diff --git a/index.html b/index.html
index ad6756b..c5b4654 100644
--- a/index.html
+++ b/index.html
@@ -111,6 +111,7 @@
 <script>
 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_system_prompt','deleteSuneBtn','sidebar','sidebarOverlay','sidebarBtn','suneList','newSuneBtn','userMenuBtn','userMenu','apiKeyOption','sunesImportOption','sunesExportOption','threadsImportOption','threadsExportOption','threadsDedupOption','importInput','historyBtn','historyPanel','historyOverlay','historyList','closeHistory','historyMenu','suneMenu','footer'].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 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||'')}}
@@ -122,9 +123,9 @@ const getActiveSune=()=>sunes.find(a=>a.id===su.getActiveId())||sunes[0],createD
 const store=new Proxy({},{get(_,p){if(p==='apiKey')return globalStore.apiKey;const a=getActiveSune();if(p==='model')return a.settings.model;if(p in a.settings)return a.settings[p];if(p==='system_prompt')return a.settings.system_prompt},set(_,p,v){if(p==='apiKey'){globalStore.apiKey=v;return true}const i=sunes.findIndex(a=>a.id===getActiveSune().id);if(i>=0){if(p==='model')sunes[i].settings.model=v||DEFAULT_MODEL;else if(p==='system_prompt')sunes[i].settings.system_prompt=v||'';else sunes[i].settings[p]=v;su.save(sunes);return true}return false}})
 const state={messages:[],busy:false,controller:null,currentThreadId:null,abortRequested:false}
 const getModelShort=m=>{const mm=m||store.model||'';return mm.includes('/')?mm.split('/').pop():mm}
-const reflectActiveSune=()=>{const a=getActiveSune();el.settingsBtnTop.title=`Settings — ${a.name}`;el.settingsBtnTop.innerHTML=a.avatar?`<img src="${esc(a.avatar)}" alt="" class="h-8 w-8 rounded-full object-cover"/>`:'✺';if(window.lucide)lucide.createIcons()}
+const reflectActiveSune=()=>{const a=getActiveSune();el.settingsBtnTop.title=`Settings — ${a.name}`;el.settingsBtnTop.innerHTML=a.avatar?`<img src="${esc(a.avatar)}" alt="" class="h-8 w-8 rounded-full object-cover"/>`:'✺';icons()}
 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 ${a.id===su.getActiveId()?'font-medium':''}">${a.avatar?`<img src="${esc(a.avatar)}" alt="" class="h-6 w-6 rounded-full object-cover"/>`:`<span class="h-6 w-6 rounded-full bg-gray-200 flex items-center justify-center">✺</span>`}<span class="truncate">${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=()=>{const list=[...sunes].sort((a,b)=>(b.pinned-a.pinned));el.suneList.innerHTML=list.map(suneRow).join('');if(window.lucide)lucide.createIcons()}
+const renderSidebar=()=>{const list=[...sunes].sort((a,b)=>(b.pinned-a.pinned));el.suneList.innerHTML=list.map(suneRow).join('');icons()}
 function enhanceCodeBlocks(root,doHL=true){root.querySelectorAll('pre>code').forEach(code=>{if(code.textContent.length>200000)return;const pre=code.parentElement;pre.classList.add('relative','rounded-xl','border','border-gray-200');if(!pre.querySelector('.copy-btn')){const btn=document.createElement('button');btn.className='copy-btn';btn.textContent='Copy';btn.addEventListener('click',async e=>{e.stopPropagation();try{await navigator.clipboard.writeText(code.innerText);btn.textContent='Copied';setTimeout(()=>btn.textContent='Copy',1200)}catch{}});pre.appendChild(btn)}if(doHL&&window.hljs&&code.textContent.length<100000)hljs.highlightElement(code)})}
 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}`}
@@ -134,20 +135,20 @@ function addMessage(m,track=true){const bubble=msgRow(m);renderMarkdown(bubble,m
 const addSuneBubbleStreaming=meta=>msgRow(Object.assign({role:'assistant'},meta))
