diff --git a/index.html b/index.html
index cbe8be4..39cf8dc 100644
--- a/index.html
+++ b/index.html
@@ -117,6 +117,7 @@ const DEFAULT_MODEL='openai/gpt-5-chat',DEFAULT_API_KEY=''
 const el=Object.fromEntries(['chat','messages','composer','input','sendBtn','settingsBtnTop','settingsModal','settingsForm','closeSettings','cancelSettings','tabModel','tabPrompt','panelModel','panelPrompt','set_model','set_temperature','set_top_p','set_top_k','set_frequency_penalty','set_presence_penalty','set_repetition_penalty','set_min_p','set_top_a','set_reasoning_effort','set_system_prompt','deleteSuneBtn','sidebar','sidebarOverlay','sidebarBtn','suneList','newSuneBtn','userMenuBtn','userMenu','apiKeyOption','sunesImportOption','sunesExportOption','threadsImportOption','threadsExportOption','importInput','historyBtn','historyPanel','historyOverlay','historyList','closeHistory','historyMenu','suneMenu','footer','attachBtn','attachBadge','fileInput'].map(id=>[id,document.getElementById(id)]))
 const icons=()=>window.lucide&&lucide.createIcons()
 const clamp=(v,min,max)=>Math.max(min,Math.min(max,v)),num=(v,d)=>v==null||v===''||isNaN(+v)?d:+v,int=(v,d)=>v==null||v===''||isNaN(parseInt(v))?d:parseInt(v),gid=()=>Math.random().toString(36).slice(2,9),esc=s=>String(s).replace(/[&<>'"`]/g,c=>({"&":"&amp;","<":"&lt;",">":"&gt;","\"":"&quot;","'":"&#39;","`":"&#96;"}[c]))
+const bytes=n=>{const u=['B','KB','MB','GB','TB'];let i=0,v=n||0;while(v>=1024&&i<u.length-1){v/=1024;i++}return (i? (v<10?v.toFixed(1):Math.round(v)) : v)+' '+u[i]}
 const globalStore={get apiKey(){return localStorage.getItem('openrouter_api_key')||DEFAULT_API_KEY||''},set apiKey(v){localStorage.setItem('openrouter_api_key',v||'')}}
 const su={key:'sunes_v1',activeKey:'active_sune_id',load(){try{return JSON.parse(localStorage.getItem(this.key)||'[]')}catch{return[]}},save(list){localStorage.setItem(this.key,JSON.stringify(list||[]))},getActiveId(){return localStorage.getItem(this.activeKey)||null},setActiveId(id){localStorage.setItem(this.activeKey,id||'')}}
 const defaultSettings={model:DEFAULT_MODEL,temperature:1,top_p:0.97,top_k:0,frequency_penalty:0,presence_penalty:0,repetition_penalty:1,min_p:0,top_a:0,reasoning_effort:'default',system_prompt:''}
@@ -135,9 +136,10 @@ const md=window.markdownit({html:false,linkify:true,typographer:true,breaks:true
 const getSuneLabel=m=>{const name=(m&&m.sune_name)||getActiveSune().name,modelShort=getModelShort(m&&m.model);return `${name} · ${modelShort}`}
 function msgRow(m){const role=typeof m==='string'?m:(m&&m.role)||'assistant';const meta=typeof m==='string'?{}:m||{};const row=document.createElement('div');row.className='flex flex-col gap-2';const head=document.createElement('div');head.className='flex items-center gap-2 px-4';const avatar=document.createElement('div');if(role==='user'){avatar.className='bg-gray-900 text-white msg-avatar shrink-0 h-7 w-7 rounded-full flex items-center justify-center';avatar.textContent='🧑'}else{if(meta&&meta.avatar){avatar.className='msg-avatar shrink-0 h-7 w-7 rounded-full overflow-hidden';const img=document.createElement('img');img.src=meta.avatar;img.className='h-full w-full object-cover';avatar.appendChild(img)}else{avatar.className='bg-gray-200 text-gray-900 msg-avatar shrink-0 h-7 w-7 rounded-full flex items-center justify-center';avatar.textContent='✺'}}const name=document.createElement('div');name.className='text-xs font-medium text-gray-500';name.textContent=role==='user'?'You':getSuneLabel(meta);head.appendChild(avatar);head.appendChild(name);const bubble=document.createElement('div');bubble.className=(role==='user'?'bg-gray-50 border border-gray-200':'bg-gray-100')+' msg-bubble markdown-body rounded-none px-4 py-3 w-full';row.appendChild(head);row.appendChild(bubble);el.messages.appendChild(row);queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}));return bubble}
