diff --git a/index.html b/index.html
index acba8e3..47a3e5c 100644
--- a/index.html
+++ b/index.html
@@ -79,7 +79,7 @@
       <form id="settingsForm" class="text-sm">
         <div class="border-b flex text-xs font-medium"><button type="button" id="tabModel" class="flex-1 py-2 px-3 text-center border-b-2 border-black">Model & Sampling</button><button type="button" id="tabPrompt" class="flex-1 py-2 px-3 text-center border-b-2 border-transparent hover:border-gray-300">System Prompt</button><button type="button" id="tabScript" class="flex-1 py-2 px-3 text-center border-b-2 border-transparent hover:border-gray-300">Script</button></div>
         <div id="panelModel" class="p-4 space-y-4">
-          <div class="grid grid-cols-2 gap-3"><div><label class="block text-gray-700 font-medium mb-1">Model name</label><input id="set_model" type="text" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="openai/gpt-4o"/><p class="mt-1 text-xs text-gray-500">Find on OpenRouter.</p></div><div><label class="block text-gray-700 font-medium mb-1">Reasoning Effort</label><select id="set_reasoning_effort" class="w-full rounded-xl border border-gray-300 px-3 py-2"><option value="default">Omitted</option><option value="low">Low</option><option value="medium">Medium</option><option value="high">High</option></select><p class="mt-1 text-xs text-gray-500">If supported by the model.</p></div></div>
+          <div class="grid grid-cols-2 gap-3"><div><label class="block text-gray-700 font-medium mb-1">Model name</label><input id="set_model" type="text" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="openai/gpt-4o"/><p class="mt-1 text-xs text-gray-500">Prefix with or: or oai:</p></div><div><label class="block text-gray-700 font-medium mb-1">Reasoning Effort</label><select id="set_reasoning_effort" class="w-full rounded-xl border border-gray-300 px-3 py-2"><option value="default">Omitted</option><option value="low">Low</option><option value="medium">Medium</option><option value="high">High</option></select><p class="mt-1 text-xs text-gray-500">If supported by the model.</p></div></div>
           <div class="grid grid-cols-2 gap-3">
             <div><label class="block text-gray-700 font-medium mb-1">Temperature <span class="text-gray-400">(0–2)</span></label><input id="set_temperature" type="number" min="0" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="1.0"/><p class="mt-1 text-xs text-gray-500">Variety. Lower = predictable.</p></div>
             <div><label class="block text-gray-700 font-medium mb-1">Top P <span class="text-gray-400">(0–1)</span></label><input id="set_top_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="1.0"/><p class="mt-1 text-xs text-gray-500">Nucleus sampling.</p></div>
@@ -122,6 +122,7 @@
         <div><label class="block text-gray-700 font-medium mb-1">OpenRouter API Key</label><input id="set_api_key_or" type="password" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="sk-or-..."/><p class="mt-1 text-xs text-gray-500">Stored locally.</p></div>
         <div><label class="block text-gray-700 font-medium mb-1">OpenAI API Key</label><input id="set_api_key_oai" type="password" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="sk-..."/><p class="mt-1 text-xs text-gray-500">Stored locally.</p></div>
         <div><label class="block text-gray-700 font-medium mb-1">Master Prompt</label><textarea id="set_master_prompt" rows="8" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="Applies to all sunes on this device"></textarea><p class="mt-1 text-xs text-gray-500">Stored locally.</p></div>
+        <div><label class="block text-gray-700 font-medium mb-1">Model preference for titles</label><input id="set_title_model" type="text" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="or:meta-llama/llama-3.2-3b-instruct"/><p class="mt-1 text-xs text-gray-500">Used for auto-generating thread titles.</p></div>
