fix preview sandbox and local analytics proxy

src/components/ChatSharePreviewModal.tsx

@@ -139,7 +139,7 @@ export function ChatSharePreviewModal({
         <button type="button" className="chat-share-preview-close" onClick={onClose} aria-label="关闭">✕</button>
       </div>
       <div className="chat-share-preview-body">
-        <iframe src={previewUrl} title="页面预览" sandbox="allow-same-origin allow-scripts allow-popups allow-downloads" className="chat-share-preview-frame" />
+        <iframe src={previewUrl} title="页面预览" sandbox="allow-scripts allow-popups allow-downloads" className="chat-share-preview-frame" />
 
         <div className="chat-share-side-actions">
           {phase.kind === 'done' ? (

src/components/PageSavePreviewPanel.tsx

@@ -112,7 +112,7 @@ export function PageSavePreviewPanel({
               title="页面预览"
               src={pagePreviewUrl}
               className="page-save-mini-page-frame"
-              sandbox="allow-scripts allow-same-origin allow-downloads"
+              sandbox="allow-scripts allow-downloads"
               scrolling="yes"
               onError={() => setPreviewFailed(true)}
             />