae6..c0b587e 100644
--- a/android/app/src/test/java/com/hyzq/boss/BossApiClientDispatchPlansTest.java
+++ b/android/app/src/test/java/com/hyzq/boss/BossApiClientDispatchPlansTest.java
@@ -51,6 +51,8 @@ public class BossApiClientDispatchPlansTest {
         assertEquals("GET", connection.requestMethodValue);
         assertEquals(12000, connection.connectTimeoutValue);
         assertEquals(30000, connection.readTimeoutValue);
+        assertEquals("no-cache, no-store, max-age=0", connection.getRequestProperty("Cache-Control"));
+        assertEquals("no-cache", connection.getRequestProperty("Pragma"));
     }
 
     @Test
@@ -67,6 +69,18 @@ public class BossApiClientDispatchPlansTest {
         assertEquals(30000, connection.readTimeoutValue);
     }
 
+    @Test
+    public void getConversationHomeSendsNoCacheHeadersToAvoidStaleMobileFeed() throws Exception {
+        RecordingConnection connection = new RecordingConnection(new URL("https://boss.hyzq.net/api/v1/conversations/home"));
+        RecordingBossApiClient apiClient = new RecordingBossApiClient(connection);
+
+        BossApiClient.ApiResponse response = apiClient.getConversationHome();
+
+        assertEquals(200, response.statusCode);
+        assertEquals("no-cache, no-store, max-age=0", connection.getRequestProperty("Cache-Control"));
+        assertEquals("no-cache", connection.getRequestProperty("Pragma"));
+    }
+
     @Test
     public void confirmDispatchPlanWritesApprovedTargetProjectIds() throws Exception {
         RecordingConnection connection = new RecordingConnection(new URL("https://boss.hyzq.net/api/v1/projects/p1/dispatch-plans/plan-1/confirm"));
diff --git a/public/downloads/boss-android-latest.apk b/public/downloads/boss-android-latest.apk
index 5089bc9..fa9a242 100644
Binary files a/public/downloads/boss-android-latest.apk and b/public/downloads/boss-android-latest.apk differ
diff --git a/public/downloads/boss-android-latest.json b/public/downloads/boss-android-latest.json
index e37a1e1..004caa1 100644
--- a/public/downloads/boss-android-latest.json
+++ b/public/downloads/boss-android-latest.json
@@ -1,9 +1,9 @@
 {
   "fileName": "boss-android-v2.5.11-release.apk",
   "urlPath": "/api/v1/user/ota/package",
-  "sizeBytes": 3351549,
-  "updatedAt": "2026-04-06T05:25:05Z",
-  "sha256": "67a66ea104696d639d576738cdef4ef485efb76d12d63b1b138e59dab091ef00",
+  "sizeBytes": 3351826,
+  "updatedAt": "2026-04-07T05:34:00Z",
+  "sha256": "2ea5fd0b33304f04b3f8f0ba66ec8f3ff40e2e8699c1d989de71ba08c9ab7e77",
   "versionName": "2.5.11",
   "versionCode": 24,
   "buildFlavor": "release"
diff --git a/public/downloads/boss-android-v2.5.11-release.apk b/public/downloads/boss-android-v2.5.11-release.apk
index 5089bc9..fa9a242 100644
Binary files a/public/downloads/boss-android-v2.5.11-release.apk and b/public/downloads/boss-android-v2.5.11-release.apk differ
diff --git a/src/lib/boss-projections.ts b/src/lib/boss-projections.ts
index 31cf8cb..c244baf 100644
--- a/src/lib/boss-projections.ts
+++ b/src/lib/boss-projections.ts
@@ -180,6 +180,20 @@ export function formatTimestampLabel(value?: string, fallback = "刚刚") {
   return shanghaiDayFormatter.format(date);
 }
 
+const STALE_CONTEXT_SYNC_LABEL = "待同步";
+const STALE_CONTEXT_REPLY_THRESHOLD_MS = 7 * 24 * 60 * 60_000;
+
+function formatConversationLatestReplyLabel(value: string, hasVisibleContext: boolean) {
+  if (hasVisibleContext && value.includes("T")) {
+    const date = new Date(value);
+    const diff = Date.now() - date.getTime();
+    if (!Number.isNaN(date.getTime()) && diff >= STALE_CONTEXT_REPLY_THRESHOLD_MS) {
+      return STALE_CONTEXT_SYNC_LABEL;
+    }
+  }
+  return formatTimestampLabel(value);
+}
+
 function compareSnapshots(a: ThreadContextSnapshot, b: ThreadContextSnapshot) {
   if (a.mustFinishBeforeCompaction !== b.mustFinishBeforeCompaction) {
     return a.mustFinishBeforeCompaction ? -1 : 1;
@@ -386,7 +400,10 @@ function buildConversationItem(state: BossState, project: Project): Conversation
     topPinnedLabel,
     manualPinned: Boolean(project.pinned && !project.systemPinned),
     latestReplyAt: latestConversationActivityAt,
-    latestReplyLabel: formatTimestampLabel(latestConversationActivityAt),
+    latestReplyLabel: formatConversationLatestReplyLabel(
+      latestConversationActivityAt,
+      Boolean(topThread),
+    ),
     unreadCount: project.unreadCount,
     riskLevel: project.riskLevel,
     activeDeviceCount: devices.length,
diff --git a/tests/conversation-home-items.test.ts b/tests/conversation-home-items.test.ts
index bbba353..204787f 100644
--- a/tests/conversation-home-items.test.ts
+++ b/tests/conversation-home-items.test.ts
@@ -818,6 +818,43 @@ test("conversation items prefer latest observed codex activity over stale last m
   assert.equal(thread?.latestReplyLabel, formatTimestampLabel("2026-04-04T11:48:00+08:00"));
 });
 
+test("conversation items mark stale context-backed timestamps as waiting for sync", async () => {
+  await setup();
+  const state = await readState();
+  state.projects = state.projects.filter((project) => project.id === "master-agent");
+  state.projects.push({
+    ...buildImportedThreadProject(
+      "mac-studio",
+      "stale-context-project",
+      "Boss",
+      "boss",
+      "上下文老化线程",
+      "thread-stale",
+      "2026-03-25T10:58:00+08:00",
+    ),
+    preview: "老上下文还在挂着",
+    unreadCount: 1,
+  });
+  state.threadContextSnapshots.push(
+    buildThreadContextSnapshot(
+      "stale-context-project",
+      "thread-stale",
+      "上下文老化线程",
+      "watch",
+      false,
+      58,
+      "2026-03-25T10:58:00+08:00",
+      "mac-studio",
+    ),
+  );
+
+  const item = getConversationHomeItems(state).find((entry) => entry.projectId === "stale-context-project");
+
+  assert.ok(item, "expected stale context conversation");
+  assert.equal(item?.contextBudgetIndicator.visible, true);
+  assert.equal(item?.latestReplyLabel, "待同步");
+});
+
 test("default seeded conversations no longer expose Boss 移动控制台", async () => {
   await setup();
   const state = await readState();