diff --git a/android/app/src/main/java/com/hyzq/boss/MainActivity.java b/android/app/src/main/java/com/hyzq/boss/MainActivity.java
index e940947..4ebd811 100644
--- a/android/app/src/main/java/com/hyzq/boss/MainActivity.java
+++ b/android/app/src/main/java/com/hyzq/boss/MainActivity.java
@@ -592,7 +592,7 @@ public class MainActivity extends AppCompatActivity {
 
     private boolean shouldRefreshConversationsTab(BossRealtimeEvent event) {
         if ("conversation.context_indicator.updated".equals(event.eventName)) {
-            return true;
+            return false;
         }
         if ("conversation.updated".equals(event.eventName)) {
             return hasProjectId(event) || hasDeviceId(event);
diff --git a/docs/superpowers/plans/2026-04-10-android-realtime-noise-reduction.md b/docs/superpowers/plans/2026-04-10-android-realtime-noise-reduction.md
new file mode 100644
index 0000000..714d0f2
--- /dev/null
+++ b/docs/superpowers/plans/2026-04-10-android-realtime-noise-reduction.md
@@ -0,0 +1,138 @@
+# Android Realtime Noise Reduction Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Reduce Android realtime stutter by suppressing heartbeat-only conversation refresh events and avoiding full reloads from initial SSE context snapshots.
+
+**Architecture:** Keep the existing SSE endpoint and Android `BossRealtimeClient`. Narrow event production in `upsertDeviceHeartbeat` and narrow Android root-page event consumption in `MainActivity`.
+
+**Tech Stack:** Next.js App Router backend, TypeScript `node:test`, Android Java native client, Server-Sent Events.
+
+---
+
+### Task 1: Lock Heartbeat Event Contract
+
+**Files:**
+- Create: `tests/device-heartbeat-event-noise.test.ts`
+- Modify: `src/lib/boss-data.ts`
+
+- [ ] **Step 1: Write the failing unchanged-heartbeat test**
+
+```ts
+assert.deepEqual(events.map((event) => event.event), ["devices.updated"]);
+```
+
+- [ ] **Step 2: Run the test and verify it fails**
+
+Run: `npx tsx --test tests/device-heartbeat-event-noise.test.ts`
+
+Expected: unchanged heartbeat currently emits both `devices.updated` and `conversation.updated`.
+
+- [ ] **Step 3: Suppress unchanged heartbeat conversation refreshes**
+
+Track whether heartbeat import/candidate state actually changes the conversation drawer. Always publish `devices.updated`; publish `conversation.updated` only when the drawer changes.
+
+- [ ] **Step 4: Run the focused test and verify it passes**
+
+Run: `npx tsx --test tests/device-heartbeat-event-noise.test.ts`
+
+Expected: unchanged heartbeat emits only `devices.updated`.
+
+### Task 2: Keep Import Changes Visible
+
+**Files:**
+- Modify: `tests/device-heartbeat-event-noise.test.ts`
+- Modify: `src/lib/boss-data.ts`
+
+- [ ] **Step 1: Write the changed-candidates test**
+
+```ts
+assert.deepEqual(
+  events.map((event) => [event.event, event.payload.deviceId, event.payload.note]),
+  [
+    ["devices.updated", "noise-device-b", undefined],
+    ["conversation.updated", "noise-device-b", "device_import.updated"],
+  ],
+);
+```
+
+- [ ] **Step 2: Run the test and verify it fails**
+
+Run: `npx tsx --test tests/device-heartbeat-event-noise.test.ts`
+
+Expected: the event exists before the fix but is too broad and lacks the `device_import.updated` marker.
+
+- [ ] **Step 3: Publish a marked conversation event only for import changes**
+
+Use `note: "device_import.updated"` on the conditional `conversation.updated` heartbeat event.
+
+- [ ] **Step 4: Run the focused test and verify it passes**
+
+Run: `npx tsx --test tests/device-heartbeat-event-noise.test.ts`
+
+Expected: changed candidates publish one marked conversation refresh event.
