feat(dev): add notification debug panel and native pending inspector

Add a dev-only Notification Debug Panel at /dev/notifications for testing
predictive refresh and WAKEUP_PING without a backend.

- Gate route and Advanced Settings entry on import.meta.env.DEV
- NotificationDebugService drives mock refresh, flood test, clear, and
  wake simulation via existing handleCapacitorPushNotificationReceived and
  applyNotificationRefreshPayload (shared with refreshNotifications)
- Add NotificationInspector Capacitor plugin: iOS lists pending
  UNNotificationRequest identifiers and next trigger; Android stub returns
  empty pending for safe registration

android/app/src/main/java/app/timesafari/MainActivity.java

@@ -16,6 +16,7 @@ import android.webkit.WebViewClient;
 import com.getcapacitor.BridgeActivity;
 import app.timesafari.safearea.SafeAreaPlugin;
 import app.timesafari.sharedimage.SharedImagePlugin;
+import app.timesafari.notifications.NotificationInspectorPlugin;
 //import com.getcapacitor.community.sqlite.SQLite;
 
 import android.content.SharedPreferences;
@@ -66,6 +67,9 @@ public class MainActivity extends BridgeActivity {
         
         // Register SharedImage plugin
         registerPlugin(SharedImagePlugin.class);
+
+        // Register NotificationInspector plugin (dev tooling; safe no-op on Android)
+        registerPlugin(NotificationInspectorPlugin.class);
         
         // Register DailyNotification plugin
         // Plugin is written in Kotlin but compiles to Java-compatible bytecode

android/app/src/main/java/app/timesafari/notifications/NotificationInspectorPlugin.java

@@ -0,0 +1,19 @@
+package app.timesafari.notifications;
+
+import com.getcapacitor.JSArray;
+import com.getcapacitor.JSObject;
+import com.getcapacitor.Plugin;
+import com.getcapacitor.PluginCall;
+import com.getcapacitor.PluginMethod;
+import com.getcapacitor.annotation.CapacitorPlugin;
+
+@CapacitorPlugin(name = "NotificationInspector")
+public class NotificationInspectorPlugin extends Plugin {
+  @PluginMethod
+  public void getPendingNotifications(PluginCall call) {
+    JSObject result = new JSObject();
+    result.put("pending", new JSArray());
+    call.resolve(result);
+  }
+}
+