diff --git a/internal/api/web/index.html b/internal/api/web/index.html
index ac00368..012497b 100644
--- a/internal/api/web/index.html
+++ b/internal/api/web/index.html
@@ -84,7 +84,7 @@ function toggleAll(v){const source=searchMode?searchItems:lastItems;source.forEa
 function clearSelection(){selected.clear();updateSelection();if(searchMode){renderSearch(searchItems);return}renderGrid(lastItems);renderList(lastItems)}
 function updateSelection(){const n=selected.size;$("bulk").classList.toggle("show",n>0);$("selectedCount").textContent=n?("已选择 "+n+" 项"):"";const source=searchMode?searchItems:lastItems;const header=$("files").closest("table")?.querySelector("thead .selectbox");if(header){const total=source.length;header.checked=total>0&&n===total;header.indeterminate=n>0&&n<total}document.querySelectorAll("#files .file-row").forEach(row=>{const p=row.dataset.searchPath||row.dataset.filePath;row.classList.toggle("selected",!!p&&selected.has(p));const cb=row.querySelector(".selectbox");if(cb)cb.checked=!!p&&selected.has(p)});$("grid").querySelectorAll(".tile").forEach((el,i)=>{const f=source[i];if(f){const p=searchMode?f.path:(current?current+"/":"")+f.name,yes=selected.has(p);el.classList.toggle("selected",yes);const cb=el.querySelector(".selectbox");if(cb)cb.checked=yes}})}
 function setView(v){localStorage.setItem('chfs-view',v);$("files").parentElement.hidden=v==='grid';$("grid").hidden=v!=='grid';document.querySelectorAll('.viewbtn').forEach(b=>b.classList.remove('active'));$(v+'Btn').classList.add('active')}
-function itemMenu(e,p){e.preventDefault();e.stopPropagation();if(!selected.has(p)){selected.clear();selected.add(p);updateSelection()}const f=lastItems.find(x=>(current?current+'/':'')+x.name===p);const canRead=(f?.mask||'').includes('R'),canWrite=(f?.mask||'').includes('W'),canDelete=(f?.mask||'').includes('D');let html='';if(canRead)html+='<button onclick="downloadFile('+attrJSON(p)+');closeContext()">下载</button>';if(f?.dir&&canRead)html+='<button onclick="downloadDir('+attrJSON(p)+');closeContext()">下载 ZIP</button>';if(canWrite)html+='<button onclick="renameItem('+attrJSON(p)+');closeContext()">重命名</button><button onclick="transferItem('+attrJSON(p)+',false);closeContext()">移动到…</button><button onclick="transferItem('+attrJSON(p)+',true);closeContext()">复制到…</button>';if(canDelete)html+='<button onclick="removeItem('+attrJSON(p)+');closeContext()">删除</button>';if(f?.guestMask?.includes('R'))html+='<button onclick="shareItem('+attrJSON(p)+');closeContext()">分享</button>';if(!html)html='<div class="meta" style="padding:8px">没有可用操作</div>';$("context").innerHTML=html;$("context").style.left=Math.min(e.clientX,innerWidth-190)+'px';$("context").style.top=Math.min(e.clientY,innerHeight-220)+'px';$("context").style.display='block'}
+function itemMenu(e,p){e.preventDefault();e.stopPropagation();if(!selected.has(p)){selected.clear();selected.add(p);updateSelection()}const f=lastItems.find(x=>(current?current+'/':'')+x.name===p);const guest=!me.username;if(guest){const canRead=(f?.guestMask||f?.mask||'').includes('R');let html='';if(canRead)html+='<button onclick="downloadFile('+attrJSON(p)+');closeContext()">下载</button>';if(f?.dir&&canRead)html+='<button onclick="downloadDir('+attrJSON(p)+');closeContext()">下载 ZIP</button>';if(canRead)html+='<button onclick="shareItem('+attrJSON(p)+');closeContext()">分享</button>';if(!html)html='<div class="meta" style="padding:8px">没有可用操作</div>';$("context").innerHTML=html;$("context").style.left=Math.min(e.clientX,innerWidth-190)+'px';$("context").style.top=Math.min(e.clientY,innerHeight-220)+'px';$("context").style.display='block';return}const canRead=(f?.mask||'').includes('R'),canWrite=(f?.mask||'').includes('W'),canDelete=(f?.mask||'').includes('D');let html='';if(canRead)html+='<button onclick="downloadFile('+attrJSON(p)+');closeContext()">下载</button>';if(f?.dir&&canRead)html+='<button onclick="downloadDir('+attrJSON(p)+');closeContext()">下载 ZIP</button>';if(canWrite)html+='<button onclick="renameItem('+attrJSON(p)+');closeContext()">重命名</button><button onclick="transferItem('+attrJSON(p)+',false);closeContext()">移动到…</button><button onclick="transferItem('+attrJSON(p)+',true);closeContext()">复制到…</button>';if(canDelete)html+='<button onclick="removeItem('+attrJSON(p)+');closeContext()">删除</button>';if(f?.guestMask?.includes('R'))html+='<button onclick="shareItem('+attrJSON(p)+');closeContext()">分享</button>';if(!html)html='<div class="meta" style="padding:8px">没有可用操作</div>';$("context").innerHTML=html;$("context").style.left=Math.min(e.clientX,innerWidth-190)+'px';$("context").style.top=Math.min(e.clientY,innerHeight-220)+'px';$("context").style.display='block'}
 function closeContext(){$("context").style.display='none'}
 addEventListener('click',e=>{if(!e.target.closest('#context')&&!e.target.closest('.tile-action')&&!e.target.closest('.actions'))closeContext()});
 function bulkDownload(){if(!selected.size)return;const q=[...selected].map(p=>'path='+encodeURIComponent(p)).join('&');location.href='/chfs/downloadzip?'+q}