diff --git a/docs/index.html b/docs/index.html
index 33ad428..72d1d1e 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -2,94 +2,414 @@
 
 <html lang="en">
 <head>
-<meta charset="utf-8"/>
-<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"/>
-<title>ChatGPT — Mobile Clone (Light)</title>
-<script src="https://cdn.tailwindcss.com"></script>
-<style>:root{--safe-bottom:env(safe-area-inset-bottom)}::-webkit-scrollbar{height:8px;width:8px}::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:999px}.no-scrollbar::-webkit-scrollbar{display:none}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}</style>
+  <meta charset="utf-8"/>
+  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"/>
+  <title>ChatGPT — Mobile Clone (Light)</title>
+  <script src="https://cdn.tailwindcss.com"></script>
+  <style>
+    :root{--safe-bottom:env(safe-area-inset-bottom)}
+    ::-webkit-scrollbar{height:8px;width:8px}
+    ::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:999px}
+    .no-scrollbar::-webkit-scrollbar{display:none}
+    .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
+  </style>
 </head>
 <body class="bg-white text-gray-900 selection:bg-black/10">
-<div class="flex flex-col h-dvh max-h-dvh">
-  <header class="sticky top-0 z-10 bg-white/80 backdrop-blur border-b border-gray-200">
-    <div class="mx-auto w-full max-w-2xl px-4 py-3 grid grid-cols-3 items-center">
-      <button id="newChatBtn" title="New chat" class="h-8 w-8 rounded-xl bg-gray-100 hover:bg-gray-200 active:scale-[.99] transition flex items-center justify-center"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M12 6v12M6 12h12"/></svg></button>
-      <button id="settingsBtnTop" title="Assistant settings" class="justify-self-center h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center hover:bg-gray-300 active:scale-[.99] transition">🤖</button>
-      <button id="apiBadge" title="Set OpenRouter API key" class="justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200"><svg viewBox="0 0 24 24" class="h-4 w-4" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M15 7a4 4 0 11-7.999.001A4 4 0 0115 7zm-.293 6.707L9 19.414V22h2.586l5.707-5.707a1 1 0 000-1.414l-1.586-1.586a1 1 0 00-1.414 0z"/></svg><span id="statusText" class="sr-only">offline</span></button>
-    </div>
-  </header>
-  <main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
-    <div id="messages" class="mx-auto w-full max-w-2xl px-4 py-4 sm:py-6 space-y-4"></div>
-    <div class="h-24"></div>
-  </main>
-  <footer class="sticky bottom-0 bg-gradient-to-t from-white via-white/95 to-white/40 pt-3 pb-[calc(12px+var(--safe-bottom))] border-t border-gray-200">
-    <div class="mx-auto w-full max-w-2xl px-4">
-      <form id="composer" class="group relative flex items-end gap-2">
-        <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true" class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-black/20 focus:border-gray-300 max-h-40"></textarea>
-        <button id="sendBtn" type="submit" aria-label="Send" class="shrink-0 rounded-2xl bg-black text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-black/90 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/></svg></button>
-      </form>
-      <div class="mt-2 flex items-center justify-end text-xs text-gray-500"><div class="flex items-center gap-3"><button id="stopBtn" class="underline decoration-dotted hover:text-gray-700 hidden">Stop</button><button id="clearBtn" class="underline decoration-dotted hover:text-gray-700">Clear</button></div></div>
-    </div>
-  </footer>
-</div>
-<div id="settingsModal" class="hidden fixed inset-0 z-50">
-  <div class="absolute inset-0 bg-black/30"></div>
-  <div class="absolute inset-x-0 top-12 mx-auto w-full max-w-md px-4">
-    <div class="rounded-2xl bg-white shadow-xl border border-gray-200 overflow-hidden">
-      <div class="px-4 py-3 border-b text-sm font-semibold flex items-center justify-between"><span>Assistant Settings</span><button id="closeSettings" class="p-1 rounded hover:bg-gray-100" aria-label="Close"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg></button></div>
-      <form id="settingsForm" class="text-sm">
-        <div class="border-b flex text-sm 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></div>
-        <div id="panelModel" class="p-4 space-y-4">
-          <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 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="openai/gpt-4o"/></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>
-            <div><label class="block text-gray-700 font-medium mb-1">Top K</label><input id="set_top_k" type="number" min="0" step="1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0"/><p class="mt-1 text-xs text-gray-500">Token shortlist size.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Frequency Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_frequency_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage repeats by count.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Presence Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_presence_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage seen tokens.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Repetition Penalty <span class="text-gray-400">(0–2)</span></label><input id="set_repetition_penalty" 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">Reduce verbatim echoes.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Min P <span class="text-gray-400">(0–1)</span></label><input id="set_min_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Minimum token prob vs best.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Top A <span class="text-gray-400">(0–1)</span></label><input id="set_top_a" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Adaptive nucleus filter.</p></div>
-          </div>
-        </div>
-        <div id="panelPrompt" class="p-4 space-y-4 hidden">
-          <div><label class="block text-gray-700 font-medium mb-1">System Prompt</label><textarea id="set_system_prompt" rows="8" class="w-full rounded-xl border border-gray-300 px-3 py-2 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="Enter a system prompt to guide the assistant"></textarea><p class="mt-1 text-xs text-gray-500">Saved locally; sent as a system message with each request.</p></div>
-        </div>
-        <div class="flex items-center justify-end gap-2 px-4 py-3 border-t"><button type="button" id="cancelSettings" 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 class="flex flex-col h-dvh max-h-dvh">
+    <!-- Header -->
+    <header class="sticky top-0 z-20 bg-white/80 backdrop-blur border-b border-gray-200">
+      <div class="mx-auto w-full max-w-2xl px-4 py-3 grid grid-cols-3 items-center">
+        <!-- Sidebar toggle (left) -->
+        <button id="sidebarBtn" class="h-8 w-8 rounded-xl bg-gray-100 hover:bg-gray-200 active:scale-[.99] transition flex items-center justify-center" title="Assistants">
+          <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M4 6h16M4 12h16M4 18h16"/></svg>
+        </button>
+        <!-- Active assistant (center) -->
+        <button id="settingsBtnTop" class="justify-self-center h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center hover:bg-gray-300 active:scale-[.99] transition" title="Assistant settings">🤖</button>
+        <!-- API key badge (right) -->
+        <button id="apiBadge" title="Set OpenRouter API key" class="justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200">
+          <svg viewBox="0 0 24 24" class="h-4 w-4" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M15 7a4 4 0 11-7.999.001A4 4 0 0115 7zm-.293 6.707L9 19.414V22h2.586l5.707-5.707a1 1 0 000-1.414l-1.586-1.586a1 1 0 00-1.414 0z"/></svg>
+          <span id="statusText" class="sr-only">offline</span>
+        </button>
+      </div>
+    </header><!-- Messages -->
+<main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
+  <div id="messages" class="mx-auto w-full max-w-2xl px-4 py-4 sm:py-6 space-y-4"></div>
+  <div class="h-24"></div>
+</main>
+
+<!-- Input Dock -->
+<footer class="sticky bottom-0 z-10 bg-gradient-to-t from-white via-white/95 to-white/40 pt-3 pb-[calc(12px+var(--safe-bottom))] border-t border-gray-200">
+  <div class="mx-auto w-full max-w-2xl px-4">
+    <form id="composer" class="group relative flex items-end gap-2">
+      <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true" class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-black/20 focus:border-gray-300 max-h-40"></textarea>
+      <button id="sendBtn" type="submit" aria-label="Send" class="shrink-0 rounded-2xl bg-black text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-black/90 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed">
+        <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/></svg>
+      </button>
+    </form>
+    <div class="mt-2 flex items-center justify-end text-xs text-gray-500">
+      <div class="flex items-center gap-3">