         <div class="flex items-center justify-end gap-2 pt-2 border-t"><button type="button" id="cancelAccountSettings" class="px-3 py-2 rounded-xl border bg-white hover:bg-gray-50">Cancel</button><button type="submit" class="px-3 py-2 rounded-xl bg-black text-white hover:bg-black/90">Save</button></div>
       </form>
     </div>
@@ -133,21 +134,21 @@
 <script src="https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js"></script>
 <script>
 const DEFAULT_MODEL='openai/gpt-5',DEFAULT_API_KEY=''
-const el=Object.fromEntries(['chat','messages','composer','input','sendBtn','settingsBtnTop','settingsModal','settingsForm','closeSettings','cancelSettings','tabModel','tabPrompt','tabScript','panelModel','panelPrompt','panelScript','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_max_tokens','set_verbosity','set_reasoning_effort','set_system_prompt','deleteSuneBtn','sidebar','sidebarOverlay','sidebarBtn','suneList','newSuneBtn','userMenuBtn','userMenu','accountSettingsOption','sunesImportOption','sunesExportOption','threadsImportOption','threadsExportOption','importInput','historyBtn','historyPanel','historyOverlay','historyList','closeHistory','historyMenu','suneMenu','footer','attachBtn','attachBadge','fileInput','scriptEditor','htmlEditor','subTabHTML','subTabJS','panelHTML','panelJS','suneHtml','accountSettingsModal','accountSettingsForm','closeAccountSettings','cancelAccountSettings','set_master_prompt','set_provider','set_api_key_or','set_api_key_oai','copySystemPrompt','pasteSystemPrompt','copyHTML','pasteHTML','copyJS','pasteJS'].map(id=>[id,document.getElementById(id)]))
+const el=Object.fromEntries(['chat','messages','composer','input','sendBtn','settingsBtnTop','settingsModal','settingsForm','closeSettings','cancelSettings','tabModel','tabPrompt','tabScript','panelModel','panelPrompt','panelScript','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_max_tokens','set_verbosity','set_reasoning_effort','set_system_prompt','deleteSuneBtn','sidebar','sidebarOverlay','sidebarBtn','suneList','newSuneBtn','userMenuBtn','userMenu','accountSettingsOption','sunesImportOption','sunesExportOption','threadsImportOption','threadsExportOption','importInput','historyBtn','historyPanel','historyOverlay','historyList','closeHistory','historyMenu','suneMenu','footer','attachBtn','attachBadge','fileInput','scriptEditor','htmlEditor','subTabHTML','subTabJS','panelHTML','panelJS','suneHtml','accountSettingsModal','accountSettingsForm','closeAccountSettings','cancelAccountSettings','set_master_prompt','set_provider','set_api_key_or','set_api_key_oai','set_title_model','copySystemPrompt','pasteSystemPrompt','copyHTML','pasteHTML','copyJS','pasteJS'].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 sid=()=>Date.now().toString(36)+Math.random().toString(36).slice(2,6)
 const fmtSize=b=>{const u=['B','KB','MB','GB','TB'];let i=0,x=b;while(x>=1024&&i<u.length-1){x/=1024;i++}return (x>=10?Math.round(x):Math.round(x*10)/10)+' '+u[i]}
 const asDataURL=f=>new Promise(r=>{const fr=new FileReader();fr.onload=()=>r(String(fr.result||''));fr.readAsDataURL(f)})
 const b64=x=>x.split(',')[1]||''
-const globalStore={get provider(){return localStorage.getItem('provider')||'openrouter'},set provider(v){localStorage.setItem('provider',v==='openai'?'openai':'openrouter')},get apiKeyOR(){return localStorage.getItem('openrouter_api_key')||DEFAULT_API_KEY||''},set apiKeyOR(v){localStorage.setItem('openrouter_api_key',v||'')},get apiKeyOAI(){return localStorage.getItem('openai_api_key')||''},set apiKeyOAI(v){localStorage.setItem('openai_api_key',v||'')},get masterPrompt(){return localStorage.getItem('master_prompt')||''},set masterPrompt(v){localStorage.setItem('master_prompt',v||'')}}