+
+### Task 3: Avoid Android Initial Snapshot Full Reloads
+
+**Files:**
+- Create: `tests/android-root-realtime-noise.test.ts`
+- Modify: `android/app/src/main/java/com/hyzq/boss/MainActivity.java`
+
+- [ ] **Step 1: Write the failing Android static test**
+
+```ts
+assert.doesNotMatch(
+  source,
+  /"conversation\.context_indicator\.updated"[\s\S]{0,120}return true;/,
+);
+```
+
+- [ ] **Step 2: Run the test and verify it fails**
+
+Run: `npx tsx --test tests/android-root-realtime-noise.test.ts`
+
+Expected: `MainActivity` currently returns `true` for the context snapshot event.
+
+- [ ] **Step 3: Ignore context snapshot as a full reload trigger**
+
+Change the context snapshot branch to return `false` in `shouldRefreshConversationsTab`.
+
+- [ ] **Step 4: Run the focused test and verify it passes**
+
+Run: `npx tsx --test tests/android-root-realtime-noise.test.ts`
+
+Expected: Android root no longer treats initial snapshot events as full reload triggers.
+
+### Task 4: Verify And Ship
+
+**Files:**
+- Verify: `src/lib/boss-data.ts`
+- Verify: `android/app/src/main/java/com/hyzq/boss/MainActivity.java`
+- Verify: `tests/device-heartbeat-event-noise.test.ts`
+- Verify: `tests/android-root-realtime-noise.test.ts`
+
+- [ ] **Step 1: Run realtime and device regression tests**
+
+Run: `npx tsx --test tests/device-heartbeat-event-noise.test.ts tests/android-root-realtime-noise.test.ts tests/device-gui-cli-capabilities.test.ts tests/device-execution-conflict.test.ts tests/conversation-home-items.test.ts tests/realtime-refresh-utils.test.ts tests/project-scoped-realtime-refresh.test.ts tests/android-folder-realtime-refresh.test.ts`
+
+Expected: all selected tests pass.
+
+- [ ] **Step 2: Run project gates**
+
+Run: `npm run lint`
+
+Expected: lint exits 0.
+
+Run: `npm run build`
+
+Expected: production build exits 0.
+
+- [ ] **Step 3: Build and install Android release APK**
+
+Run: `cd android && ./gradlew assembleRelease`
+
+Expected: release APK builds successfully.
+
+Run: `adb -s <wireless-device-id> install -r android/app/build/outputs/apk/release/app-release.apk`
+
+Expected: install returns `Success`.
diff --git a/docs/superpowers/specs/2026-04-10-android-realtime-noise-reduction-design.md b/docs/superpowers/specs/2026-04-10-android-realtime-noise-reduction-design.md
new file mode 100644
index 0000000..6a10d15
--- /dev/null
+++ b/docs/superpowers/specs/2026-04-10-android-realtime-noise-reduction-design.md
@@ -0,0 +1,23 @@
+# Android Realtime Noise Reduction Design
+
+## Goal
+
+Reduce Android message receive stutter and reconnect-visible reloads by preventing heartbeat-only SSE traffic from triggering full conversation list refreshes.
+
+## Evidence
+
+The production `boss-web` service was active and had no recent service errors. A direct authenticated SSE probe showed the stream stays open with keepalive comments, but every local-agent heartbeat emitted `devices.updated` followed by `conversation.updated` with only `deviceId`. Android `MainActivity` treated that device-only `conversation.updated` as a full conversations tab reload. The stream also sends an initial `conversation.context_indicator.updated` snapshot on connection; Android was not consuming its payload directly and instead used it as another full reload trigger.
+
+## Design
+
+Keep `devices.updated` for every heartbeat so device status remains fresh. Stop publishing `conversation.updated` for unchanged device heartbeats. Publish a single `conversation.updated` with `note: "device_import.updated"` only when heartbeat candidate/import state actually changes the conversation drawer structure.
+
+On Android, do not use the initial `conversation.context_indicator.updated` snapshot as a full list reload trigger. Actual conversation and project message events still refresh the relevant views, while the existing root-page auto-refresh remains the low-frequency fallback for aggregate context status.
+
+## Testing
+
+Add event-contract tests proving unchanged heartbeats only emit `devices.updated`, while changed import candidates emit one `conversation.updated` marked as `device_import.updated`. Add an Android static test proving `MainActivity` no longer returns `true` for the initial context snapshot refresh path.