+        <button id="stopBtn" class="underline decoration-dotted hover:text-gray-700 hidden">Stop</button>
+        <button id="clearBtn" class="underline decoration-dotted hover:text-gray-700">Clear</button>
+      </div>
     </div>
   </div>
-</div>
-<script>
-const DEFAULT_MODEL='openai/gpt-4o',DEFAULT_API_KEY='';
-const el={chat:G('chat'),messages:G('messages'),composer:G('composer'),input:G('input'),sendBtn:G('sendBtn'),stopBtn:G('stopBtn'),clearBtn:G('clearBtn'),newChatBtn:G('newChatBtn'),apiBadge:G('apiBadge'),statusText:G('statusText'),settingsBtnTop:G('settingsBtnTop'),settingsModal:G('settingsModal'),settingsForm:G('settingsForm'),closeSettings:G('closeSettings'),cancelSettings:G('cancelSettings'),tabModel:G('tabModel'),tabPrompt:G('tabPrompt'),panelModel:G('panelModel'),panelPrompt:G('panelPrompt'),set_model:G('set_model'),set_temperature:G('set_temperature'),set_top_p:G('set_top_p'),set_top_k:G('set_top_k'),set_frequency_penalty:G('set_frequency_penalty'),set_presence_penalty:G('set_presence_penalty'),set_repetition_penalty:G('set_repetition_penalty'),set_min_p:G('set_min_p'),set_top_a:G('set_top_a'),set_system_prompt:G('set_system_prompt')};
-function G(id){return document.getElementById(id)}
-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);
-const store={get apiKey(){return localStorage.getItem('openrouter_api_key')||DEFAULT_API_KEY||''},set apiKey(v){localStorage.setItem('openrouter_api_key',v||'');updateStatus()},get model(){return localStorage.getItem('openrouter_model')||DEFAULT_MODEL},set model(v){localStorage.setItem('openrouter_model',v||DEFAULT_MODEL)},get system_prompt(){return localStorage.getItem('openrouter_system_prompt')||''},set system_prompt(v){localStorage.setItem('openrouter_system_prompt',v||'')},get temperature(){return num(localStorage.getItem('openrouter_temperature'),1)},set temperature(v){localStorage.setItem('openrouter_temperature',''+v)},get top_p(){return num(localStorage.getItem('openrouter_top_p'),1)},set top_p(v){localStorage.setItem('openrouter_top_p',''+v)},get top_k(){return int(localStorage.getItem('openrouter_top_k'),0)},set top_k(v){localStorage.setItem('openrouter_top_k',''+v)},get frequency_penalty(){return num(localStorage.getItem('openrouter_frequency_penalty'),0)},set frequency_penalty(v){localStorage.setItem('openrouter_frequency_penalty',''+v)},get presence_penalty(){return num(localStorage.getItem('openrouter_presence_penalty'),0)},set presence_penalty(v){localStorage.setItem('openrouter_presence_penalty',''+v)},get repetition_penalty(){return num(localStorage.getItem('openrouter_repetition_penalty'),1)},set repetition_penalty(v){localStorage.setItem('openrouter_repetition_penalty',''+v)},get min_p(){return num(localStorage.getItem('openrouter_min_p'),0)},set min_p(v){localStorage.setItem('openrouter_min_p',''+v)},get top_a(){return num(localStorage.getItem('openrouter_top_a'),0)},set top_a(v){localStorage.setItem('openrouter_top_a',''+v)}};
-const state={messages:[],busy:false,controller:null};
-const getModelShort=()=>{const m=store.model||'';return m.includes('/')?m.split('/').pop():m};
-function addMessage(role,content){const row=document.createElement('div');row.className='flex gap-3';const avatar=document.createElement('div');avatar.className='cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center '+(role==='user'?'bg-gray-900 text-white':'bg-gray-200 text-gray-900');avatar.textContent=role==='user'?'🧑':'🤖';if(role!=='user')avatar.setAttribute('data-assistant-avatar','');const right=document.createElement('div');right.className='flex flex-col';if(role!=='user'){const name=document.createElement('div');name.className='text-xs font-medium text-gray-500 mb-0.5';name.textContent=getModelShort();right.appendChild(name)}const bubble=document.createElement('div');bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap '+(role==='user'?'bg-gray-50 border border-gray-200':'bg-gray-100');bubble.textContent=content;right.appendChild(bubble);row.appendChild(avatar);row.appendChild(right);el.messages.appendChild(row);state.messages.push({role,content});queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}));return bubble}
-function addAssistantBubbleStreaming(){const row=document.createElement('div');row.className='flex gap-3';const avatar=document.createElement('div');avatar.className='cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-gray-200 text-gray-900';avatar.textContent='🤖';avatar.setAttribute('data-assistant-avatar','');const right=document.createElement('div');right.className='flex flex-col';const name=document.createElement('div');name.className='text-xs font-medium text-gray-500 mb-0.5';name.textContent=getModelShort();const bubble=document.createElement('div');bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-800 whitespace-pre-wrap';bubble.textContent='';right.appendChild(name);right.appendChild(bubble);row.appendChild(avatar);row.appendChild(right);el.messages.appendChild(row);queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight}));return bubble}
-function clearChat(){state.messages=[];el.messages.innerHTML=''}
-function updateStatus(){const online=!!store.apiKey;el.apiBadge.className='justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition '+(online?'bg-black text-white border-black hover:bg-black/90':'bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200');el.statusText.textContent=online?'online':'offline'}
-function payloadWithSampling(base){return Object.assign({},base,{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})}
-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'));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='';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]')continue;try{const json=JSON.parse(data),delta=json.choices?.[0]?.delta?.content??'';if(delta){full+=delta;onDelta(delta,false)}const finish=json.choices?.[0]?.finish_reason;if(finish){onDelta('',true)}}catch{}}}}return{ok:true,text:full}}catch(e){console.error(e);const msg=String(e?.message||e);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${hint}\nSwitching to local demo.\n\n`+localDemoReply(state.messages[state.messages.length-1]?.content||'');onDelta(fallback,true);return{ok:false,text:fallback}}finally{state.controller=null}}
-function localDemoReply(prompt){const tips=['Tip: click the key badge to set your OpenRouter API key.','Click 🤖 to change model & sampling.','New chats are stateless here—no history is kept.'],tip=tips[Math.floor(Math.random()*tips.length)],mirrored=prompt.split(/\s+/).slice(0,24).join(' ');return `Local demo mode. You said: "${mirrored}"\n\n${tip}`}
-function openSettings(){el.set_model.value=store.model;el.set_temperature.value=store.temperature;el.set_top_p.value=store.top_p;el.set_top_k.value=store.top_k;el.set_frequency_penalty.value=store.frequency_penalty;el.set_presence_penalty.value=store.presence_penalty;el.set_repetition_penalty.value=store.repetition_penalty;el.set_min_p.value=store.min_p;el.set_top_a.value=store.top_a;el.set_system_prompt.value=store.system_prompt;showModelTab();el.settingsModal.classList.remove('hidden')}
-function 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')}
-function showPromptTab(){el.tabPrompt.classList.add('border-black');el.tabModel.classList.remove('border-black');el.panelPrompt.classList.remove('hidden');el.panelModel.classList.add('hidden')}
-el.closeSettings.addEventListener('click',closeSettings);el.cancelSettings.addEventListener('click',closeSettings);el.settingsModal.addEventListener('click',e=>{if(e.target===el.settingsModal||e.target.classList.contains('bg-black/30'))closeSettings()});el.tabModel.addEventListener('click',showModelTab);el.tabPrompt.addEventListener('click',showPromptTab);
-el.settingsForm.addEventListener('submit',e=>{e.preventDefault();store.model=(el.set_model.value||DEFAULT_MODEL).trim();store.temperature=clamp(num(el.set_temperature.value,1),0,2);store.top_p=clamp(num(el.set_top_p.value,1),0,1);store.top_k=Math.max(0,int(el.set_top_k.value,0));store.frequency_penalty=clamp(num(el.set_frequency_penalty.value,0),-2,2);store.presence_penalty=clamp(num(el.set_presence_penalty.value,0),-2,2);store.repetition_penalty=clamp(num(el.set_repetition_penalty.value,1),0,2);store.min_p=clamp(num(el.set_min_p.value,0),0,1);store.top_a=clamp(num(el.set_top_a.value,0),0,1);store.system_prompt=el.set_system_prompt.value.trim();closeSettings()});
-el.composer.addEventListener('submit',async e=>{e.preventDefault();if(state.busy)return;const text=el.input.value.trim();if(!text)return;el.input.value='';el.input.style.height='auto';addMessage('user',text);state.busy=true;el.sendBtn.disabled=true;el.stopBtn.classList.remove('hidden');const bubble=addAssistantBubbleStreaming();await askOpenRouterStreaming((delta,done)=>{bubble.textContent+=delta;if(done){el.sendBtn.disabled=false;el.stopBtn.classList.add('hidden');state.busy=false;state.messages.push({role:'assistant',content:bubble.textContent});queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}))}})});
