Fix model dropdown loading, cache models for 24h, and style build tag.

frontend/index.html

@@ -15,6 +15,7 @@
   header { padding:24px 28px; border-bottom:1px solid var(--line); }
   h1 { margin:0; font-size:20px; letter-spacing:.2px; }
   .sub { color:var(--muted); font-size:13px; margin-top:4px; }
+  #buildTag { display:inline-block; font-size:11px; background:rgba(91,140,255,.15); color:var(--accent); padding:2px 8px; border-radius:12px; margin-left:8px; vertical-align:middle; text-transform:none; letter-spacing:.3px; }
   main { max-width:920px; margin:0 auto; padding:28px; }
   .drop { border:1.5px dashed var(--line); border-radius:12px; padding:36px; text-align:center;
           background:var(--panel); transition:border-color .15s; cursor:pointer; }
@@ -193,12 +194,38 @@ function fillSelect(sel, items, preferred){
 }
 
 let modelsLoaded=false;
+const MODELS_CACHE_KEY='cc_models_v1';
+const MODELS_CACHE_TTL=24*60*60*1000;
+function loadModelsCache(){
+  try{
+    const raw=localStorage.getItem(MODELS_CACHE_KEY);
+    if(!raw) return null;
+    const parsed=JSON.parse(raw);
+    if(!parsed.ts || Date.now()-parsed.ts > MODELS_CACHE_TTL) return null;
+    return parsed.data||null;
+  }catch(e){ return null; }
+}
+function saveModelsCache(data){
+  try{ localStorage.setItem(MODELS_CACHE_KEY, JSON.stringify({ts:Date.now(), data})); }
+  catch(e){}
+}
+
 async function loadModels(){
   const note=document.getElementById('modelNote');
+  const cached=loadModelsCache();
+  if(cached){
+    const defs=cached.defaults||{};
+    fillSelect(visionSel, cached.vision, defs.vision);
+    fillSelect(textSel, cached.text, defs.text);
+    modelsLoaded=true;
+    note.textContent='('+(cached.text||[]).length+' text / '+(cached.vision||[]).length+' vision cached)';
+    return;
+  }
   try{
     const res=await fetch('/models');
     if(!res.ok) throw new Error('models HTTP '+res.status);
     const data=await res.json();
+    saveModelsCache(data);
     const defs=data.defaults||{};
     fillSelect(visionSel, data.vision, defs.vision);
     fillSelect(textSel, data.text, defs.text);
@@ -648,6 +675,7 @@ async function finalizeReview(){
   fetch('/health').then(r=>r.ok?r.json():null).then(h=>{
     if(h&&h.build) document.getElementById('buildTag').textContent=' · build '+h.build;
   }).catch(()=>{});
+  loadModels();
   const jobId=new URLSearchParams(location.search).get('job');
   if(jobId){ statusEl.innerHTML='<span class="spinner"></span>Loading job '+esc(jobId)+'...'; poll(jobId); }
 })();