+
+## Out Of Scope
+
+This change does not replace SSE with a different transport, does not remove project-scoped message events, and does not implement payload-level in-place updates for Android conversation rows.
diff --git a/src/lib/boss-data.ts b/src/lib/boss-data.ts
index 3b1a0b8..990c1de 100644
--- a/src/lib/boss-data.ts
+++ b/src/lib/boss-data.ts
@@ -7648,6 +7648,7 @@ export async function upsertDeviceHeartbeat(payload: {
   }>;
 }) {
   const result = await mutateState((state) => {
+    let conversationRefreshRequired = false;
     const projectUnderstandingSyncRequests: Array<{
       projectId: string;
       observedActivityAt: string;
@@ -7761,6 +7762,7 @@ export async function upsertDeviceHeartbeat(payload: {
         } else if (!existing.deviceIds.includes(payload.deviceId)) {
           existing.deviceIds.push(payload.deviceId);
           existing.isGroup = existing.deviceIds.length > 1;
+          conversationRefreshRequired = true;
         }
       }
     }
@@ -7896,6 +7898,7 @@ export async function upsertDeviceHeartbeat(payload: {
           pruneMissingCandidates: true,
         });
         draft = applied.draft;
+        conversationRefreshRequired = true;
       }
     }
 
@@ -7905,13 +7908,16 @@ export async function upsertDeviceHeartbeat(payload: {
       pairingStatus: claimedEnrollment?.status,
       importDraft: draft,
       projectUnderstandingSyncRequests,
+      conversationRefreshRequired,
     };
   });
   for (const request of result.projectUnderstandingSyncRequests ?? []) {
     await queueProjectUnderstandingSyncTask(request);
   }
   publishBossEvent("devices.updated", { deviceId: payload.deviceId });
-  publishBossEvent("conversation.updated", { deviceId: payload.deviceId });
+  if (result.conversationRefreshRequired) {
+    publishBossEvent("conversation.updated", { deviceId: payload.deviceId, note: "device_import.updated" });
+  }
   return result;
 }
 
@@ -7994,6 +8000,13 @@ function shouldAutoSyncHeartbeatCandidates(input: {
   if (!input.wasExistingDevice) return false;
   if (input.device.source !== "production") return false;
   if (!input.draft || input.draft.candidates.length === 0) return false;
+  if (
+    input.draft.status === "applied" &&
+    input.draft.resolutionId &&
+    sameStringSet(input.draft.selectedCandidateIds, resolveAutoSyncCandidateIds(input.draft))
+  ) {
+    return false;
+  }
   if (
     input.claimedEnrollment?.enrollmentId &&
     input.draft.enrollmentId === input.claimedEnrollment.enrollmentId
diff --git a/tests/android-root-realtime-noise.test.ts b/tests/android-root-realtime-noise.test.ts
new file mode 100644
index 0000000..5b96767
--- /dev/null
+++ b/tests/android-root-realtime-noise.test.ts
@@ -0,0 +1,16 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+
+test("android root page does not force a full list refresh for initial context snapshots", async () => {
+  const source = await readFile(
+    new URL("../android/app/src/main/java/com/hyzq/boss/MainActivity.java", import.meta.url),
+    "utf8",
+  );
+
+  assert.doesNotMatch(
+    source,
+    /"conversation\.context_indicator\.updated"[\s\S]{0,120}return true;/,
+    "context indicator snapshots are payload-only hints and should not trigger a full Android list reload",
+  );
+});
diff --git a/tests/device-heartbeat-event-noise.test.ts b/tests/device-heartbeat-event-noise.test.ts
new file mode 100644
index 0000000..91681f9
--- /dev/null
+++ b/tests/device-heartbeat-event-noise.test.ts
@@ -0,0 +1,116 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import os from "node:os";
+import path from "node:path";
+import { mkdtemp, rm } from "node:fs/promises";
+
+let runtimeRoot = "";