-el.stopBtn.addEventListener('click',()=>{if(state.controller)state.controller.abort();el.stopBtn.classList.add('hidden');el.sendBtn.disabled=false;state.busy=false});
-el.messages.addEventListener('click',e=>{const t=e.target.closest('[data-assistant-avatar]');if(t)openSettings()});
-el.settingsBtnTop.addEventListener('click',openSettings);
-el.input.addEventListener('input',()=>{el.input.style.height='auto';el.input.style.height=Math.min(el.input.scrollHeight,160)+'px'});
-el.clearBtn.addEventListener('click',()=>clearChat());
-el.newChatBtn.addEventListener('click',()=>clearChat());
-el.apiBadge.addEventListener('click',()=>{const masked=store.apiKey?'********':'';const v=prompt('Enter OpenRouter API key (stored locally):',masked);if(v===null)return;store.apiKey=v==='********'?store.apiKey:v.trim();alert(store.apiKey?'API key saved locally.':'API key cleared.')});
-function initFromQuery(){const url=new URL(location.href),key=url.searchParams.get('key'),model=url.searchParams.get('model');if(key)store.apiKey=key;if(model)store.model=model}
-function init(){initFromQuery();updateStatus();clearChat()}init();
-</script>
-</body>
+</footer>
+
+  </div>  <!-- Sidebar -->  <div id="sidebarOverlay" class="fixed inset-0 z-40 bg-black/20 hidden"></div>
+  <aside id="sidebar" class="fixed inset-y-0 left-0 z-50 w-72 max-w-[85vw] bg-white border-r border-gray-200 shadow-xl transform -translate-x-full transition-transform duration-200 ease-out flex flex-col">
+    <div class="p-3 border-b flex items-center gap-2">
+      <button id="newAssistantBtn" class="px-3 py-2 rounded-xl bg-black text-white text-sm hover:bg-black/90">New assistant</button>
+      <span class="text-xs text-gray-500">Click name to equip</span>
+    </div>
+    <div id="assistantList" class="flex-1 overflow-y-auto divide-y"></div>
+  </aside>  <!-- Settings Dialog -->  <div id="settingsModal" class="hidden fixed inset-0 z-50">
+    <div class="absolute inset-0 bg-black/30"></div>
+    <div class="absolute inset-x-0 top-12 mx-auto w-full max-w-md px-4">
+      <div class="rounded-2xl bg-white shadow-xl border border-gray-200 overflow-hidden">
+        <div class="px-4 py-3 border-b text-sm font-semibold flex items-center justify-between">
+          <span>Assistant Settings</span>
+          <button id="closeSettings" class="p-1 rounded hover:bg-gray-100" aria-label="Close">
+            <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
+          </button>
+        </div>
+        <form id="settingsForm" class="text-sm">
+          <div class="border-b flex text-sm 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>
+          </div>
+          <div id="panelModel" class="p-4 space-y-4">
+            <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 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="openai/gpt-4o"/>
+            </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>
+              <div><label class="block text-gray-700 font-medium mb-1">Top K</label><input id="set_top_k" type="number" min="0" step="1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0"/><p class="mt-1 text-xs text-gray-500">Token shortlist size.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Frequency Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_frequency_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage repeats by count.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Presence Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_presence_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage seen tokens.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Repetition Penalty <span class="text-gray-400">(0–2)</span></label><input id="set_repetition_penalty" 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">Reduce verbatim echoes.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Min P <span class="text-gray-400">(0–1)</span></label><input id="set_min_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Minimum token prob vs best.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Top A <span class="text-gray-400">(0–1)</span></label><input id="set_top_a" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Adaptive nucleus filter.</p></div>
+            </div>
+          </div>
+          <div id="panelPrompt" class="p-4 space-y-4 hidden">
+            <div>
+              <label class="block text-gray-700 font-medium mb-1">System Prompt</label>
+              <textarea id="set_system_prompt" rows="8" class="w-full rounded-xl border border-gray-300 px-3 py-2 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="Enter a system prompt to guide the assistant"></textarea>
+              <p class="mt-1 text-xs text-gray-500">Saved per assistant.</p>
+            </div>
+          </div>
+          <div class="flex items-center justify-end gap-2 px-4 py-3 border-t">
+            <button type="button" id="cancelSettings" 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>
+    </div>
+  </div>  <script>
+    // === Constants ===
+    const DEFAULT_MODEL = 'openai/gpt-4o';
+    const DEFAULT_API_KEY = '';
+
+    // === Elements ===
+    const el = Object.fromEntries([
+      'chat','messages','composer','input','sendBtn','stopBtn','clearBtn','apiBadge','statusText','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',
+      'sidebar','sidebarOverlay','sidebarBtn','assistantList','newAssistantBtn'
+    ].map(id => [id, document.getElementById(id)]));
+
+    // === Utilities ===
+    const clamp = (v, min, max) => Math.max(min, Math.min(max, v));
+    const num = (v, d) => (v == null || v === '' || isNaN(+v)) ? d : +v;
+    const int = (v, d) => (v == null || v === '' || isNaN(parseInt(v))) ? d : parseInt(v);
+    const gid = () => Math.random().toString(36).slice(2,9);
+
+    // === Global store (API key only) ===
+    const globalStore = {
+      get apiKey(){ return localStorage.getItem('openrouter_api_key') || DEFAULT_API_KEY || '' },
+      set apiKey(v){ localStorage.setItem('openrouter_api_key', v || ''); updateStatus(); },
+    };
+
+    // === Assistants store (per-assistant settings) ===
+    const as = {
+      key: 'assistants_v1',
+      activeKey: 'active_assistant_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||'') },
+    };
+
+    let assistants = as.load();
+    if (!assistants.length){
+      const id = gid();
+      assistants = [{ id, name: 'Default', settings: { model: DEFAULT_MODEL, temperature:1, top_p:1, top_k:0, frequency_penalty:0, presence_penalty:0, repetition_penalty:1, min_p:0, top_a:0, system_prompt:'' } }];
+      as.save(assistants);
+      as.setActiveId(id);
+    }
+
+    // Derived helpers for current assistant
+    const getActive = () => assistants.find(a => a.id === as.getActiveId()) || assistants[0];
+    const setActive = (id) => { as.setActiveId(id); renderSidebar(); reflectActiveAssistant(); clearChat(); };
+
+    // === Legacy-compatible settings proxy bound to active assistant ===
+    const store = new Proxy({}, {
+      get(_, prop){
+        if (prop === 'apiKey') return globalStore.apiKey;
+        const a = getActive();
+        if (prop === 'model') return a.settings.model;
+        if (prop in a.settings) return a.settings[prop];
+        if (prop === 'system_prompt') return a.settings.system_prompt;
+        return undefined;
+      },
+      set(_, prop, val){
+        if (prop === 'apiKey'){ globalStore.apiKey = val; return true; }
+        const idx = assistants.findIndex(a => a.id === getActive().id);
+        if (idx >= 0){
+          if (prop === 'model') assistants[idx].settings.model = val || DEFAULT_MODEL;
+          else if (prop === 'system_prompt') assistants[idx].settings.system_prompt = val || '';
+          else assistants[idx].settings[prop] = val;
+          as.save(assistants);
+          return true;
+        }
+        return false;
+      }
+    });
+
+    // === Runtime state ===
+    const state = { messages: [], busy: false, controller: null };
+
+    // === UI helpers ===
+    const getModelShort = () => {
+      const m = store.model || '';
+      return m.includes('/') ? m.split('/').pop() : m;
+    };
+
+    function reflectActiveAssistant(){
+      const a = getActive();
+      el.settingsBtnTop.title = `Settings — ${a.name}`;
+    }
+
+    function renderSidebar(){
+      const activeId = as.getActiveId();
+      el.assistantList.innerHTML = assistants.map(a => `
+        <button data-asst-id="${a.id}" class="w-full text-left px-3 py-2 hover:bg-gray-50 flex items-center gap-2 ${a.id===activeId?'bg-gray-100':''}">
+          <span class="h-6 w-6 rounded-full bg-gray-200 flex items-center justify-center">🤖</span>
+          <span class="truncate">${a.name}</span>
+        </button>
+      `).join('');
+    }
+
+    function addMessage(role, content){
+      const row = document.createElement('div');
+      row.className = 'flex gap-3';
+      const avatar = document.createElement('div');
+      avatar.className = 'cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center ' + (role === 'user' ? 'bg-gray-900 text-white' : 'bg-gray-200 text-gray-900');