 const clearChat=()=>{state.messages=[];el.messages.innerHTML=''}
 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='<svg viewBox="0 0 24 24" class="h-5 w-5" fill="currentColor"><rect x="7" y="7" width="10" height="10" rx="1"/></svg>';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>';if(window.lucide)lucide.createIcons();b.onclick=null}
+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}
 async function askOpenRouterStreaming(onDelta){const apiKey=store.apiKey,model=store.model;if(!apiKey){const text=localDemoReply(state.messages[state.messages.length-1]?.content||'');onDelta(text,true);return {ok:true,text}}try{state.controller=new AbortController();const msgs=[];if(store.system_prompt)msgs.push({role:'system',content:store.system_prompt});msgs.push(...state.messages.filter(m=>m.role!=='system').map(m=>({role:m.role,content:m.content})));const body=payloadWithSampling({model,messages:msgs,stream:true});const res=await fetch('https://openrouter.ai/api/v1/chat/completions',{method:'POST',headers:{'Content-Type':'application/json','Authorization':'Bearer '+apiKey},body:JSON.stringify(body),signal:state.controller.signal});if(!res.ok){const errText=await res.text().catch(()=> '');throw new Error(errText||('HTTP '+res.status))}const reader=res.body.getReader(),decoder=new TextDecoder('utf-8');let buffer='',full='',finished=false;const doneOnce=()=>{if(finished)return;finished=true;onDelta('',true)};while(true){const {value,done}=await reader.read();if(done)break;buffer+=decoder.decode(value,{stream:true});let idx;while((idx=buffer.indexOf('\n\n'))!==-1){const chunk=buffer.slice(0,idx).trim();buffer=buffer.slice(idx+2);if(!chunk)continue;if(chunk.startsWith('data:')){const data=chunk.slice(5).trim();if(data==='[DONE]'){doneOnce();continue}try{const json=JSON.parse(data);const delta=json.choices?.[0]?.delta?.content??'';if(delta){full+=delta;onDelta(delta,false)}const finish=json.choices?.[0]?.finish_reason;if(finish)doneOnce()}catch{}}}}doneOnce();return {ok:true,text:full}}catch(e){const msg=String(e?.message||e),aborted=e?.name==='AbortError'||/abort/i.test(msg)||state.controller?.signal?.aborted||state.abortRequested;if(aborted){onDelta('',true);return {ok:false,text:'',aborted:true}}let hint='Request failed.';if(/401|unauthorized/i.test(msg))hint='Unauthorized (check API key).';else if(/429|rate/i.test(msg))hint='Rate limited (slow down or upgrade).';else if(/access|forbidden|403/i.test(msg))hint='Forbidden (model or key scope).';const fallback='\n\n'+hint;onDelta(fallback,true);return {ok:false,text:fallback}}finally{state.controller=null;state.abortRequested=false}}
-function localDemoReply(prompt){const tips=['Tip: open the sidebar → Account & Backup to set your OpenRouter API key.','Click 🤖 to change model & sampling.'],tip=tips[Math.floor(Math.random()*tips.length)],mirrored=prompt.split(/\s+/).slice(0,24).join(' ');return `Local demo mode. You said: "${mirrored}"\n\n${tip}`}
+function localDemoReply(){return 'Tip: open the sidebar → Account & Backup to set your OpenRouter API key.'}
