diff --git a/index.html b/index.html
index 8f04e80..a4132b3 100644
--- a/index.html
+++ b/index.html
@@ -185,7 +185,7 @@ function localDemoReply(){return 'Tip: open the sidebar → Account & Backup to
 let threads=[];const titleFrom=t=>(t||'').replace(/\s+/g,' ').trim().slice(0,60)||'Untitled'
 const TKEY='threads_v1',tload=()=>localforage.getItem(TKEY).then(v=>Array.isArray(v)?v:[]),tsave=v=>localforage.setItem(TKEY,v)
 const cacheStore=localforage.createInstance({name:'master_cache'});
-async function ensureThreadOnFirstUser(text){let needNew=!state.currentThreadId;if(state.messages.length===0)state.currentThreadId=null;if(state.currentThreadId&&!threads.some(x=>x.id===state.currentThreadId))needNew=true;if(!needNew)return;const id=gid(),now=Date.now(),th={id,title:titleFrom(text),pinned:false,updatedAt:now,messages:[]};state.currentThreadId=id;threads.unshift(th);await tsave(threads);await renderThreads()}
+async function ensureThreadOnFirstUser(text){let needNew=!state.currentThreadId;if(state.messages.length===0)state.currentThreadId=null;if(state.currentThreadId&&!threads.some(x=>x.id===state.currentThreadId))needNew=true;if(!needNew)return;const id=gid(),now=Date.now(),th={id,title:titleFrom(text),pinned:false,updatedAt:now,messages:[]};state.currentThreadId=id;threads.unshift(th);await tsave(threads);await renderThreads();document.dispatchEvent(new CustomEvent('sune:new-thread',{detail:{threadId:id}}))}
 async function persistThread(full=true){if(!state.currentThreadId)return;let th=threads.find(x=>x.id===state.currentThreadId);if(!th)return;th.messages=[...state.messages];if(full){th.updatedAt=Date.now();th.title=titleFrom(partsToText(th.messages.find(m=>m.role==='user')?.content)||th.title)}await tsave(threads);if(full)await renderThreads()}
 const threadRow=t=>`<div class=\"relative flex items-center gap-2 px-3 py-2 ${t.pinned?'bg-yellow-50':''}\"><button data-open-thread=\"${t.id}\" class=\"flex-1 text-left truncate\">${t.pinned?'📌 ':''}${esc(t.title)}</button><button data-thread-menu=\"${t.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>`
 async function renderThreads(){const list=[...threads].sort((a,b)=>(b.pinned-a.pinned)||(b.updatedAt-a.updatedAt));el.threadList.innerHTML=list.map(threadRow).join('');icons()}
@@ -231,7 +231,7 @@ el.importInput.addEventListener('change',async()=>{const file=el.importInput.fil
 function kbUpdate(){const vv=window.visualViewport;const overlap=vv?Math.max(0,(window.innerHeight-(vv.height+vv.offsetTop))):0;document.documentElement.style.setProperty('--kb',overlap+'px');const fh=el.footer.getBoundingClientRect().height;document.documentElement.style.setProperty('--footer-h',fh+'px');el.footer.style.transform='translateY('+(-overlap)+'px)';el.chat.style.scrollPaddingBottom=(fh+overlap+16)+'px'}
 function kbBind(){if(window.visualViewport){['resize','scroll'].forEach(ev=>visualViewport.addEventListener(ev,()=>kbUpdate(),{passive:true}))}['resize','orientationchange'].forEach(ev=>window.addEventListener(ev,()=>setTimeout(kbUpdate,50),{passive:true}));['focus','click'].forEach(ev=>el.input.addEventListener(ev,()=>{setTimeout(()=>{kbUpdate();el.input.scrollIntoView({block:'nearest',behavior:'smooth'})},0)}))}
 function activeMeta(){return {sune_name:SUNE.name,model:SUNE.model,avatar:SUNE.avatar}}
-Object.assign(window.SUNE,{attach:async(files,opts={})=>{const arr=[];for(const f of files||[])arr.push(await toAttach(f));const clean=arr.filter(Boolean);if(!clean.length)return;await ensureThreadOnFirstUser(clean[0]?.name||'(attachments)');const meta=activeMeta();const o=typeof opts==='boolean'?{toAPI:opts,tree:true}:(opts||{});const toAPI=('toAPI'in o)?!!o.toAPI:(('toapi'in o)?!!o.toapi:true);const tree=('tree'in o)?!!o.tree:true;if(toAPI){const parts=clean.map(a=>a.part);addMessage({role:'assistant',content:parts,...meta})}if(tree)addAttachmentTree('assistant',clean);await persistThread()},log:async s=>{const t=String(s??'').trim();if(!t)return;await ensureThreadOnFirstUser(t);addMessage({role:'assistant',content:[{type:'text',text:t}],...activeMeta()});await persistThread()}})
+Object.assign(window.SUNE,{getThread:id=>threads.find(t=>t.id===id)||null,setThreadTitle:async(id,title)=>{const th=threads.find(t=>t.id===id);if(!th||!title)return;th.title=titleFrom(title);th.updatedAt=Date.now();await tsave(threads);await renderThreads()},attach:async(files,opts={})=>{const arr=[];for(const f of files||[])arr.push(await toAttach(f));const clean=arr.filter(Boolean);if(!clean.length)return;await ensureThreadOnFirstUser(clean[0]?.name||'(attachments)');const meta=activeMeta();const o=typeof opts==='boolean'?{toAPI:opts,tree:true}:(opts||{});const toAPI=('toAPI'in o)?!!o.toAPI:(('toapi'in o)?!!o.toapi:true);const tree=('tree'in o)?!!o.tree:true;if(toAPI){const parts=clean.map(a=>a.part);addMessage({role:'assistant',content:parts,...meta})}if(tree)addAttachmentTree('assistant',clean);await persistThread()},log:async s=>{const t=String(s??'').trim();if(!t)return;await ensureThreadOnFirstUser(t);addMessage({role:'assistant',content:[{type:'text',text:t}],...activeMeta()});await persistThread()}})
 window.USER={log:async s=>{const t=String(s??'').trim();if(!t)return;await ensureThreadOnFirstUser(t);addMessage({role:'user',content:[{type:'text',text:t}]});await persistThread()},get PAT(){return globalStore.ghToken}}
 async function init(){threads=await tload();await renderThreads();renderSidebar();await reflectActiveSune();clearChat();icons();kbBind();kbUpdate()}
 window.addEventListener('resize',()=>{hideThreadPopover();hideSunePopover()})