+const globalStore={get provider(){return localStorage.getItem('provider')||'openrouter'},set provider(v){localStorage.setItem('provider',v==='openai'?'openai':'openrouter')},get apiKeyOR(){return localStorage.getItem('openrouter_api_key')||DEFAULT_API_KEY||''},set apiKeyOR(v){localStorage.setItem('openrouter_api_key',v||'')},get apiKeyOAI(){return localStorage.getItem('openai_api_key')||''},set apiKeyOAI(v){localStorage.setItem('openai_api_key',v||'')},get masterPrompt(){return localStorage.getItem('master_prompt')||''},set masterPrompt(v){localStorage.setItem('master_prompt',v||'')},get titleModel(){return localStorage.getItem('title_model')??'or:meta-llama/llama-3.2-3b-instruct'},set titleModel(v){localStorage.setItem('title_model',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,max_tokens:0,verbosity:'',reasoning_effort:'default',system_prompt:'',script:'',html:''}
 const makeSune=(p={})=>({id:p.id||gid(),name:p.name?.trim()||'Default',pinned:!!p.pinned,avatar:p.avatar||'',updatedAt:p.updatedAt||Date.now(),settings:Object.assign({},defaultSettings,p.settings||{})})
 let sunes=(su.load()||[]).map(makeSune)
 if(!sunes.length){const def=makeSune({name:'Default'});sunes=[def];su.save(sunes);su.setActiveId(def.id)}
 const getActiveSune=()=>sunes.find(a=>a.id===su.getActiveId())||sunes[0],createDefaultSune=()=>makeSune({name:'Default'})
-const store=new Proxy({},{get(_,p){if(p==='provider')return globalStore.provider;if(p==='apiKey')return globalStore.provider==='openai'?globalStore.apiKeyOAI:globalStore.apiKeyOR;if(p==='apiKeyOR')return globalStore.apiKeyOR;if(p==='apiKeyOAI')return globalStore.apiKeyOAI;if(p==='masterPrompt')return globalStore.masterPrompt;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==='provider'){globalStore.provider=v;return true}if(p==='apiKey'){if(globalStore.provider==='openai')globalStore.apiKeyOAI=v;else globalStore.apiKeyOR=v;return true}if(p==='apiKeyOR'){globalStore.apiKeyOR=v;return true}if(p==='apiKeyOAI'){globalStore.apiKeyOAI=v;return true}if(p==='masterPrompt'){globalStore.masterPrompt=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;sunes[i].updatedAt=Date.now();su.save(sunes);return true}return false}})
+const store=new Proxy({},{get(_,p){if(p==='provider')return globalStore.provider;if(p==='apiKey')return globalStore.provider==='openai'?globalStore.apiKeyOAI:globalStore.apiKeyOR;if(p==='apiKeyOR')return globalStore.apiKeyOR;if(p==='apiKeyOAI')return globalStore.apiKeyOAI;if(p==='masterPrompt')return globalStore.masterPrompt;if(p==='titleModel')return globalStore.titleModel;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==='provider'){globalStore.provider=v;return true}if(p==='apiKey'){if(globalStore.provider==='openai')globalStore.apiKeyOAI=v;else globalStore.apiKeyOR=v;return true}if(p==='apiKeyOR'){globalStore.apiKeyOR=v;return true}if(p==='apiKeyOAI'){globalStore.apiKeyOAI=v;return true}if(p==='masterPrompt'){globalStore.masterPrompt=v;return true}if(p==='titleModel'){globalStore.titleModel=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;sunes[i].updatedAt=Date.now();su.save(sunes);return true}return false}})
 const state={messages:[],busy:false,controller:null,currentThreadId:null,abortRequested:false,attachments:[],stream:{rid:null,bubble:null,meta:null,text:'',done:false}}
 const getModelShort=m=>{const mm=m||store.model||'';return mm.includes('/')?mm.split('/').pop():mm}
 const renderSuneHTML=()=>{const m=el.suneHtml,h=(getActiveSune().settings.html||'').trim();m.innerHTML='';m.classList.toggle('hidden',!h);if(!h)return;m.insertAdjacentHTML('afterbegin',h);m.querySelectorAll('script').forEach(s=>{const n=document.createElement('script');[...s.attributes].forEach(a=>n.setAttribute(a.name,a.value));n.text=s.text; s.replaceWith(n)})}