 const idb={db:null,open(){return new Promise((res,rej)=>{const r=indexedDB.open('chat_history_v1',1);r.onupgradeneeded=()=>{r.result.createObjectStore('threads',{keyPath:'id'})};r.onsuccess=()=>{this.db=r.result;res()};r.onerror=()=>rej(r.error)})},all(){return new Promise((res,rej)=>{const tx=this.db.transaction('threads').objectStore('threads').getAll();tx.onsuccess=()=>res(tx.result||[]);tx.onerror=()=>rej(tx.error)})},get(id){return new Promise((res,rej)=>{const tx=this.db.transaction('threads').objectStore('threads').get(id);tx.onsuccess=()=>res(tx.result||null);tx.onerror=()=>rej(tx.error)})},put(v){return new Promise((res,rej)=>{const tx=this.db.transaction('threads','readwrite').objectStore('threads').put(v);tx.onsuccess=()=>res();tx.onerror=()=>rej(tx.error)})},del(id){return new Promise((res,rej)=>{const tx=this.db.transaction('threads','readwrite').objectStore('threads').delete(id);tx.onsuccess=()=>res();tx.onerror=()=>rej(tx.error)})}}
 let threads=[];const titleFrom=t=>(t||'').replace(/\s+/g,' ').trim().slice(0,60)||'Untitled'
 async function ensureThreadOnFirstUser(text){let needNew=!state.currentThreadId;if(state.messages.length===0)state.currentThreadId=null;if(state.currentThreadId){const existing=await idb.get(state.currentThreadId);if(!existing)needNew=true}if(!needNew)return;const id=gid(),now=Date.now();const th={id,title:titleFrom(text),pinned:false,createdAt:now,updatedAt:now,messages:[]};state.currentThreadId=id;threads.unshift(th);await idb.put(th);await renderHistory()}
 async function persistThread(){if(!state.currentThreadId)return;let th=threads.find(x=>x.id===state.currentThreadId)||await idb.get(state.currentThreadId);if(!th)return;th.messages=[...state.messages];th.updatedAt=Date.now();th.title=titleFrom(th.messages.find(m=>m.role==='user')?.content||th.title);await idb.put(th);await renderHistory()}
 const historyRow=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 renderHistory(){threads=(await idb.all()).sort((a,b)=>(b.pinned-a.pinned)||(b.updatedAt-a.updatedAt));el.historyList.innerHTML=threads.map(historyRow).join('');if(window.lucide)lucide.createIcons()}
+async function renderHistory(){threads=(await idb.all()).sort((a,b)=>(b.pinned-a.pinned)||(b.updatedAt-a.updatedAt));el.historyList.innerHTML=threads.map(historyRow).join('');icons()}
 let menuThreadId=null;const hideHistoryMenu=()=>{el.historyMenu.classList.add('hidden');menuThreadId=null}
-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');if(window.lucide)lucide.createIcons()}
+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');if(window.lucide)lucide.createIcons()}
+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.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);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()}}}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')}})
@@ -172,7 +173,7 @@ el.tabPrompt.addEventListener('click',showPromptTab)
 el.settingsForm.addEventListener('submit',e=>{e.preventDefault();const a=getActiveSune(),s=a.settings;s.model=(el.set_model.value||DEFAULT_MODEL).trim();s.temperature=clamp(num(el.set_temperature.value,1.0),0,2);s.top_p=clamp(num(el.set_top_p.value,1.0),0,1);s.top_k=Math.max(0,int(el.set_top_k.value,0));s.frequency_penalty=clamp(num(el.set_frequency_penalty.value,0.0),-2,2);s.presence_penalty=clamp(num(el.set_presence_penalty.value,0.0),-2,2);s.repetition_penalty=clamp(num(el.set_repetition_penalty.value,1.0),0,2);s.min_p=clamp(num(el.set_min_p.value,0.0),0,1);s.top_a=clamp(num(el.set_top_a.value,0.0),0,1);s.system_prompt=el.set_system_prompt.value.trim();su.save(sunes);closeSettings();reflectActiveSune()})
 el.deleteSuneBtn.addEventListener('click',()=>{const activeId=su.getActiveId(),active=getActiveSune(),name=active?.name||'this sune';if(!confirm(`Delete "${name}"?`))return;sunes=sunes.filter(a=>a.id!==activeId);su.save(sunes);if(sunes.length===0){const def=createDefaultSune();sunes=[def];su.save(sunes);su.setActiveId(def.id)}else{su.setActiveId(sunes[0].id)}renderSidebar();reflectActiveSune();state.currentThreadId=null;clearChat();closeSettings()})