 function renderMarkdown(node,text,opt={enhance:true,highlight:true}){node.innerHTML=md.render(text);if(opt.enhance)enhanceCodeBlocks(node,opt.highlight)}
-function addMessage(m,track=true){const bubble=msgRow(m);renderMarkdown(bubble,m.content);if(track)state.messages.push(m);return bubble}
+function renderAttachments(node,atts){if(!atts||!atts.length)return;const wrap=document.createElement('div');wrap.className='mt-2 flex flex-wrap gap-2';atts.forEach(a=>{const isImg=(a.mime||'').startsWith('image/');const href=a.dataUrl||'';const size=bytes(a.size||0);if(isImg){const item=document.createElement('a');item.href=href;item.download=a.label||'image';item.className='relative group block h-20 w-20 rounded-xl overflow-hidden bg-gray-100 ring-1 ring-gray-200';const img=document.createElement('img');img.src=href;img.alt=a.label||'';img.className='h-full w-full object-cover';const badge=document.createElement('span');badge.textContent=size;badge.className='absolute top-1 right-1 rounded px-1 py-0.5 text-[10px] leading-none bg-black/80 text-white';item.appendChild(img);item.appendChild(badge);wrap.appendChild(item)}else{const ext=((a.label||'').split('.').pop()||'FILE').toUpperCase();const item=document.createElement('a');item.href=href;item.download=a.label||'file';item.className='relative inline-flex items-center gap-2 px-2 py-1 rounded-lg bg-white ring-1 ring-gray-200 hover:bg-gray-50 text-xs';const tag=document.createElement('span');tag.className='h-6 w-6 rounded-md bg-gray-900 text-white flex items-center justify-center text-[10px]';tag.textContent=ext.slice(0,4);const name=document.createElement('span');name.className='truncate max-w-[12rem]';name.textContent=a.label||'file';const badge=document.createElement('span');badge.textContent=size;badge.className='absolute -top-1 -right-1 rounded-full bg-black text-white text-[10px] leading-4 h-4 px-1';item.appendChild(tag);item.appendChild(name);item.appendChild(badge);wrap.appendChild(item)}});node.appendChild(wrap)}
+function addMessage(m,track=true){const bubble=msgRow(m);renderMarkdown(bubble,m.content);if(m.attachments&&m.attachments.length)renderAttachments(bubble,m.attachments);if(track)state.messages.push(m);return bubble}
 const addSuneBubbleStreaming=meta=>msgRow(Object.assign({role:'assistant'},meta))
-const clearChat=()=>{state.messages=[];el.messages.innerHTML=''}
+const clearChat=()=>{state.messages=[];el.messages.innerHTML='';state.attachments=[];updateAttachBadge()}
 const payloadWithSampling=b=>Object.assign({},b,{temperature:store.temperature,top_p:store.top_p,top_k:store.top_k,frequency_penalty:store.frequency_penalty,presence_penalty:store.presence_penalty,repetition_penalty:store.repetition_penalty,min_p:store.min_p,top_a:store.top_a})
 function setBtnStop(){const b=el.sendBtn;b.dataset.mode='stop';b.type='button';b.setAttribute('aria-label','Stop');b.innerHTML='<i data-lucide="square" class="h-5 w-5"></i>';icons();b.onclick=()=>{state.abortRequested=true;state.controller?.abort?.()}}
 function setBtnSend(){const b=el.sendBtn;b.dataset.mode='send';b.type='submit';b.setAttribute('aria-label','Send');b.innerHTML='<i data-lucide="sparkles" class="h-5 w-5"></i>';icons();b.onclick=null}
@@ -154,18 +156,15 @@ let menuThreadId=null;const hideHistoryMenu=()=>{el.historyMenu.classList.add('h
