diff --git a/src/main.js b/src/main.js
index 7b31205..c8a4273 100644
--- a/src/main.js
+++ b/src/main.js
@@ -30,7 +30,7 @@ const reflectActiveSune=async()=>{const a=SUNE.active;el.suneBtnTop.title=`Setti
 const suneRow=a=>`<div class="relative flex items-center gap-2 px-3 py-2 ${a.pinned?'bg-yellow-50':''}"><button data-sune-id="${a.id}" class="flex-1 text-left flex items-center gap-2 ${a.id===SUNE.id?'font-medium':''}">${a.avatar?`<img src="${esc(a.avatar)}" alt="" class="h-8 w-8 rounded-full object-cover"/>`:`<span class="h-6 w-6 rounded-full bg-gray-200 flex items-center justify-center">✺</span>`}<span class="truncate">${a.pinned?'📌 ':''}${esc(a.name)}</span></button><button data-sune-menu="${a.id}" class="h-8 w-8 rounded hover:bg-gray-100 flex items-center justify-center" title="More"><i data-lucide="more-horizontal" class="h-4 w-4"></i></button></div>`
 const renderSidebar=window.renderSidebar=()=>{const list=[...SUNE.list].sort((a,b)=>(b.pinned-a.pinned));el.suneList.innerHTML=list.map(suneRow).join('');icons()}
 function enhanceCodeBlocks(root,doHL=true){$(root).find('pre>code').each((i,code)=>{if(code.textContent.length>200000)return;const $pre=$(code).parent().addClass('relative rounded-xl border border-gray-200');if(!$pre.find('.code-actions').length){const len=code.textContent.length,countText=len>=1e3?(len/1e3).toFixed(1)+'K':len;const $btn=$('<button class="bg-slate-900 text-white rounded-lg py-1 px-2 text-xs opacity-85">Copy</button>').on('click',async e=>{e.stopPropagation();try{await navigator.clipboard.writeText(code.innerText);$btn.text('Copied');setTimeout(()=>$btn.text('Copy'),1200)}catch{}});const $container=$('<div class="code-actions absolute top-2 right-2 flex items-center gap-2"></div>');$container.append($(`<span class="text-xs text-gray-500">${countText} chars</span>`),$btn);$pre.append($container)}if(doHL&&window.hljs&&code.textContent.length<100000)hljs.highlightElement(code)})}
-const md=window.markdownit({html:false,linkify:true,typographer:true,breaks:true})
+const md=window.markdownit({html:false,linkify:true,typographer:true,breaks:true}).use(window.markdownItKatex)
 const getSuneLabel=m=>{const name=(m&&m.sune_name)||SUNE.name,modelShort=getModelShort(m&&m.model);return `${name} · ${modelShort}`}
 function _createMessageRow(m){const role=typeof m==='string'?m:(m&&m.role)||'assistant',meta=typeof m==='string'?{}:m||{},isUser=role==='user',$row=$('<div class="flex flex-col gap-2"></div>'),$head=$('<div class="flex items-center gap-2 px-4"></div>'),$avatar=$('<div></div>');const uAva=isUser?USER.avatar:meta.avatar;uAva?$avatar.attr('class','msg-avatar shrink-0 h-7 w-7 rounded-full overflow-hidden').html(`<img src="${esc(uAva)}" class="h-full w-full object-cover">`):$avatar.attr('class',`${isUser?'bg-gray-900 text-white':'bg-gray-200 text-gray-900'} msg-avatar shrink-0 h-7 w-7 rounded-full flex items-center justify-center`).text(isUser?'👤':'✺');const $name=$('<div class="text-xs font-medium text-gray-500"></div>').text(isUser?USER.name:getSuneLabel(meta));const $deleteBtn=$('<button class="p-1.5 rounded-lg hover:bg-gray-200 text-gray-400 hover:text-red-500" title="Delete message"><i data-lucide="x" class="h-4 w-4"></i></button>').on('click',async e=>{e.stopPropagation();state.messages=state.messages.filter(msg=>msg.id!==m.id);$row.remove();await THREAD.persist()});const $copyBtn=$('<button class="ml-auto p-1.5 rounded-lg hover:bg-gray-200 text-gray-400 hover:text-gray-600" title="Copy message"><i data-lucide="copy" class="h-4 w-4"></i></button>').on('click',async function(e){e.stopPropagation();try{await navigator.clipboard.writeText(partsToText(m));$(this).html('<i data-lucide="check" class="h-4 w-4 text-green-500"></i>');icons();setTimeout(()=>{$(this).html('<i data-lucide="copy" class="h-4 w-4"></i>');icons()},1200)}catch{}});$head.append($avatar,$name,$copyBtn,$deleteBtn);const $bubble=$(`<div class="${(isUser?'bg-gray-50 border border-gray-200':'bg-gray-100')+' msg-bubble markdown-body rounded-none px-4 py-3 w-full'}"></div>`);$row.append($head,$bubble);return $row}
 function msgRow(m){const $row=_createMessageRow(m);$(el.messages).append($row);queueMicrotask(()=>{el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'});icons()});return $row.find('.msg-bubble')[0]}