@@ -226,15 +227,15 @@ async function init(){threads=await tload();await renderHistory();renderSidebar(
 window.addEventListener('resize',()=>{hideHistoryMenu();hideSuneMenu()})
 init()
 const HTTP_BASE='https://orp.awww.workers.dev/ws'
-const buildBody=()=>{const msgs=[];if(store.masterPrompt)msgs.push({role:'system',content:[{type:'text',text:store.masterPrompt}]});if(store.system_prompt)msgs.push({role:'system',content:[{type:'text',text:store.system_prompt}]});msgs.push(...state.messages.filter(m=>m.role!=='system').map(m=>({role:m.role,content:m.content})));const b=payloadWithSampling({model:store.model,messages:msgs,stream:true});if(store.reasoning_effort&&store.reasoning_effort!=='default')b.reasoning={effort:store.reasoning_effort};if(store.verbosity)b.verbosity=store.verbosity;return b}
-async function askOpenRouterStreaming(onDelta,streamId){if(!store.apiKey){const t=localDemoReply();onDelta(t,true);return {ok:true,rid:streamId||null}}const r={rid:streamId||gid(),seq:-1,done:false,signaled:false,ws:null};await cacheStore.setItem(r.rid,'busy');const signal=t=>{if(!r.signaled){r.signaled=true;onDelta(t||'',true)}};const ws=new WebSocket(HTTP_BASE.replace('https','wss')+'?uid='+encodeURIComponent(r.rid));r.ws=ws;ws.onopen=()=>ws.send(JSON.stringify({type:'begin',rid:r.rid,provider:store.provider,apiKey:store.apiKey,or_body:buildBody()}));ws.onmessage=e=>{let m;try{m=JSON.parse(e.data)}catch{return}if(m.type==='delta'&&typeof m.seq==='number'&&m.seq>r.seq){r.seq=m.seq;onDelta(m.text||'',false)}else if(m.type==='done'||m.type==='err'){r.done=true;cacheStore.setItem(r.rid,'done');signal(m.type==='err'?'\n\n'+(m.message||'error'):'');ws.close()}};ws.onclose=()=>{};ws.onerror=()=>{};state.controller={abort:()=>{r.done=true;cacheStore.setItem(r.rid,'done');try{if(ws.readyState===1)ws.send(JSON.stringify({type:'stop',rid:r.rid}))}catch{};signal('')},disconnect:()=>ws.close()};return {ok:true,rid:r.rid}}
-function openAccountSettings(){el.set_provider.value=store.provider||'openrouter';el.set_api_key_or.value=store.apiKeyOR||'';el.set_api_key_oai.value=store.apiKeyOAI||'';el.set_master_prompt.value=store.masterPrompt||'';el.accountSettingsModal.classList.remove('hidden')}
+const buildBody=()=>{const msgs=[];if(store.masterPrompt)msgs.push({role:'system',content:[{type:'text',text:store.masterPrompt}]});if(store.system_prompt)msgs.push({role:'system',content:[{type:'text',text:store.system_prompt}]});msgs.push(...state.messages.filter(m=>m.role!=='system').map(m=>({role:m.role,content:m.content})));const b=payloadWithSampling({model:store.model.replace(/^(or:|oai:)/,''),messages:msgs,stream:true});if(store.reasoning_effort&&store.reasoning_effort!=='default')b.reasoning={effort:store.reasoning_effort};if(store.verbosity)b.verbosity=store.verbosity;return b}
+async function askOpenRouterStreaming(onDelta,streamId){const model=store.model,provider=model.startsWith('oai:')?'openai':model.startsWith('or:')?'openrouter':store.provider,apiKey=provider==='openai'?store.apiKeyOAI:store.apiKeyOR;if(!apiKey){onDelta(localDemoReply(),true);return {ok:true,rid:streamId||null}}const r={rid:streamId||gid(),seq:-1,done:false,signaled:false,ws:null};await cacheStore.setItem(r.rid,'busy');const signal=t=>{if(!r.signaled){r.signaled=true;onDelta(t||'',true)}};const ws=new WebSocket(HTTP_BASE.replace('https','wss')+'?uid='+encodeURIComponent(r.rid));r.ws=ws;ws.onopen=()=>ws.send(JSON.stringify({type:'begin',rid:r.rid,provider,apiKey,or_body:buildBody()}));ws.onmessage=e=>{let m;try{m=JSON.parse(e.data)}catch{return}if(m.type==='delta'&&typeof m.seq==='number'&&m.seq>r.seq){r.seq=m.seq;onDelta(m.text||'',false)}else if(m.type==='done'||m.type==='err'){r.done=true;cacheStore.setItem(r.rid,'done');signal(m.type==='err'?'\n\n'+(m.message||'error'):'');ws.close()}};ws.onclose=()=>{};ws.onerror=()=>{};state.controller={abort:()=>{r.done=true;cacheStore.setItem(r.rid,'done');try{if(ws.readyState===1)ws.send(JSON.stringify({type:'stop',rid:r.rid}))}catch{};signal('')},disconnect:()=>ws.close()};return {ok:true,rid:r.rid}}