 function showHistoryMenu(btn,id){menuThreadId=id;const r=btn.getBoundingClientRect();el.historyMenu.style.top=(r.bottom+4)+'px';el.historyMenu.style.left=Math.min(window.innerWidth-220,r.right-200)+'px';el.historyMenu.classList.remove('hidden');icons()}
 let menuSuneId=null;const hideSuneMenu=()=>{el.suneMenu.classList.add('hidden');menuSuneId=null}
 function showSuneMenu(btn,id){menuSuneId=id;const r=btn.getBoundingClientRect();el.suneMenu.style.top=(r.bottom+4)+'px';el.suneMenu.style.left=Math.min(window.innerWidth-220,r.right-200)+'px';el.suneMenu.classList.remove('hidden');icons()}
-el.historyList.addEventListener('click',async e=>{const openBtn=e.target.closest('[data-open-thread]'),menuBtn=e.target.closest('[data-thread-menu]');if(openBtn){const id=openBtn.getAttribute('data-open-thread'),th=threads.find(t=>t.id===id)||await idb.get(id);if(!th)return;state.currentThreadId=id;clearChat();state.messages=Array.isArray(th.messages)?[...th.messages]:[];for(const m of state.messages){const b=msgRow(m);renderMarkdown(b,m.content)}queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}));el.historyPanel.classList.add('translate-x-full');el.historyOverlay.classList.add('hidden');hideHistoryMenu();return}if(menuBtn){e.stopPropagation();showHistoryMenu(menuBtn,menuBtn.getAttribute('data-thread-menu'))}})
+el.historyList.addEventListener('click',async e=>{const openBtn=e.target.closest('[data-open-thread]'),menuBtn=e.target.closest('[data-thread-menu]');if(openBtn){const id=openBtn.getAttribute('data-open-thread'),th=threads.find(t=>t.id===id)||await idb.get(id);if(!th)return;state.currentThreadId=id;clearChat();state.messages=Array.isArray(th.messages)?[...th.messages]:[];for(const m of state.messages){const b=msgRow(m);renderMarkdown(b,m.content);if(m.attachments&&m.attachments.length)renderAttachments(b,m.attachments)}queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}));el.historyPanel.classList.add('translate-x-full');el.historyOverlay.classList.add('hidden');hideHistoryMenu();return}if(menuBtn){e.stopPropagation();showHistoryMenu(menuBtn,menuBtn.getAttribute('[data-thread-menu]'))}})
 el.historyMenu.addEventListener('click',async e=>{const act=e.target.closest('[data-action]')?.getAttribute('data-action');if(!act||!menuThreadId)return;const th=threads.find(t=>t.id===menuThreadId)||await idb.get(menuThreadId);if(!th)return;if(act==='pin'){th.pinned=!th.pinned;await idb.put(th)}else if(act==='rename'){const nv=prompt('Rename to:',th.title);if(nv!=null){th.title=titleFrom(nv);th.updatedAt=Date.now();await idb.put(th)}}else if(act==='delete'){if(confirm('Delete this chat?')){await idb.del(th.id);if(state.currentThreadId===th.id){state.currentThreadId=null;clearChat()}}}else if(act==='count_tokens'){const msgs=Array.isArray(th.messages)?th.messages:[];let totalChars=0;for(const m of msgs){if(!m||!m.role||m.role==='system')continue;totalChars+=String(m.content||'').length}const tokens=Math.max(0,Math.ceil(totalChars/4));const k=tokens>=1000?Math.round(tokens/1000)+'k':String(tokens);alert(tokens+' tokens ('+k+')')}hideHistoryMenu();renderHistory()})
-el.suneList.addEventListener('click',e=>{const menuBtn=e.target.closest('[data-sune-menu]');if(menuBtn){e.stopPropagation();showSuneMenu(menuBtn,menuBtn.getAttribute('data-sune-menu'));return}const btn=e.target.closest('[data-sune-id]');if(!btn)return;const id=btn.getAttribute('data-sune-id');if(id){su.setActiveId(id);renderSidebar();reflectActiveSune();state.currentThreadId=null;clearChat();document.getElementById('sidebar').classList.add('-translate-x-full');document.getElementById('sidebarOverlay').classList.add('hidden')}})