+      avatar.textContent = role === 'user' ? '🧑' : '🤖';
+      if (role !== 'user') avatar.setAttribute('data-assistant-avatar','');
+      const right = document.createElement('div');
+      right.className = 'flex flex-col';
+      if (role !== 'user'){
+        const name = document.createElement('div');
+        name.className = 'text-xs font-medium text-gray-500 mb-0.5';
+        name.textContent = getModelShort();
+        right.appendChild(name);
+      }
+      const bubble = document.createElement('div');
+      bubble.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap ' + (role === 'user' ? 'bg-gray-50 border border-gray-200' : 'bg-gray-100');
+      bubble.textContent = content;
+      right.appendChild(bubble);
+      row.appendChild(avatar); row.appendChild(right);
+      el.messages.appendChild(row);
+      state.messages.push({ role, content });
+      queueMicrotask(() => el.chat.scrollTo({ top: el.chat.scrollHeight, behavior: 'smooth' }));
+      return bubble;
+    }
+
+    function addAssistantBubbleStreaming(){
+      const row = document.createElement('div'); row.className = 'flex gap-3';
+      const avatar = document.createElement('div'); avatar.className = 'cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-gray-200 text-gray-900'; avatar.textContent='🤖'; avatar.setAttribute('data-assistant-avatar','');
+      const right = document.createElement('div'); right.className='flex flex-col';
+      const name = document.createElement('div'); name.className='text-xs font-medium text-gray-500 mb-0.5'; name.textContent=getModelShort();
+      const bubble = document.createElement('div'); bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-800 whitespace-pre-wrap'; bubble.textContent='';
+      right.appendChild(name); right.appendChild(bubble);
+      row.appendChild(avatar); row.appendChild(right);
+      el.messages.appendChild(row);
+      queueMicrotask(() => el.chat.scrollTo({ top: el.chat.scrollHeight }));
+      return bubble;
+    }
+
+    function clearChat(){ state.messages=[]; el.messages.innerHTML=''; }
+
+    function updateStatus(){
+      const online = !!store.apiKey;
+      el.apiBadge.className = 'justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition ' + (online ? 'bg-black text-white border-black hover:bg-black/90' : 'bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200');
+      el.statusText.textContent = online ? 'online' : 'offline';
+    }
+
+    // === Networking ===
+    function payloadWithSampling(base){
+      return Object.assign({}, base, {
+        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,
+      });
+    }
+
+    async function askOpenRouterStreaming(onDelta){
+      const apiKey = store.apiKey; const 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'));
+        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(); const decoder = new TextDecoder('utf-8'); let buffer=''; let full='';
+        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]') 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){ onDelta('',true); } }catch{} } }
+        }
+        return { ok:true, text: full };
+      }catch(e){
+        const msg = String(e?.message||e);
+        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${hint}\nSwitching to local demo.\n\n` + localDemoReply(state.messages[state.messages.length-1]?.content || '');
+        onDelta(fallback,true);
+        return { ok:false, text: fallback };
+      }finally{ state.controller = null }
+    }
+
+    function localDemoReply(prompt){
+      const tips = [ 'Tip: click the key badge to set your OpenRouter API key.', 'Click 🤖 to change model & sampling.', 'New chats are stateless here—no history is kept.' ];
+      const tip = tips[Math.floor(Math.random()*tips.length)];
+      const mirrored = prompt.split(/\s+/).slice(0,24).join(' ');
+      return `Local demo mode. You said: "${mirrored}"\n\n${tip}`;
+    }
+
+    // === Settings modal logic (per assistant) ===
+    function openSettings(){
+      const a = getActive(); const 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_system_prompt.value = s.system_prompt;
+      showModelTab();
+      el.settingsModal.classList.remove('hidden');
+    }
+    function 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'); }
+    function showPromptTab(){ el.tabPrompt.classList.add('border-black'); el.tabModel.classList.remove('border-black'); el.panelPrompt.classList.remove('hidden'); el.panelModel.classList.add('hidden'); }
+
+    // === Events ===
+    el.closeSettings.addEventListener('click', closeSettings);
+    el.cancelSettings.addEventListener('click', closeSettings);
+    el.settingsModal.addEventListener('click', e => { if (e.target === el.settingsModal || e.target.classList.contains('bg-black/30')) closeSettings(); });
+    el.tabModel.addEventListener('click', showModelTab);
+    el.tabPrompt.addEventListener('click', showPromptTab);
+
+    el.settingsForm.addEventListener('submit', (e) => {
+      e.preventDefault();
+      const a = getActive(); const 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();
+      as.save(assistants);
+      closeSettings();
+      reflectActiveAssistant();
+    });
+
+    // Composer
+    el.composer.addEventListener('submit', async (e) => {
+      e.preventDefault(); if (state.busy) return; const text = el.input.value.trim(); if (!text) return;
+      el.input.value=''; el.input.style.height='auto'; addMessage('user', text);
+      state.busy = true; el.sendBtn.disabled = true; el.stopBtn.classList.remove('hidden');
+      const assistantBubble = addAssistantBubbleStreaming();
+      await askOpenRouterStreaming((delta,done)=>{
+        assistantBubble.textContent += delta;
+        if (done){ el.sendBtn.disabled=false; el.stopBtn.classList.add('hidden'); state.busy=false; state.messages.push({ role:'assistant', content: assistantBubble.textContent }); queueMicrotask(()=> el.chat.scrollTo({ top: el.chat.scrollHeight, behavior:'smooth' })); }
+      });
+    });
+
+    // Stop streaming
+    el.stopBtn.addEventListener('click', ()=>{ if (state.controller) state.controller.abort(); el.stopBtn.classList.add('hidden'); el.sendBtn.disabled=false; state.busy=false; });
+
+    // Open settings on any assistant avatar click
+    el.messages.addEventListener('click', (e) => { const target = e.target.closest('[data-assistant-avatar]'); if (target) openSettings(); });
+
+    // Top bar assistant icon opens settings
+    el.settingsBtnTop.addEventListener('click', openSettings);
+
+    // Auto-resize textarea
+    el.input.addEventListener('input', () => { el.input.style.height='auto'; el.input.style.height = Math.min(el.input.scrollHeight,160) + 'px'; });
+
+    // Clear keeps chat blank
+    el.clearBtn.addEventListener('click', () => clearChat());
+
+    // API badge click
+    el.apiBadge.addEventListener('click', () => {
+      const currentMasked = store.apiKey ? '********' : '';
+      const input = prompt('Enter OpenRouter API key (stored locally):', currentMasked);
+      if (input === null) return;
+      store.apiKey = input === '********' ? store.apiKey : (input.trim());
+      alert(store.apiKey ? 'API key saved locally.' : 'API key cleared.');
+    });
+
+    // === Sidebar interactions ===
+    function openSidebar(){ el.sidebar.classList.remove('-translate-x-full'); el.sidebarOverlay.classList.remove('hidden'); }
+    function closeSidebar(){ el.sidebar.classList.add('-translate-x-full'); el.sidebarOverlay.classList.add('hidden'); }
+    el.sidebarBtn.addEventListener('click', openSidebar);
+    el.sidebarOverlay.addEventListener('click', closeSidebar);
+
+    el.newAssistantBtn.addEventListener('click', () => {
+      const name = prompt('Name your assistant:');
+      if (!name) return;
+      const id = gid();
+      assistants.unshift({ id, name: name.trim(), settings: { model: DEFAULT_MODEL, temperature:1, top_p:1, top_k:0, frequency_penalty:0, presence_penalty:0, repetition_penalty:1, min_p:0, top_a:0, system_prompt:'' } });
+      as.save(assistants);
+      setActive(id);
+      renderSidebar();
+      closeSidebar();
+      reflectActiveAssistant();
+    });
+
+    el.assistantList.addEventListener('click', (e) => {
+      const btn = e.target.closest('[data-asst-id]');
+      if (!btn) return;
+      const id = btn.getAttribute('data-asst-id');
+      if (id){ setActive(id); renderSidebar(); closeSidebar(); reflectActiveAssistant(); }
+    });
+
+    // === Init ===
+    function initFromQuery(){ const url = new URL(location.href); const key = url.searchParams.get('key'); const model = url.searchParams.get('model'); if (key) store.apiKey = key; if (model){ const a=getActive(); a.settings.model = model; as.save(assistants);} }
+    function init(){ initFromQuery(); updateStatus(); renderSidebar(); reflectActiveAssistant(); clearChat(); }
+    init();
+  </script></body>
 </html>
diff --git a/index.html b/index.html
index 33ad428..72d1d1e 100644
--- a/index.html
+++ b/index.html
@@ -2,94 +2,414 @@
 