+let readState: (typeof import("../src/lib/boss-data"))["readState"];
+let upsertDeviceHeartbeat: (typeof import("../src/lib/boss-data"))["upsertDeviceHeartbeat"];
+let subscribeBossEvents: (typeof import("../src/lib/boss-events"))["subscribeBossEvents"];
+
+async function setup() {
+  if (runtimeRoot) return;
+
+  runtimeRoot = await mkdtemp(path.join(os.tmpdir(), "boss-device-heartbeat-noise-"));
+  process.env.BOSS_RUNTIME_ROOT = runtimeRoot;
+  process.env.BOSS_STATE_FILE = path.join(runtimeRoot, "boss-state.json");
+
+  const [data, events] = await Promise.all([
+    import("../src/lib/boss-data.ts"),
+    import("../src/lib/boss-events.ts"),
+  ]);
+  readState = data.readState;
+  upsertDeviceHeartbeat = data.upsertDeviceHeartbeat;
+  subscribeBossEvents = events.subscribeBossEvents;
+}
+
+test.after(async () => {
+  if (runtimeRoot) {
+    await rm(runtimeRoot, { recursive: true, force: true });
+  }
+});
+
+function buildHeartbeatPayload(deviceId: string, projectCandidates: Array<{
+  folderName: string;
+  threadId: string;
+  threadDisplayName: string;
+  codexFolderRef: string;
+  codexThreadRef: string;
+  lastActiveAt: string;
+}>) {
+  return {
+    deviceId,
+    token: `${deviceId}-token`,
+    name: "Mac Studio",
+    avatar: "M",
+    account: "17600003315",
+    status: "online" as const,
+    quota5h: 68,
+    quota7d: 81,
+    projects: [],
+    endpoint: "mac://kris.local",
+    projectCandidates,
+  };
+}
+
+const bossThreadCandidate = {
+  folderName: "boss",
+  threadId: "thread-boss-main",
+  threadDisplayName: "Boss开发主线程",
+  codexFolderRef: "/Users/kris/code/boss",
+  codexThreadRef: "thread-boss-main",
+  lastActiveAt: "2026-04-10T10:00:00.000Z",
+};
+
+test("unchanged device heartbeats do not publish conversation refresh events", async () => {
+  await setup();
+
+  const heartbeat = buildHeartbeatPayload("noise-device-a", [bossThreadCandidate]);
+  await upsertDeviceHeartbeat(heartbeat);
+  await upsertDeviceHeartbeat(heartbeat);
+
+  const primedState = await readState();
+  const primedDraft = primedState.deviceImportDrafts.find((draft) => draft.deviceId === "noise-device-a");
+  assert.equal(primedDraft?.status, "applied");
+
+  const events: Array<{ event: string; payload: { note?: string; deviceId?: string } }> = [];
+  const unsubscribe = subscribeBossEvents((event, payload) => {
+    events.push({ event, payload });
+  });
+  await upsertDeviceHeartbeat(heartbeat);
+  unsubscribe();
+
+  assert.deepEqual(events.map((event) => event.event), ["devices.updated"]);
+});
+
+test("device heartbeats publish one conversation refresh when import candidates change", async () => {
+  await setup();
+
+  const nextThreadCandidate = {
+    folderName: "boss",
+    threadId: "thread-boss-review",
+    threadDisplayName: "Boss回归线程",
+    codexFolderRef: "/Users/kris/code/boss",
+    codexThreadRef: "thread-boss-review",
+    lastActiveAt: "2026-04-10T10:01:00.000Z",
+  };
+
+  await upsertDeviceHeartbeat(buildHeartbeatPayload("noise-device-b", [bossThreadCandidate]));
+  await upsertDeviceHeartbeat(buildHeartbeatPayload("noise-device-b", [bossThreadCandidate]));
+
+  const events: Array<{ event: string; payload: { note?: string; deviceId?: string } }> = [];
+  const unsubscribe = subscribeBossEvents((event, payload) => {
+    events.push({ event, payload });
+  });
+  await upsertDeviceHeartbeat(buildHeartbeatPayload("noise-device-b", [bossThreadCandidate, nextThreadCandidate]));
+  unsubscribe();
+
+  assert.deepEqual(
+    events.map((event) => [event.event, event.payload.deviceId, event.payload.note]),
+    [
+      ["devices.updated", "noise-device-b", undefined],
+      ["conversation.updated", "noise-device-b", "device_import.updated"],
+    ],
+  );
+});