+el.suneList.addEventListener('click',e=>{const menuBtn=e.target.closest('[data-sune-menu]');if(menuBtn){e.stopPropagation();showSuneMenu(menuBtn,menuBtn.getAttribute('[data-sune-menu]'));return}const btn=e.target.closest('[data-sune-id]');if(!btn)return;const id=btn.getAttribute('data-sune-id');if(id){su.setActiveId(id);renderSidebar();reflectActiveSune();state.currentThreadId=null;clearChat();document.getElementById('sidebar').classList.add('-translate-x-full');document.getElementById('sidebarOverlay').classList.add('hidden')}})
 el.suneMenu.addEventListener('click',e=>{const act=e.target.closest('[data-action]')?.getAttribute('data-action');if(!act||!menuSuneId)return;const s=sunes.find(x=>x.id===menuSuneId);if(!s)return;if(act==='pin')s.pinned=!s.pinned;else if(act==='rename'){const nv=prompt('Rename sune to:',s.name);if(nv!=null)s.name=nv.trim()||s.name}else if(act==='pfp'){const url=prompt('Image URL:',s.avatar||'');if(url!==null)s.avatar=url.trim()}s.updatedAt=Date.now();su.save(sunes);hideSuneMenu();renderSidebar();reflectActiveSune()})
 function updateAttachBadge(){const n=state.attachments.length;el.attachBadge.textContent=String(n);el.attachBadge.classList.toggle('hidden',n===0)}
-async function fileToPart(file){const name=file.name||'file',type=(file.type||'').toLowerCase();const asDataURL=f=>new Promise(r=>{const fr=new FileReader();fr.onload=()=>r(String(fr.result||''));fr.readAsDataURL(f)});if(type.startsWith('image/')||/\.(png|jpe?g|webp|gif)$/i.test(name)){const url=await asDataURL(file);return {label:name,part:{type:'image_url',image_url:{url:url}}}}
-if(type==='application/pdf'||/\.pdf$/i.test(name)){const dataUrl=await asDataURL(file);const base64=dataUrl.split(',')[1]||'';return {label:name,part:{type:'file',file:{filename:name,file_data:base64}}}}
-if(type.startsWith('audio/')||/\.(wav|mp3)$/i.test(name)){const dataUrl=await asDataURL(file);const base64=dataUrl.split(',')[1]||'';let fmt='wav';if(/mp3/.test(type)||/\.mp3$/i.test(name))fmt='mp3';else if(/wav/.test(type)||/\.wav$/i.test(name))fmt='wav';return {label:name,part:{type:'input_audio',input_audio:{data:base64,format:fmt}}}}
-return null}
-el.attachBtn.addEventListener('click',()=>{if(state.busy)return;el.fileInput.value='';el.fileInput.click()})
+async function fileToPart(file){const name=file.name||'file',mime=(file.type||'').toLowerCase(),size=file.size||0;const asDataURL=f=>new Promise(r=>{const fr=new FileReader();fr.onload=()=>r(String(fr.result||''));fr.readAsDataURL(f)});if(mime.startsWith('image/')||/\.(png|jpe?g|webp|gif)$/i.test(name)){const url=await asDataURL(file);return {label:name,part:{type:'image_url',image_url:{url:url}},dataUrl:url,mime,size}}if(mime==='application/pdf'||/\.pdf$/i.test(name)){const url=await asDataURL(file);const base64=url.split(',')[1]||'';return {label:name,part:{type:'file',file:{filename:name,file_data:base64}},dataUrl:url,mime,size}}if(mime.startsWith('audio/')||/\.(wav|mp3)$/i.test(name)){const url=await asDataURL(file);const base64=url.split(',')[1]||'';let fmt='wav';if(/mp3/.test(mime)||/\.mp3$/i.test(name))fmt='mp3';else if(/wav/.test(mime)||/\.wav$/i.test(name))fmt='wav';return {label:name,part:{type:'input_audio',input_audio:{data:base64,format:fmt}},dataUrl:url,mime,size}}return {label:name,part:null,dataUrl:await asDataURL(file),mime,size}}
+el.attachBtn.addEventListener('click',()=>{if(state.busy)return;state.attachments=[];updateAttachBadge();el.fileInput.value='';el.fileInput.click()})