 <html lang="en">
 <head>
-<meta charset="utf-8"/>
-<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"/>
-<title>ChatGPT — Mobile Clone (Light)</title>
-<script src="https://cdn.tailwindcss.com"></script>
-<style>:root{--safe-bottom:env(safe-area-inset-bottom)}::-webkit-scrollbar{height:8px;width:8px}::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:999px}.no-scrollbar::-webkit-scrollbar{display:none}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}</style>
+  <meta charset="utf-8"/>
+  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"/>
+  <title>ChatGPT — Mobile Clone (Light)</title>
+  <script src="https://cdn.tailwindcss.com"></script>
+  <style>
+    :root{--safe-bottom:env(safe-area-inset-bottom)}
+    ::-webkit-scrollbar{height:8px;width:8px}
+    ::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:999px}
+    .no-scrollbar::-webkit-scrollbar{display:none}
+    .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
+  </style>
 </head>
 <body class="bg-white text-gray-900 selection:bg-black/10">
-<div class="flex flex-col h-dvh max-h-dvh">
-  <header class="sticky top-0 z-10 bg-white/80 backdrop-blur border-b border-gray-200">
-    <div class="mx-auto w-full max-w-2xl px-4 py-3 grid grid-cols-3 items-center">
-      <button id="newChatBtn" title="New chat" class="h-8 w-8 rounded-xl bg-gray-100 hover:bg-gray-200 active:scale-[.99] transition flex items-center justify-center"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M12 6v12M6 12h12"/></svg></button>
-      <button id="settingsBtnTop" title="Assistant settings" class="justify-self-center h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center hover:bg-gray-300 active:scale-[.99] transition">🤖</button>
-      <button id="apiBadge" title="Set OpenRouter API key" class="justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200"><svg viewBox="0 0 24 24" class="h-4 w-4" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M15 7a4 4 0 11-7.999.001A4 4 0 0115 7zm-.293 6.707L9 19.414V22h2.586l5.707-5.707a1 1 0 000-1.414l-1.586-1.586a1 1 0 00-1.414 0z"/></svg><span id="statusText" class="sr-only">offline</span></button>
-    </div>
-  </header>
-  <main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
-    <div id="messages" class="mx-auto w-full max-w-2xl px-4 py-4 sm:py-6 space-y-4"></div>
-    <div class="h-24"></div>
-  </main>
-  <footer class="sticky bottom-0 bg-gradient-to-t from-white via-white/95 to-white/40 pt-3 pb-[calc(12px+var(--safe-bottom))] border-t border-gray-200">
-    <div class="mx-auto w-full max-w-2xl px-4">
-      <form id="composer" class="group relative flex items-end gap-2">
-        <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true" class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-black/20 focus:border-gray-300 max-h-40"></textarea>
-        <button id="sendBtn" type="submit" aria-label="Send" class="shrink-0 rounded-2xl bg-black text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-black/90 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/></svg></button>
-      </form>
-      <div class="mt-2 flex items-center justify-end text-xs text-gray-500"><div class="flex items-center gap-3"><button id="stopBtn" class="underline decoration-dotted hover:text-gray-700 hidden">Stop</button><button id="clearBtn" class="underline decoration-dotted hover:text-gray-700">Clear</button></div></div>
-    </div>
-  </footer>
-</div>
-<div id="settingsModal" class="hidden fixed inset-0 z-50">
-  <div class="absolute inset-0 bg-black/30"></div>
-  <div class="absolute inset-x-0 top-12 mx-auto w-full max-w-md px-4">
-    <div class="rounded-2xl bg-white shadow-xl border border-gray-200 overflow-hidden">
-      <div class="px-4 py-3 border-b text-sm font-semibold flex items-center justify-between"><span>Assistant Settings</span><button id="closeSettings" class="p-1 rounded hover:bg-gray-100" aria-label="Close"><svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg></button></div>
-      <form id="settingsForm" class="text-sm">
-        <div class="border-b flex text-sm 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></div>
-        <div id="panelModel" class="p-4 space-y-4">
-          <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 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="openai/gpt-4o"/></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>
-            <div><label class="block text-gray-700 font-medium mb-1">Top K</label><input id="set_top_k" type="number" min="0" step="1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0"/><p class="mt-1 text-xs text-gray-500">Token shortlist size.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Frequency Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_frequency_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage repeats by count.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Presence Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_presence_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage seen tokens.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Repetition Penalty <span class="text-gray-400">(0–2)</span></label><input id="set_repetition_penalty" 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">Reduce verbatim echoes.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Min P <span class="text-gray-400">(0–1)</span></label><input id="set_min_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Minimum token prob vs best.</p></div>
-            <div><label class="block text-gray-700 font-medium mb-1">Top A <span class="text-gray-400">(0–1)</span></label><input id="set_top_a" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Adaptive nucleus filter.</p></div>
-          </div>
-        </div>
-        <div id="panelPrompt" class="p-4 space-y-4 hidden">
-          <div><label class="block text-gray-700 font-medium mb-1">System Prompt</label><textarea id="set_system_prompt" rows="8" class="w-full rounded-xl border border-gray-300 px-3 py-2 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="Enter a system prompt to guide the assistant"></textarea><p class="mt-1 text-xs text-gray-500">Saved locally; sent as a system message with each request.</p></div>
-        </div>
-        <div class="flex items-center justify-end gap-2 px-4 py-3 border-t"><button type="button" id="cancelSettings" 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 class="flex flex-col h-dvh max-h-dvh">
+    <!-- Header -->
+    <header class="sticky top-0 z-20 bg-white/80 backdrop-blur border-b border-gray-200">
+      <div class="mx-auto w-full max-w-2xl px-4 py-3 grid grid-cols-3 items-center">
+        <!-- Sidebar toggle (left) -->
+        <button id="sidebarBtn" class="h-8 w-8 rounded-xl bg-gray-100 hover:bg-gray-200 active:scale-[.99] transition flex items-center justify-center" title="Assistants">
+          <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M4 6h16M4 12h16M4 18h16"/></svg>
+        </button>
+        <!-- Active assistant (center) -->
+        <button id="settingsBtnTop" class="justify-self-center h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center hover:bg-gray-300 active:scale-[.99] transition" title="Assistant settings">🤖</button>
+        <!-- API key badge (right) -->
+        <button id="apiBadge" title="Set OpenRouter API key" class="justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200">
+          <svg viewBox="0 0 24 24" class="h-4 w-4" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M15 7a4 4 0 11-7.999.001A4 4 0 0115 7zm-.293 6.707L9 19.414V22h2.586l5.707-5.707a1 1 0 000-1.414l-1.586-1.586a1 1 0 00-1.414 0z"/></svg>
+          <span id="statusText" class="sr-only">offline</span>
+        </button>
+      </div>
+    </header><!-- Messages -->
+<main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
+  <div id="messages" class="mx-auto w-full max-w-2xl px-4 py-4 sm:py-6 space-y-4"></div>
+  <div class="h-24"></div>
+</main>
+
+<!-- Input Dock -->
+<footer class="sticky bottom-0 z-10 bg-gradient-to-t from-white via-white/95 to-white/40 pt-3 pb-[calc(12px+var(--safe-bottom))] border-t border-gray-200">
+  <div class="mx-auto w-full max-w-2xl px-4">
+    <form id="composer" class="group relative flex items-end gap-2">
+      <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true" class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-black/20 focus:border-gray-300 max-h-40"></textarea>
+      <button id="sendBtn" type="submit" aria-label="Send" class="shrink-0 rounded-2xl bg-black text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-black/90 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed">
+        <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/></svg>
+      </button>
+    </form>
+    <div class="mt-2 flex items-center justify-end text-xs text-gray-500">
+      <div class="flex items-center gap-3">
+        <button id="stopBtn" class="underline decoration-dotted hover:text-gray-700 hidden">Stop</button>