+function openAccountSettings(){el.set_provider.value=store.provider||'openrouter';el.set_api_key_or.value=store.apiKeyOR||'';el.set_api_key_oai.value=store.apiKeyOAI||'';el.set_master_prompt.value=store.masterPrompt||'';el.set_title_model.value=store.titleModel;el.accountSettingsModal.classList.remove('hidden')}
 function closeAccountSettings(){el.accountSettingsModal.classList.add('hidden')}
 el.accountSettingsOption.addEventListener('click',()=>{el.userMenu.classList.add('hidden');openAccountSettings()})
 el.closeAccountSettings.addEventListener('click',closeAccountSettings)
 el.cancelAccountSettings.addEventListener('click',closeAccountSettings)
 el.accountSettingsModal.addEventListener('click',e=>{if(e.target===el.accountSettingsModal||e.target.classList.contains('bg-black/30'))closeAccountSettings()})
-el.accountSettingsForm.addEventListener('submit',e=>{e.preventDefault();store.provider=el.set_provider.value||'openrouter';store.apiKeyOR=String(el.set_api_key_or.value||'').trim();store.apiKeyOAI=String(el.set_api_key_oai.value||'').trim();store.masterPrompt=String(el.set_master_prompt.value||'').trim();closeAccountSettings()})
+el.accountSettingsForm.addEventListener('submit',e=>{e.preventDefault();store.provider=el.set_provider.value||'openrouter';store.apiKeyOR=String(el.set_api_key_or.value||'').trim();store.apiKeyOAI=String(el.set_api_key_oai.value||'').trim();store.masterPrompt=String(el.set_master_prompt.value||'').trim();store.titleModel=String(el.set_title_model.value||'').trim();closeAccountSettings()})
 const lastAssistantId=()=>{const a=[...el.messages.querySelectorAll('.msg-bubble')];for(let i=a.length-1;i>=0;i--){const b=a[i],h=b.previousElementSibling;if(!h)continue;const you=/^\s*You\b/.test(h.textContent||'');if(!you)return b.dataset.mid||null}return null}
 const getBubbleById=id=>el.messages.querySelector(`.msg-bubble[data-mid="${CSS.escape(id)}"]`)
 async function syncActiveThread(){const id=lastAssistantId();if(!id)return false;if(await cacheStore.getItem(id)==='done'){if(state.busy){setBtnSend();state.busy=false;state.controller=null}return false}if(!state.busy){state.busy=true;state.controller={abort:()=>{const ws=new WebSocket(HTTP_BASE.replace('https','wss'));ws.onopen=function(){this.send(JSON.stringify({type:'stop',rid:id}));this.close()}}};setBtnStop()}const bubble=getBubbleById(id);if(!bubble)return false;const prevText=bubble.textContent||'';const j=await(fetch(HTTP_BASE+'?uid='+encodeURIComponent(id)).then(r=>r.ok?r.json():null).catch(()=>null));const finalise=(t,c)=>{renderMarkdown(bubble,t,{enhance:false});enhanceCodeBlocks(bubble,true);const i=state.messages.findIndex(x=>x.id===id);if(i>=0)state.messages[i].content=c;else state.messages.push({id,role:'assistant',content:c,...activeMeta()});persistThread();setBtnSend();state.busy=false;cacheStore.setItem(id,'done');state.controller=null};if(!j||j.rid!==id){if(j&&j.error){const t=prevText+'\n\n'+j.error;finalise(t,[{type:'text',text:t}])}return false}const text=j.text||'',isDone=j.error||j.done||j.phase==='done';if(text)renderMarkdown(bubble,text,{enhance:false});if(isDone){const finalText=text||prevText;finalise(finalText,[{type:'text',text:finalText}]);return false}await cacheStore.setItem(id,'busy');return true}