feat(O): Android 首页近期动态实时刷新

- 新增 ActivityEventBus(进程级静态回调, 主线程派发)
- PlatformServiceManager/DeviceControlActivity/TuyaSdkService 在动态落库成功后 notify
- HomeFragment 注册监听并 400ms 防抖重载近期动态, onResume/onHiddenChanged 兜底刷新

Android/app/src/main/java/com/xhai/iot/service/PlatformServiceManager.java

@@ -145,6 +145,8 @@ public class PlatformServiceManager {
                         @Override
                         public void onResponse(retrofit2.Call<Result<Void>> call,
                                                retrofit2.Response<Result<Void>> response) {
+                            // 动态已落库，通知首页「近期动态」实时刷新
+                            com.xhai.iot.util.ActivityEventBus.notifyChanged(device.getDeviceId());
                         }
 
                         @Override

Android/app/src/main/java/com/xhai/iot/service/TuyaSdkService.java

@@ -95,6 +95,8 @@ public class TuyaSdkService {
                         @Override
                         public void onResponse(retrofit2.Call<com.xhai.iot.model.Result<Integer>> call,
                                                retrofit2.Response<com.xhai.iot.model.Result<Integer>> response) {
+                            // 后端已记录 DP 变化动态（source=panel），通知首页刷新近期动态
+                            com.xhai.iot.util.ActivityEventBus.notifyChanged(devId);
                         }
 
                         @Override

Android/app/src/main/java/com/xhai/iot/ui/DeviceControlActivity.java

@@ -1122,6 +1122,8 @@ public class DeviceControlActivity extends AppCompatActivity {
                         @Override
                         public void onResponse(retrofit2.Call<com.xhai.iot.model.Result<Void>> call,
                                                retrofit2.Response<com.xhai.iot.model.Result<Void>> response) {
+                            // 动态已落库，通知首页「近期动态」实时刷新
+                            com.xhai.iot.util.ActivityEventBus.notifyChanged(deviceId);
                         }
 
                         @Override

Android/app/src/main/java/com/xhai/iot/ui/HomeFragment.java

@@ -28,6 +28,7 @@ import com.xhai.iot.model.Result;
 import com.xhai.iot.model.TuyaDevice;
 import com.xhai.iot.service.TuyaSdkService;
 import com.xhai.iot.ui.adapter.HomeDeviceAdapter;
+import com.xhai.iot.util.ActivityEventBus;
 import com.xhai.iot.util.SessionManager;
 import com.xhai.iot.util.ThemeManager;
 import com.thingclips.smart.sdk.api.IDevListener;
@@ -93,6 +94,8 @@ public class HomeFragment extends Fragment {
         loadRecentActivities();
         // 注册设备状态回调，物理开关/远程状态变化时实时刷新列表
         TuyaSdkService.registerStatusCallback(deviceStatusCallback);
+        // 注册动态事件回调：任意控制落库成功后，首页「近期动态」立即刷新
+        ActivityEventBus.register(activityEventListener);
     }
 
     @Override
@@ -100,6 +103,11 @@ public class HomeFragment extends Fragment {
         super.onDestroyView();
         unregisterAllTuyaListeners();
         TuyaSdkService.unregisterStatusCallback(deviceStatusCallback);
+        ActivityEventBus.unregister(activityEventListener);
+        if (activityRefreshTask != null) {
+            activityRefreshHandler.removeCallbacks(activityRefreshTask);
+            activityRefreshTask = null;
+        }
     }
 
     @Override
@@ -112,6 +120,8 @@ public class HomeFragment extends Fragment {
                 adapter.notifyDataSetChanged();
             }
             loadDevicesFromBackend();
+            // 兜底：页面回到前台时同步一次近期动态（覆盖进程内事件丢失的情况）
+            scheduleActivityRefresh();
         }
     }
 
@@ -122,9 +132,35 @@ public class HomeFragment extends Fragment {
         if (!hidden && adapter != null && isAdded()) {
             adapter.setAccentColor(ThemeManager.getInstance(requireContext()).accent().value);
             adapter.notifyDataSetChanged();
+            // 兜底：切回首页时同步一次近期动态
+            scheduleActivityRefresh();
         }
     }
 
+    // ==================== 近期动态实时刷新 ====================
+
+    /** 动态事件回调：控制落库成功后触发「近期动态」重载 */
+    private final ActivityEventBus.Listener activityEventListener = deviceId -> {
+        if (!isAdded()) return;
+        android.util.Log.i("HomeFragment", "动态事件触发刷新: deviceId=" + deviceId);
+        scheduleActivityRefresh();
+    };
+
+    /** 动态刷新防抖时间（合并短时间内连续触发） */
+    private static final long ACTIVITY_REFRESH_DEBOUNCE_MS = 400L;
+    private final android.os.Handler activityRefreshHandler =
+            new android.os.Handler(android.os.Looper.getMainLooper());
+    private Runnable activityRefreshTask;
+
+    /** 防抖刷新近期动态 */
+    private void scheduleActivityRefresh() {
+        if (activityRefreshTask != null) {
+            activityRefreshHandler.removeCallbacks(activityRefreshTask);
+        }
+        activityRefreshTask = this::loadRecentActivities;
+        activityRefreshHandler.postDelayed(activityRefreshTask, ACTIVITY_REFRESH_DEBOUNCE_MS);
+    }
+
     // ==================== 刷新节流（避免高频全量重绑导致界面闪动） ====================
 
     /**

Android/app/src/main/java/com/xhai/iot/util/ActivityEventBus.java

@@ -0,0 +1,69 @@
+package com.xhai.iot.util;
+
+import android.os.Handler;
+import android.os.Looper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 设备动态（操控记录）事件总线。
+ *
+ * <p>首页「近期动态」是后端 device_activity_log 的快照，控制动作本身走涂鸦 SDK 直连、
+ * 不经后端，所以必须由客户端在动态<b>落库成功</b>之后主动通知 UI 刷新，否则首页列表
+ * 一直停留在进入页面那一刻的静态数据。</p>
+ *
+ * <p>实现方式与 {@code TuyaSdkService} 的状态回调保持一致：进程级静态回调列表，
+ * 页面注册/注销，事件在主线程派发。</p>
+ */
+public final class ActivityEventBus {
+
+    /** 动态变更监听 */
+    public interface Listener {
+        /**
+         * @param deviceId 发生动态的设备ID，可能为 null（表示全局刷新）
+         */
+        void onActivityChanged(String deviceId);
+    }
+
+    private static final List<Listener> listeners = new ArrayList<>();
+    private static final Handler MAIN = new Handler(Looper.getMainLooper());
+
+    private ActivityEventBus() {
+    }
+
+    /** 注册监听 */
+    public static void register(Listener listener) {
+        if (listener == null) return;
+        synchronized (listeners) {
+            if (!listeners.contains(listener)) {
+                listeners.add(listener);
+            }
+        }
+    }
+
+    /** 注销监听 */
+    public static void unregister(Listener listener) {
+        if (listener == null) return;
+        synchronized (listeners) {
+            listeners.remove(listener);
+        }
+    }
+
+    /** 通知所有监听：设备动态已新增（落库成功后才调用） */
+    public static void notifyChanged(String deviceId) {
+        final List<Listener> snapshot;
+        synchronized (listeners) {
+            if (listeners.isEmpty()) return;
+            snapshot = new ArrayList<>(listeners);
+        }
+        MAIN.post(() -> {
+            for (Listener l : snapshot) {
+                try {
+                    l.onActivityChanged(deviceId);
+                } catch (Exception ignored) {
+                }
+            }
+        });
+    }
+}