+        <button id="clearBtn" class="underline decoration-dotted hover:text-gray-700">Clear</button>
+      </div>
     </div>
   </div>
-</div>
-<script>
-const DEFAULT_MODEL='openai/gpt-4o',DEFAULT_API_KEY='';
-const el={chat:G('chat'),messages:G('messages'),composer:G('composer'),input:G('input'),sendBtn:G('sendBtn'),stopBtn:G('stopBtn'),clearBtn:G('clearBtn'),newChatBtn:G('newChatBtn'),apiBadge:G('apiBadge'),statusText:G('statusText'),settingsBtnTop:G('settingsBtnTop'),settingsModal:G('settingsModal'),settingsForm:G('settingsForm'),closeSettings:G('closeSettings'),cancelSettings:G('cancelSettings'),tabModel:G('tabModel'),tabPrompt:G('tabPrompt'),panelModel:G('panelModel'),panelPrompt:G('panelPrompt'),set_model:G('set_model'),set_temperature:G('set_temperature'),set_top_p:G('set_top_p'),set_top_k:G('set_top_k'),set_frequency_penalty:G('set_frequency_penalty'),set_presence_penalty:G('set_presence_penalty'),set_repetition_penalty:G('set_repetition_penalty'),set_min_p:G('set_min_p'),set_top_a:G('set_top_a'),set_system_prompt:G('set_system_prompt')};
-function G(id){return document.getElementById(id)}
-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);
-const store={get apiKey(){return localStorage.getItem('openrouter_api_key')||DEFAULT_API_KEY||''},set apiKey(v){localStorage.setItem('openrouter_api_key',v||'');updateStatus()},get model(){return localStorage.getItem('openrouter_model')||DEFAULT_MODEL},set model(v){localStorage.setItem('openrouter_model',v||DEFAULT_MODEL)},get system_prompt(){return localStorage.getItem('openrouter_system_prompt')||''},set system_prompt(v){localStorage.setItem('openrouter_system_prompt',v||'')},get temperature(){return num(localStorage.getItem('openrouter_temperature'),1)},set temperature(v){localStorage.setItem('openrouter_temperature',''+v)},get top_p(){return num(localStorage.getItem('openrouter_top_p'),1)},set top_p(v){localStorage.setItem('openrouter_top_p',''+v)},get top_k(){return int(localStorage.getItem('openrouter_top_k'),0)},set top_k(v){localStorage.setItem('openrouter_top_k',''+v)},get frequency_penalty(){return num(localStorage.getItem('openrouter_frequency_penalty'),0)},set frequency_penalty(v){localStorage.setItem('openrouter_frequency_penalty',''+v)},get presence_penalty(){return num(localStorage.getItem('openrouter_presence_penalty'),0)},set presence_penalty(v){localStorage.setItem('openrouter_presence_penalty',''+v)},get repetition_penalty(){return num(localStorage.getItem('openrouter_repetition_penalty'),1)},set repetition_penalty(v){localStorage.setItem('openrouter_repetition_penalty',''+v)},get min_p(){return num(localStorage.getItem('openrouter_min_p'),0)},set min_p(v){localStorage.setItem('openrouter_min_p',''+v)},get top_a(){return num(localStorage.getItem('openrouter_top_a'),0)},set top_a(v){localStorage.setItem('openrouter_top_a',''+v)}};
-const state={messages:[],busy:false,controller:null};
-const getModelShort=()=>{const m=store.model||'';return m.includes('/')?m.split('/').pop():m};
-function addMessage(role,content){const row=document.createElement('div');row.className='flex gap-3';const avatar=document.createElement('div');avatar.className='cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center '+(role==='user'?'bg-gray-900 text-white':'bg-gray-200 text-gray-900');avatar.textContent=role==='user'?'🧑':'🤖';if(role!=='user')avatar.setAttribute('data-assistant-avatar','');const right=document.createElement('div');right.className='flex flex-col';if(role!=='user'){const name=document.createElement('div');name.className='text-xs font-medium text-gray-500 mb-0.5';name.textContent=getModelShort();right.appendChild(name)}const bubble=document.createElement('div');bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap '+(role==='user'?'bg-gray-50 border border-gray-200':'bg-gray-100');bubble.textContent=content;right.appendChild(bubble);row.appendChild(avatar);row.appendChild(right);el.messages.appendChild(row);state.messages.push({role,content});queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}));return bubble}
-function addAssistantBubbleStreaming(){const row=document.createElement('div');row.className='flex gap-3';const avatar=document.createElement('div');avatar.className='cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-gray-200 text-gray-900';avatar.textContent='🤖';avatar.setAttribute('data-assistant-avatar','');const right=document.createElement('div');right.className='flex flex-col';const name=document.createElement('div');name.className='text-xs font-medium text-gray-500 mb-0.5';name.textContent=getModelShort();const bubble=document.createElement('div');bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-800 whitespace-pre-wrap';bubble.textContent='';right.appendChild(name);right.appendChild(bubble);row.appendChild(avatar);row.appendChild(right);el.messages.appendChild(row);queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight}));return bubble}
-function clearChat(){state.messages=[];el.messages.innerHTML=''}
-function updateStatus(){const online=!!store.apiKey;el.apiBadge.className='justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition '+(online?'bg-black text-white border-black hover:bg-black/90':'bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200');el.statusText.textContent=online?'online':'offline'}
-function payloadWithSampling(base){return Object.assign({},base,{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})}
-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'));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='';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]')continue;try{const json=JSON.parse(data),delta=json.choices?.[0]?.delta?.content??'';if(delta){full+=delta;onDelta(delta,false)}const finish=json.choices?.[0]?.finish_reason;if(finish){onDelta('',true)}}catch{}}}}return{ok:true,text:full}}catch(e){console.error(e);const msg=String(e?.message||e);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${hint}\nSwitching to local demo.\n\n`+localDemoReply(state.messages[state.messages.length-1]?.content||'');onDelta(fallback,true);return{ok:false,text:fallback}}finally{state.controller=null}}
-function localDemoReply(prompt){const tips=['Tip: click the key badge to set your OpenRouter API key.','Click 🤖 to change model & sampling.','New chats are stateless here—no history is kept.'],tip=tips[Math.floor(Math.random()*tips.length)],mirrored=prompt.split(/\s+/).slice(0,24).join(' ');return `Local demo mode. You said: "${mirrored}"\n\n${tip}`}
-function openSettings(){el.set_model.value=store.model;el.set_temperature.value=store.temperature;el.set_top_p.value=store.top_p;el.set_top_k.value=store.top_k;el.set_frequency_penalty.value=store.frequency_penalty;el.set_presence_penalty.value=store.presence_penalty;el.set_repetition_penalty.value=store.repetition_penalty;el.set_min_p.value=store.min_p;el.set_top_a.value=store.top_a;el.set_system_prompt.value=store.system_prompt;showModelTab();el.settingsModal.classList.remove('hidden')}
-function 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')}
-function showPromptTab(){el.tabPrompt.classList.add('border-black');el.tabModel.classList.remove('border-black');el.panelPrompt.classList.remove('hidden');el.panelModel.classList.add('hidden')}
-el.closeSettings.addEventListener('click',closeSettings);el.cancelSettings.addEventListener('click',closeSettings);el.settingsModal.addEventListener('click',e=>{if(e.target===el.settingsModal||e.target.classList.contains('bg-black/30'))closeSettings()});el.tabModel.addEventListener('click',showModelTab);el.tabPrompt.addEventListener('click',showPromptTab);
-el.settingsForm.addEventListener('submit',e=>{e.preventDefault();store.model=(el.set_model.value||DEFAULT_MODEL).trim();store.temperature=clamp(num(el.set_temperature.value,1),0,2);store.top_p=clamp(num(el.set_top_p.value,1),0,1);store.top_k=Math.max(0,int(el.set_top_k.value,0));store.frequency_penalty=clamp(num(el.set_frequency_penalty.value,0),-2,2);store.presence_penalty=clamp(num(el.set_presence_penalty.value,0),-2,2);store.repetition_penalty=clamp(num(el.set_repetition_penalty.value,1),0,2);store.min_p=clamp(num(el.set_min_p.value,0),0,1);store.top_a=clamp(num(el.set_top_a.value,0),0,1);store.system_prompt=el.set_system_prompt.value.trim();closeSettings()});
-el.composer.addEventListener('submit',async e=>{e.preventDefault();if(state.busy)return;const text=el.input.value.trim();if(!text)return;el.input.value='';el.input.style.height='auto';addMessage('user',text);state.busy=true;el.sendBtn.disabled=true;el.stopBtn.classList.remove('hidden');const bubble=addAssistantBubbleStreaming();await askOpenRouterStreaming((delta,done)=>{bubble.textContent+=delta;if(done){el.sendBtn.disabled=false;el.stopBtn.classList.add('hidden');state.busy=false;state.messages.push({role:'assistant',content:bubble.textContent});queueMicrotask(()=>el.chat.scrollTo({top:el.chat.scrollHeight,behavior:'smooth'}))}})});
-el.stopBtn.addEventListener('click',()=>{if(state.controller)state.controller.abort();el.stopBtn.classList.add('hidden');el.sendBtn.disabled=false;state.busy=false});
