新增服务组件和工具类

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

app/src/main/java/com/miraclegarden/smsmessage/service/BootReceiver.java

@@ -0,0 +1,24 @@
+package com.miraclegarden.smsmessage.service;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.Looper;
+
+/**
+ * 开机后重启监听服务。
+ */
+public class BootReceiver extends BroadcastReceiver {
+    private static final long BOOT_DELAY_MS = 5000;
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        String action = intent.getAction();
+        if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
+            new Handler(Looper.getMainLooper()).postDelayed(() -> {
+                NotificationService.requestStartMonitoring(context);
+            }, BOOT_DELAY_MS);
+        }
+    }
+}