 el.newSuneBtn.addEventListener('click',()=>{const name=prompt('Name your sune:');if(!name)return;const id=gid();sunes.unshift({id,name:name.trim(),pinned:false,avatar:'',settings:Object.assign({},defaultSettings)});su.save(sunes);su.setActiveId(id);renderSidebar();reflectActiveSune();state.currentThreadId=null;clearChat();document.getElementById('sidebar').classList.add('-translate-x-full');document.getElementById('sidebarOverlay').classList.add('hidden')})
-el.apiKeyOption.addEventListener('click',()=>{el.userMenu.classList.add('hidden');const cur=store.apiKey?'********':'',input=prompt('Enter OpenRouter API key (stored locally):',cur);if(input!==null){store.apiKey=input==='********'?store.apiKey:input.trim();alert(store.apiKey?'API key saved locally.':'API key cleared.')}})
+el.apiKeyOption.addEventListener('click',()=>{el.userMenu.classList.add('hidden');const cur=store.apiKey?'********':'';const input=prompt('Enter OpenRouter API key (stored locally):',cur);if(input!==null){store.apiKey=input==='********'?store.apiKey:input.trim();alert(store.apiKey?'API key saved locally.':'API key cleared.')}})
 function dl(name,obj){const blob=new Blob([JSON.stringify(obj,null,2)],{type:'application/json'}),url=URL.createObjectURL(blob),a=document.createElement('a');a.href=url;a.download=name;document.body.appendChild(a);a.click();a.remove();URL.revokeObjectURL(url)}
 const ts=()=>{const d=new Date(),p=n=>String(n).padStart(2,'0');return `${d.getFullYear()}${p(d.getMonth()+1)}${p(d.getDate())}-${p(d.getHours())}${p(d.getMinutes())}${p(d.getSeconds())}`}
 let importMode=null
@@ -184,7 +185,7 @@ el.threadsDedupOption.addEventListener('click',async()=>{el.userMenu.classList.a
 el.importInput.addEventListener('change',async()=>{const file=el.importInput.files?.[0];if(!file)return;try{const text=await file.text();const data=JSON.parse(text);if(importMode==='sunes'){const list=Array.isArray(data)?data:(Array.isArray(data.sunes)?data.sunes:[]);if(!list.length)throw new Error('No sunes');let added=0;for(const a of list){const s=makeSune(a||{});if(sunes.some(x=>x.id===s.id))s.id=gid();sunes.push(s);added++}su.save(sunes);if(data.activeId&&sunes.some(x=>x.id===data.activeId))su.setActiveId(data.activeId);renderSidebar();reflectActiveSune();state.currentThreadId=null;clearChat();alert(`${added} sune${added===1?'':'s'} imported.`)}else if(importMode==='threads'){const arr=Array.isArray(data)?data:(Array.isArray(data.threads)?data.threads:[]);if(!arr.length)throw new Error('No threads');for(const t of arr){const th={id:gid(),title:titleFrom(t.title||titleFrom(t.messages?.find?.(m=>m.role==='user')?.content||'')),pinned:!!t.pinned,createdAt:t.createdAt||Date.now(),updatedAt:t.updatedAt||Date.now(),messages:Array.isArray(t.messages)?t.messages.filter(m=>m&&m.role&&m.content):[]};await idb.put(th)}await renderHistory();alert('Threads imported.')}el.userMenu.classList.add('hidden')}catch{alert('Import failed')}finally{importMode=null}})
 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)}))}
-async function init(){await idb.open();await renderHistory();renderSidebar();reflectActiveSune();clearChat();if(window.lucide)lucide.createIcons();fit();kbBind();kbUpdate()}
+async function init(){await idb.open();await renderHistory();renderSidebar();reflectActiveSune();clearChat();icons();fit();kbBind();kbUpdate()}
 window.addEventListener('resize',()=>{hideHistoryMenu();hideSuneMenu()})
 init()
 </script>