 el.fileInput.addEventListener('change',async()=>{const files=[...(el.fileInput.files||[])];if(!files.length)return;for(const f of files){const part=await fileToPart(f).catch(()=>null);if(part)state.attachments.push(part)}updateAttachBadge()})
-el.composer.addEventListener('submit',async e=>{e.preventDefault();if(state.busy)return;const text=el.input.value.trim();if(!text&&!state.attachments.length)return;if(state.messages.length===0)state.currentThreadId=null;await ensureThreadOnFirstUser(text||'(attachments)');el.input.value='';const names=state.attachments.map(a=>a.label).join(', ');const display=text+(names?`\n\n**Attachments:** ${esc(names)}`:'');const contentParts=[];if(text)contentParts.push({type:'text',text});state.attachments.forEach(a=>contentParts.push(a.part));addMessage({role:'user',content:display,contentParts});state.busy=true;setBtnStop();const a=getActiveSune();const suneMeta={sune_name:a.name,model:store.model,avatar:a.avatar||''};const suneBubble=addSuneBubbleStreaming(suneMeta);let buf='',completed=false;await askOpenRouterStreaming((delta,done)=>{buf+=delta;renderMarkdown(suneBubble,buf,{enhance:false});if(done&&!completed){completed=true;setBtnSend();state.busy=false;enhanceCodeBlocks(suneBubble,true);state.messages.push({role:'assistant',content:buf,...suneMeta});persistThread();queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}))}});state.attachments=[];updateAttachBadge()})
+el.composer.addEventListener('submit',async e=>{e.preventDefault();if(state.busy)return;const text=el.input.value.trim();if(!text&&!state.attachments.length)return;if(state.messages.length===0)state.currentThreadId=null;await ensureThreadOnFirstUser(text||'(attachments)');el.input.value='';const names=state.attachments.map(a=>a.label).join(', ');const display=text+(names?`\n\n**Attachments:** ${esc(names)}`:'');const contentParts=[];if(text)contentParts.push({type:'text',text});state.attachments.forEach(a=>{if(a.part)contentParts.push(a.part)});const atts=state.attachments.map(a=>({label:a.label,mime:a.mime,size:a.size,dataUrl:a.dataUrl}));addMessage({role:'user',content:display,contentParts,attachments:atts});state.busy=true;setBtnStop();const a=getActiveSune();const suneMeta={sune_name:a.name,model:store.model,avatar:a.avatar||''};const suneBubble=addSuneBubbleStreaming(suneMeta);let buf='',completed=false;await askOpenRouterStreaming((delta,done)=>{buf+=delta;renderMarkdown(suneBubble,buf,{enhance:false});if(done&&!completed){completed=true;setBtnSend();state.busy=false;enhanceCodeBlocks(suneBubble,true);state.messages.push({role:'assistant',content:buf,...suneMeta});persistThread();queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}))}});state.attachments=[];updateAttachBadge()})
 function openSettings(){const a=getActiveSune(),s=a.settings;el.set_model.value=s.model;el.set_temperature.value=s.temperature;el.set_top_p.value=s.top_p;el.set_top_k.value=s.top_k;el.set_frequency_penalty.value=s.frequency_penalty;el.set_presence_penalty.value=s.presence_penalty;el.set_repetition_penalty.value=s.repetition_penalty;el.set_min_p.value=s.min_p;el.set_top_a.value=s.top_a;el.set_reasoning_effort.value=s.reasoning_effort||'default';el.set_system_prompt.value=s.system_prompt;showModelTab();el.settingsModal.classList.remove('hidden')}
 const closeSettings=()=>{el.settingsModal.classList.add('hidden')}
 function showModelTab(){el.tabModel.classList.add('border-black');el.tabPrompt.classList.remove('border-black');el.panelModel.classList.remove('hidden');el.panelPrompt.classList.add('hidden')}