debug: SharePage 添加可见调试面板，追踪分享按钮执行步骤

frontend/src/app/pages/SharePage.tsx

@@ -24,6 +24,27 @@ import bridge from "../services/bridge";
 
 type SaveStatus = "idle" | "generating" | "success" | "error";
 
+/** 调试：检查小程序环境 */
+function checkEnv(): string[] {
+  const lines: string[] = [];
+  lines.push('UA: ' + navigator.userAgent.substring(0, 60));
+  try {
+    const w = (window as any).wx;
+    lines.push('wx 对象: ' + (typeof w !== 'undefined' ? '存在' : '不存在'));
+    if (w) {
+      lines.push('wx.miniProgram: ' + (w.miniProgram ? '存在' : '不存在'));
+      if (w.miniProgram) {
+        lines.push('navigateBack: ' + (typeof w.miniProgram.navigateBack));
+        lines.push('postMessage: ' + (typeof w.miniProgram.postMessage));
+        w.miniProgram.getEnv((res: any) => {
+          lines.push('getEnv: ' + JSON.stringify(res));
+        });
+      }
+    }
+  } catch (e: any) { lines.push('wx 检测异常: ' + e.message); }
+  return lines;
+}
+
 export function SharePage() {
   const navigate = useNavigate();
   const { reportId } = useParams();
@@ -32,8 +53,48 @@ export function SharePage() {
   const [saveStatus, setSaveStatus] = useState<SaveStatus>("idle");
   const [imageUrl, setImageUrl] = useState<string | null>(null);
   const [linkCopied, setLinkCopied] = useState(false);
+  const [debugLog, setDebugLog] = useState<string[]>([]);
   const cardRef = useRef<HTMLDivElement>(null);
 
+  const addLog = useCallback((msg: string) => {
+    console.log('[ShareDebug]', msg);
+    setDebugLog(prev => [...prev.slice(-15), new Date().toLocaleTimeString() + ' ' + msg]);
+  }, []);
+
+  // 分享按钮（带调试日志）
+  const handleShare = useCallback(() => {
+    setDebugLog([]);
+    const envInfo = checkEnv();
+    envInfo.forEach(m => addLog(m));
+
+    const w = (window as any).wx;
+    const mp = w?.miniProgram;
+    
+    if (!mp) {
+      addLog('❌ wx.miniProgram 不存在，分享功能不可用');
+      return;
+    }
+
+    addLog('→ postMessage 发送 share 数据');
+    mp.postMessage({
+      data: {
+        action: 'share',
+        title: '孕育无忧 · 报告解读',
+        summary: shareData?.overall_summary || shareData?.emotional_summary || '',
+        href: window.location.href,
+        scene: 'WXSceneSession',
+      }
+    });
+
+    addLog('→ 调用 navigateBack({delta:1})');
+    mp.navigateBack({
+      delta: 1,
+      success: () => addLog('✅ navigateBack 成功'),
+      fail: (err: any) => addLog('❌ navigateBack 失败: ' + JSON.stringify(err)),
+      complete: () => addLog('→ navigateBack complete'),
+    });
+  }, [addLog, shareData]);
+
   // 复制链接（客户端优先，bridge 降级）
   const handleCopyLink = useCallback(async () => {
     const shareUrl = `${window.location.origin}/app_03/share/${reportId}`;
@@ -304,6 +365,27 @@ export function SharePage() {
           </div>
         </div>
 
+        {/* 调试面板：点击分享后显示执行步骤 */}
+        <AnimatePresence>
+          {debugLog.length > 0 && (
+            <motion.div
+              initial={{ opacity: 0, y: -10 }}
+              animate={{ opacity: 1, y: 0 }}
+              exit={{ opacity: 0 }}
+            >
+              <Card className="bg-yellow-50 border-yellow-300 rounded-2xl p-3">
+                <div className="flex items-center justify-between mb-2">
+                  <h4 className="font-semibold text-yellow-800 text-sm">🔍 分享调试</h4>
+                  <button onClick={() => setDebugLog([])} className="text-yellow-600 text-xs">关闭</button>
+                </div>
+                <div className="bg-black/80 text-green-400 text-xs p-2 rounded-lg font-mono" style={{ whiteSpace: 'pre-wrap', wordBreak: 'break-all', lineHeight: 1.6 }}>
+                  {debugLog.map((m, i) => <div key={i}>{m}</div>)}
+                </div>
+              </Card>
+            </motion.div>
+          )}
+        </AnimatePresence>
+
         {/* 操作提示 */}
         <motion.div
           initial={{ opacity: 0, y: 20 }}
@@ -337,12 +419,7 @@ export function SharePage() {
         <div className="max-w-md mx-auto space-y-3">
           {/* 微信分享按钮（仅在 web-view 环境下生效） */}
           <Button
-            onClick={() => bridge.share({
+            onClick={handleShare}
-              title: '孕育无忧 · 报告解读',
-              summary: shareData?.overall_summary || shareData?.emotional_summary || '',
-              href: window.location.href,
-              scene: 'WXSceneSession',
-            })}
             className="w-full h-14 rounded-2xl text-base font-semibold flex items-center justify-center gap-2 bg-[#07C160] hover:bg-[#06AD56] text-white shadow-lg shadow-green-300/30"
           >
             <Share2 className="w-5 h-5" />