-el.messages.addEventListener('click',e=>{const t=e.target.closest('[data-assistant-avatar]');if(t)openSettings()});
-el.settingsBtnTop.addEventListener('click',openSettings);
-el.input.addEventListener('input',()=>{el.input.style.height='auto';el.input.style.height=Math.min(el.input.scrollHeight,160)+'px'});
-el.clearBtn.addEventListener('click',()=>clearChat());
-el.newChatBtn.addEventListener('click',()=>clearChat());
-el.apiBadge.addEventListener('click',()=>{const masked=store.apiKey?'********':'';const v=prompt('Enter OpenRouter API key (stored locally):',masked);if(v===null)return;store.apiKey=v==='********'?store.apiKey:v.trim();alert(store.apiKey?'API key saved locally.':'API key cleared.')});
-function initFromQuery(){const url=new URL(location.href),key=url.searchParams.get('key'),model=url.searchParams.get('model');if(key)store.apiKey=key;if(model)store.model=model}
-function init(){initFromQuery();updateStatus();clearChat()}init();
-</script>
-</body>
+</footer>
+
+  </div>  <!-- Sidebar -->  <div id="sidebarOverlay" class="fixed inset-0 z-40 bg-black/20 hidden"></div>
+  <aside id="sidebar" class="fixed inset-y-0 left-0 z-50 w-72 max-w-[85vw] bg-white border-r border-gray-200 shadow-xl transform -translate-x-full transition-transform duration-200 ease-out flex flex-col">
+    <div class="p-3 border-b flex items-center gap-2">
+      <button id="newAssistantBtn" class="px-3 py-2 rounded-xl bg-black text-white text-sm hover:bg-black/90">New assistant</button>
+      <span class="text-xs text-gray-500">Click name to equip</span>
+    </div>
+    <div id="assistantList" class="flex-1 overflow-y-auto divide-y"></div>
+  </aside>  <!-- Settings Dialog -->  <div id="settingsModal" class="hidden fixed inset-0 z-50">
+    <div class="absolute inset-0 bg-black/30"></div>
+    <div class="absolute inset-x-0 top-12 mx-auto w-full max-w-md px-4">
+      <div class="rounded-2xl bg-white shadow-xl border border-gray-200 overflow-hidden">
+        <div class="px-4 py-3 border-b text-sm font-semibold flex items-center justify-between">
+          <span>Assistant Settings</span>
+          <button id="closeSettings" class="p-1 rounded hover:bg-gray-100" aria-label="Close">
+            <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
+          </button>
+        </div>
+        <form id="settingsForm" class="text-sm">
+          <div class="border-b flex text-sm 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>
+          </div>
+          <div id="panelModel" class="p-4 space-y-4">
+            <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 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="openai/gpt-4o"/>
+            </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>
+              <div><label class="block text-gray-700 font-medium mb-1">Top K</label><input id="set_top_k" type="number" min="0" step="1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0"/><p class="mt-1 text-xs text-gray-500">Token shortlist size.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Frequency Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_frequency_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage repeats by count.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Presence Penalty <span class="text-gray-400">(-2–2)</span></label><input id="set_presence_penalty" type="number" min="-2" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Discourage seen tokens.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Repetition Penalty <span class="text-gray-400">(0–2)</span></label><input id="set_repetition_penalty" 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">Reduce verbatim echoes.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Min P <span class="text-gray-400">(0–1)</span></label><input id="set_min_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Minimum token prob vs best.</p></div>
+              <div><label class="block text-gray-700 font-medium mb-1">Top A <span class="text-gray-400">(0–1)</span></label><input id="set_top_a" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="0.0"/><p class="mt-1 text-xs text-gray-500">Adaptive nucleus filter.</p></div>
+            </div>
+          </div>
+          <div id="panelPrompt" class="p-4 space-y-4 hidden">
+            <div>
+              <label class="block text-gray-700 font-medium mb-1">System Prompt</label>
+              <textarea id="set_system_prompt" rows="8" class="w-full rounded-xl border border-gray-300 px-3 py-2 focus:outline-none focus:ring-2 focus:ring-black/20" placeholder="Enter a system prompt to guide the assistant"></textarea>
+              <p class="mt-1 text-xs text-gray-500">Saved per assistant.</p>
+            </div>
+          </div>
+          <div class="flex items-center justify-end gap-2 px-4 py-3 border-t">
+            <button type="button" id="cancelSettings" 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>
+    </div>
+  </div>  <script>
+    // === Constants ===
+    const DEFAULT_MODEL = 'openai/gpt-4o';
+    const DEFAULT_API_KEY = '';
+
+    // === Elements ===
+    const el = Object.fromEntries([
+      'chat','messages','composer','input','sendBtn','stopBtn','clearBtn','apiBadge','statusText','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',
+      'sidebar','sidebarOverlay','sidebarBtn','assistantList','newAssistantBtn'
+    ].map(id => [id, document.getElementById(id)]));
+
+    // === Utilities ===
+    const clamp = (v, min, max) => Math.max(min, Math.min(max, v));
+    const num = (v, d) => (v == null || v === '' || isNaN(+v)) ? d : +v;
+    const int = (v, d) => (v == null || v === '' || isNaN(parseInt(v))) ? d : parseInt(v);
+    const gid = () => Math.random().toString(36).slice(2,9);
+
+    // === Global store (API key only) ===
+    const globalStore = {
+      get apiKey(){ return localStorage.getItem('openrouter_api_key') || DEFAULT_API_KEY || '' },
+      set apiKey(v){ localStorage.setItem('openrouter_api_key', v || ''); updateStatus(); },
+    };
+
+    // === Assistants store (per-assistant settings) ===
+    const as = {
+      key: 'assistants_v1',
+      activeKey: 'active_assistant_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||'') },
+    };
+
+    let assistants = as.load();
+    if (!assistants.length){
+      const id = gid();
+      assistants = [{ id, name: 'Default', settings: { model: DEFAULT_MODEL, temperature:1, top_p:1, top_k:0, frequency_penalty:0, presence_penalty:0, repetition_penalty:1, min_p:0, top_a:0, system_prompt:'' } }];
+      as.save(assistants);
+      as.setActiveId(id);
+    }
+
+    // Derived helpers for current assistant
+    const getActive = () => assistants.find(a => a.id === as.getActiveId()) || assistants[0];
+    const setActive = (id) => { as.setActiveId(id); renderSidebar(); reflectActiveAssistant(); clearChat(); };
+
+    // === Legacy-compatible settings proxy bound to active assistant ===
+    const store = new Proxy({}, {
+      get(_, prop){
+        if (prop === 'apiKey') return globalStore.apiKey;
+        const a = getActive();
+        if (prop === 'model') return a.settings.model;
+        if (prop in a.settings) return a.settings[prop];
+        if (prop === 'system_prompt') return a.settings.system_prompt;
+        return undefined;
+      },
+      set(_, prop, val){
+        if (prop === 'apiKey'){ globalStore.apiKey = val; return true; }
+        const idx = assistants.findIndex(a => a.id === getActive().id);
+        if (idx >= 0){
+          if (prop === 'model') assistants[idx].settings.model = val || DEFAULT_MODEL;
+          else if (prop === 'system_prompt') assistants[idx].settings.system_prompt = val || '';
+          else assistants[idx].settings[prop] = val;
+          as.save(assistants);
+          return true;
+        }
+        return false;
+      }
+    });
+
+    // === Runtime state ===
+    const state = { messages: [], busy: false, controller: null };
+
+    // === UI helpers ===
+    const getModelShort = () => {
+      const m = store.model || '';
+      return m.includes('/') ? m.split('/').pop() : m;
+    };
+
+    function reflectActiveAssistant(){
+      const a = getActive();
+      el.settingsBtnTop.title = `Settings — ${a.name}`;
+    }
+
+    function renderSidebar(){
+      const activeId = as.getActiveId();
+      el.assistantList.innerHTML = assistants.map(a => `
+        <button data-asst-id="${a.id}" class="w-full text-left px-3 py-2 hover:bg-gray-50 flex items-center gap-2 ${a.id===activeId?'bg-gray-100':''}">
+          <span class="h-6 w-6 rounded-full bg-gray-200 flex items-center justify-center">🤖</span>
+          <span class="truncate">${a.name}</span>
+        </button>
+      `).join('');
+    }
+
+    function addMessage(role, content){
+      const row = document.createElement('div');
+      row.className = 'flex gap-3';
+      const avatar = document.createElement('div');
+      avatar.className = 'cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center ' + (role === 'user' ? 'bg-gray-900 text-white' : 'bg-gray-200 text-gray-900');
