diff --git a/app/src/main/assets/extensions/bridge/bridge.js b/app/src/main/assets/extensions/bridge/bridge.js
index bb9c36b..84f2d2f 100644
--- a/app/src/main/assets/extensions/bridge/bridge.js
+++ b/app/src/main/assets/extensions/bridge/bridge.js
@@ -1,5 +1,4 @@
 (function() {
-    // 在页面上下文中注入桥接脚本，避免 cross-compartment 访问被拒
     var code = [
         '(function() {',
         '  var _realAndroid = window.android;',
diff --git a/app/src/main/assets/extensions/bridge/manifest.json b/app/src/main/assets/extensions/bridge/manifest.json
index 26bf027..e0c75f6 100644
--- a/app/src/main/assets/extensions/bridge/manifest.json
+++ b/app/src/main/assets/extensions/bridge/manifest.json
@@ -1,10 +1,16 @@
 {
   "manifest_version": 2,
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "standapp-bridge@standapp.local"
+    }
+  },
   "name": "standapp-bridge",
   "version": "1.0",
+  "type": "extension",
   "description": "JS-Native bridge for StandAPP",
   "content_scripts": [{
-    "matches": ["*://*/*"],
+    "matches": ["<all_urls>"],
     "js": ["bridge.js"],
     "run_at": "document_start",
     "all_frames": true
diff --git a/app/src/main/assets/print_demo.html b/app/src/main/assets/print_demo.html
index 249d073..e6a7e72 100644
--- a/app/src/main/assets/print_demo.html
+++ b/app/src/main/assets/print_demo.html
@@ -263,6 +263,15 @@
             updatePrinterStatus();
             // 每 3 秒同步一次打印机状态
             setInterval(updatePrinterStatus, 3000);
+            // 确认接口可用后再加载历史
+            loadHistory();
+            // 通知 Android 页面加载完成
+            if (window.android.onPageFinished) {
+                window.android.onPageFinished();
+            }
+        } else {
+            // bridge 尚未注入，200ms 后重试
+            setTimeout(checkApp, 200);
         }
     }
 
@@ -568,12 +577,8 @@
         }
     }, 500);
 
-    // 告知 Android 页面加载完成
-    window.onload = function() {
-        if (window.android && window.android.onPageFinished) {
-            window.android.onPageFinished();
-        }
-    };
+    // 告知 Android 页面加载完成（已移至 checkApp 中，等 bridge 注入后再调用）
+    window.onload = function() {};
 
     // === WebSocket 逻辑 ===
     var ws = null;
@@ -724,11 +729,10 @@
                 addLog("系统: 终端暂无保存的记录", false);
             }
         } else {
-            alert("未检测到安卓接口，无法同步");
+            // 不再弹窗，checkApp 会在 bridge 就绪后调用 loadHistory
         }
     }
 
-    setTimeout(loadHistory, 500);
 
     // === PTT 业务测试逻辑 ===
     var pttBtn = document.getElementById('ptt-speak-btn');