Implement code changes to enhance functionality and improve performance

frontend/src/app/pages/AIAnalysisPage.tsx

@@ -1,6 +1,7 @@
 import { useState, useEffect } from "react";
 import { useNavigate, useParams } from "react-router";
 import { motion, AnimatePresence } from "motion/react";
+import bridge from "../services/bridge";
 import {
   ChevronLeft,
   Heart,
@@ -48,28 +49,33 @@ export function AIAnalysisPage() {
   }, [reportId]);
 
   const handleCopyLink = async () => {
+    const shareUrl = `${window.location.origin}/share/${reportId}`;
+    // 微信 web-view 中 navigator.clipboard 不可用，用 execCommand 替代
+    let copied = false;
+    const textArea = document.createElement('textarea');
+    textArea.value = shareUrl;
+    textArea.style.position = 'fixed';
+    textArea.style.left = '-999999px';
+    textArea.style.top = '-999999px';
+    textArea.style.opacity = '0';
+    document.body.appendChild(textArea);
+    textArea.focus();
+    textArea.select();
     try {
-      const shareUrl = `${window.location.origin}/share/${reportId}`;
+      copied = document.execCommand('copy');
-      await navigator.clipboard.writeText(shareUrl);
+    } catch (e) {
+      console.warn('[copy] execCommand failed:', e);
+    }
+    document.body.removeChild(textArea);
+
+    if (copied) {
+      setLinkCopied(true);
+      setTimeout(() => setLinkCopied(false), 2000);
+    } else {
+      // 兜底：通过小程序桥接（postMessage 在页面离开时触发）
+      bridge.copyLink(shareUrl);
       setLinkCopied(true);
       setTimeout(() => setLinkCopied(false), 2000);
-    } catch (error) {
-      console.error('复制失败:', error);
-      // 降级方案：使用旧的复制方法
-      const textArea = document.createElement('textarea');
-      textArea.value = `${window.location.origin}/share/${reportId}`;
-      textArea.style.position = 'fixed';
-      textArea.style.left = '-999999px';
-      document.body.appendChild(textArea);
-      textArea.select();
-      try {
-        document.execCommand('copy');
-        setLinkCopied(true);
-        setTimeout(() => setLinkCopied(false), 2000);
-      } catch (err) {
-        alert('复制失败，请手动复制链接');
-      }
-      document.body.removeChild(textArea);
     }
   };