fix：参考金值，研听，研值工程通用通用工程公共能力，重点对比网络请求、登录认证、状态管理、本地存储、WebView、推送、版本更新、一键登录、主题/UI 等模块，确定后续统一整改方案

lib/features/web/presentation/web_page.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
 import 'package:go_router/go_router.dart';
@@ -31,32 +33,37 @@ class _AppWebPageState extends State<AppWebPage> {
   @override
   void initState() {
     super.initState();
-    _controller = WebViewController()
-      ..setJavaScriptMode(JavaScriptMode.unrestricted)
-      ..addJavaScriptChannel(
-        'JinzhiBridge',
-        onMessageReceived: (message) {
-          if (message.message == 'close' && mounted) context.pop();
-        },
-      )
-      ..setNavigationDelegate(
-        NavigationDelegate(
-          onProgress: (progress) => setState(() => _progress = progress),
-          onPageFinished: (_) async {
-            final title = await _controller.getTitle();
-            if (mounted && title != null && title.trim().isNotEmpty) {
-              setState(() => _title = title.trim());
-            }
-          },
-          onWebResourceError: (error) {
-            if (error.isForMainFrame == true && mounted) {
-              setState(() => _error = error.description);
-            }
-          },
-          onNavigationRequest: _onNavigationRequest,
-        ),
-      )
-      ..loadRequest(widget.initialUri);
+    _controller =
+        WebViewController(
+            // Ordinary pages never receive camera/microphone or other protected
+            // resources. MallWebHost owns its separate permission policy.
+            onPermissionRequest: (request) => unawaited(request.deny()),
+          )
+          ..setJavaScriptMode(JavaScriptMode.unrestricted)
+          ..addJavaScriptChannel(
+            'JinzhiBridge',
+            onMessageReceived: (message) {
+              if (message.message == 'close' && mounted) context.pop();
+            },
+          )
+          ..setNavigationDelegate(
+            NavigationDelegate(
+              onProgress: (progress) => setState(() => _progress = progress),
+              onPageFinished: (_) async {
+                final title = await _controller.getTitle();
+                if (mounted && title != null && title.trim().isNotEmpty) {
+                  setState(() => _title = title.trim());
+                }
+              },
+              onWebResourceError: (error) {
+                if (error.isForMainFrame == true && mounted) {
+                  setState(() => _error = error.description);
+                }
+              },
+              onNavigationRequest: _onNavigationRequest,
+            ),
+          )
+          ..loadRequest(widget.initialUri);
   }
 
   NavigationDecision _onNavigationRequest(NavigationRequest request) {