+      avatar.textContent = role === 'user' ? '🧑' : '🤖';
+      if (role !== 'user') avatar.setAttribute('data-assistant-avatar','');
+      const right = document.createElement('div');
+      right.className = 'flex flex-col';
+      if (role !== 'user'){
+        const name = document.createElement('div');
+        name.className = 'text-xs font-medium text-gray-500 mb-0.5';
+        name.textContent = getModelShort();
+        right.appendChild(name);
+      }
+      const bubble = document.createElement('div');
+      bubble.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap ' + (role === 'user' ? 'bg-gray-50 border border-gray-200' : 'bg-gray-100');
+      bubble.textContent = content;
+      right.appendChild(bubble);
+      row.appendChild(avatar); row.appendChild(right);
+      el.messages.appendChild(row);
+      state.messages.push({ role, content });
+      queueMicrotask(() => el.chat.scrollTo({ top: el.chat.scrollHeight, behavior: 'smooth' }));
+      return bubble;
+    }
+
+    function addAssistantBubbleStreaming(){
+      const row = document.createElement('div'); row.className = 'flex gap-3';
+      const avatar = document.createElement('div'); avatar.className = 'cursor-pointer shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-gray-200 text-gray-900'; avatar.textContent='🤖'; avatar.setAttribute('data-assistant-avatar','');
+      const right = document.createElement('div'); right.className='flex flex-col';
+      const name = document.createElement('div'); name.className='text-xs font-medium text-gray-500 mb-0.5'; name.textContent=getModelShort();
+      const bubble = document.createElement('div'); bubble.className='rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-800 whitespace-pre-wrap'; bubble.textContent='';
+      right.appendChild(name); right.appendChild(bubble);
+      row.appendChild(avatar); row.appendChild(right);
+      el.messages.appendChild(row);
+      queueMicrotask(() => el.chat.scrollTo({ top: el.chat.scrollHeight }));
+      return bubble;
+    }
+
+    function clearChat(){ state.messages=[]; el.messages.innerHTML=''; }
+
+    function updateStatus(){
+      const online = !!store.apiKey;
+      el.apiBadge.className = 'justify-self-end h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition ' + (online ? 'bg-black text-white border-black hover:bg-black/90' : 'bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200');
+      el.statusText.textContent = online ? 'online' : 'offline';
+    }
+
+    // === Networking ===
+    function payloadWithSampling(base){
+      return Object.assign({}, base, {
+        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,
+      });
+    }
+
+    async function askOpenRouterStreaming(onDelta){
+      const apiKey = store.apiKey; const 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'));
+        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(); const decoder = new TextDecoder('utf-8'); let buffer=''; let full='';
+        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]') 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){ onDelta('',true); } }catch{} } }
+        }
+        return { ok:true, text: full };
+      }catch(e){
+        const msg = String(e?.message||e);
+        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${hint}\nSwitching to local demo.\n\n` + localDemoReply(state.messages[state.messages.length-1]?.content || '');
+        onDelta(fallback,true);
+        return { ok:false, text: fallback };
+      }finally{ state.controller = null }
+    }
+
+    function localDemoReply(prompt){
+      const tips = [ 'Tip: click the key badge to set your OpenRouter API key.', 'Click 🤖 to change model & sampling.', 'New chats are stateless here—no history is kept.' ];
+      const tip = tips[Math.floor(Math.random()*tips.length)];
+      const mirrored = prompt.split(/\s+/).slice(0,24).join(' ');
+      return `Local demo mode. You said: "${mirrored}"\n\n${tip}`;
+    }
+
+    // === Settings modal logic (per assistant) ===
+    function openSettings(){
+      const a = getActive(); const 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_system_prompt.value = s.system_prompt;
+      showModelTab();
+      el.settingsModal.classList.remove('hidden');
+    }
+    function 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'); }
+    function showPromptTab(){ el.tabPrompt.classList.add('border-black'); el.tabModel.classList.remove('border-black'); el.panelPrompt.classList.remove('hidden'); el.panelModel.classList.add('hidden'); }
+
+    // === Events ===
+    el.closeSettings.addEventListener('click', closeSettings);
+    el.cancelSettings.addEventListener('click', closeSettings);
+    el.settingsModal.addEventListener('click', e => { if (e.target === el.settingsModal || e.target.classList.contains('bg-black/30')) closeSettings(); });
+    el.tabModel.addEventListener('click', showModelTab);
+    el.tabPrompt.addEventListener('click', showPromptTab);
+
+    el.settingsForm.addEventListener('submit', (e) => {
+      e.preventDefault();
+      const a = getActive(); const 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();
+      as.save(assistants);
+      closeSettings();
+      reflectActiveAssistant();
+    });
+
+    // Composer
+    el.composer.addEventListener('submit', async (e) => {
+      e.preventDefault(); if (state.busy) return; const text = el.input.value.trim(); if (!text) return;
+      el.input.value=''; el.input.style.height='auto'; addMessage('user', text);
+      state.busy = true; el.sendBtn.disabled = true; el.stopBtn.classList.remove('hidden');
+      const assistantBubble = addAssistantBubbleStreaming();
+      await askOpenRouterStreaming((delta,done)=>{
+        assistantBubble.textContent += delta;
+        if (done){ el.sendBtn.disabled=false; el.stopBtn.classList.add('hidden'); state.busy=false; state.messages.push({ role:'assistant', content: assistantBubble.textContent }); queueMicrotask(()=> el.chat.scrollTo({ top: el.chat.scrollHeight, behavior:'smooth' })); }
+      });
+    });
+
+    // Stop streaming
+    el.stopBtn.addEventListener('click', ()=>{ if (state.controller) state.controller.abort(); el.stopBtn.classList.add('hidden'); el.sendBtn.disabled=false; state.busy=false; });
+
+    // Open settings on any assistant avatar click
+    el.messages.addEventListener('click', (e) => { const target = e.target.closest('[data-assistant-avatar]'); if (target) openSettings(); });
+
+    // Top bar assistant icon opens settings
+    el.settingsBtnTop.addEventListener('click', openSettings);
+
+    // Auto-resize textarea
+    el.input.addEventListener('input', () => { el.input.style.height='auto'; el.input.style.height = Math.min(el.input.scrollHeight,160) + 'px'; });
+
+    // Clear keeps chat blank
+    el.clearBtn.addEventListener('click', () => clearChat());
+
+    // API badge click
+    el.apiBadge.addEventListener('click', () => {
+      const currentMasked = store.apiKey ? '********' : '';
+      const input = prompt('Enter OpenRouter API key (stored locally):', currentMasked);
+      if (input === null) return;
+      store.apiKey = input === '********' ? store.apiKey : (input.trim());
+      alert(store.apiKey ? 'API key saved locally.' : 'API key cleared.');
+    });
+
+    // === Sidebar interactions ===
+    function openSidebar(){ el.sidebar.classList.remove('-translate-x-full'); el.sidebarOverlay.classList.remove('hidden'); }
+    function closeSidebar(){ el.sidebar.classList.add('-translate-x-full'); el.sidebarOverlay.classList.add('hidden'); }
+    el.sidebarBtn.addEventListener('click', openSidebar);
+    el.sidebarOverlay.addEventListener('click', closeSidebar);
+
+    el.newAssistantBtn.addEventListener('click', () => {
+      const name = prompt('Name your assistant:');
+      if (!name) return;
+      const id = gid();
+      assistants.unshift({ id, name: name.trim(), settings: { model: DEFAULT_MODEL, temperature:1, top_p:1, top_k:0, frequency_penalty:0, presence_penalty:0, repetition_penalty:1, min_p:0, top_a:0, system_prompt:'' } });
+      as.save(assistants);
+      setActive(id);
+      renderSidebar();
+      closeSidebar();
+      reflectActiveAssistant();
+    });
+
+    el.assistantList.addEventListener('click', (e) => {
+      const btn = e.target.closest('[data-asst-id]');
+      if (!btn) return;
+      const id = btn.getAttribute('data-asst-id');
+      if (id){ setActive(id); renderSidebar(); closeSidebar(); reflectActiveAssistant(); }
+    });
+
+    // === Init ===
+    function initFromQuery(){ const url = new URL(location.href); const key = url.searchParams.get('key'); const model = url.searchParams.get('model'); if (key) store.apiKey = key; if (model){ const a=getActive(); a.settings.model = model; as.save(assistants);} }
+    function init(){ initFromQuery(); updateStatus(); renderSidebar(); reflectActiveAssistant(); clearChat(); }
+    init();
+  </script></body>
 </html>
