diff --git a/CONTEXT.md b/CONTEXT.md
index 2dc00ac..a1e3ccf 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -153,6 +153,14 @@ The browser may display the calculation, but production payment creation must
 recalculate and validate all price, quantity, freight, and discount values on
 the server. Client-provided totals are never authoritative.
 
+Normal JPG/PNG uploads are individual artwork by default, including when uploaded
+from the by-metre panel. They use the existing loose-artwork editor, printed
+width, quantity, and live packing canvas; packed height determines metres.
+Customers uploading an already assembled film-width image must explicitly select
+the ready-sheet option before uploading. PDF and manual-format ready sheets keep
+their existing workflow. These models retain their separate approved price tiers;
+image dimensions alone must never classify a normal artwork as a finished sheet.
+
 ## Freight
 
 The original visual freight flow in `dtf-site.html` was a stub with only pickup
diff --git a/dtf-site.html b/dtf-site.html
index 1da5b1f..0d3c0d5 100644
--- a/dtf-site.html
+++ b/dtf-site.html
@@ -261,8 +261,7 @@ h1 em{font-style:normal;color:var(--laranja)}
 .trocarModo{margin:-4px 0 11px;padding:10px 12px;border-radius:9px;background:#F1FBF5;
  border:1px solid #BFE6CE;font-size:11.5px;color:#1F5C3A;line-height:1.5}
 .trocarModo b{font-family:"Inter",sans-serif;font-weight:700}
-.trocarModo button{margin:7px 0 0;border:0;border-radius:6px;padding:7px 10px;background:var(--verde-ml);
- color:#fff;font-family:"Inter",sans-serif;font-size:11.5px;font-weight:700;cursor:pointer}
+.trocarModo label{display:block;margin-top:7px;cursor:pointer}
 .zona{border:2px dashed var(--laranja);border-radius:13px;padding:44px 20px;text-align:center;
  cursor:pointer;margin-bottom:14px;background:#FFF6E8;transition:var(--transition)}
 .zona:hover,.zona.sobre{border-color:var(--laranja2);background:#FFEFD6;
@@ -1002,8 +1001,11 @@ footer a:hover{color:var(--laranja2)}
           <div class="fila">
             <div class="trocouCam" id="trocouCam" style="display:none"></div>
             <div class="trocarModo" id="trocarParaAvulsa" hidden>
-              <b>É uma imagem ou arte solta?</b> Nós montamos, repetimos e encaixamos na folha.
-              <button type="button" id="mudarParaAvulsa">Montar minha arte</button>
+              <b>PNG e JPG entram como artes avulsas.</b> Informe largura e quantidade;
+              montamos a folha, com o preço de artes avulsas.
+              <label><input type="checkbox" id="imagemComoFolha">
+                Minha imagem já é uma folha montada de <span id="larguraFolhaPronta">57</span> cm
+                · usar o preço de arquivo por metro</label>
             </div>
             <div class="caminhos" id="caminhos">
               <button class="cam on" data-cam="auto">
@@ -1462,6 +1464,17 @@ document.querySelectorAll('[data-modo-cta]').forEach(b=>b.addEventListener('clic
 function abrir(m){
   modo=m; artes=[]; folhas=[]; metros=0; nota=0; reencaixado=false;
   montagemCm=0;
+  $('imagemComoFolha').checked=false;
+  $('imagemComoFolha').disabled=false;
+  pintaModo();
+  $('lista').innerHTML=''; $('rA').style.display='none'; recusa([]);
+  recemChegada=null; caminho='auto'; avisoCam(''); pintaCaminhos();
+  $('vMt').textContent='—'; previaAoVivo(); agendaAvaliacao();
+  limpaPaineis();   // o carrinho só some se o pedido estiver vazio
+  $('foco').scrollIntoView({behavior:'smooth',block:'start'});
+}
+function pintaModo(){
+  const m=modo;
   const c=MODOS[m];
   $('cards').style.display='none'; $('foco').classList.add('on');
   $('fTit').textContent=c.tit; $('fLg').textContent=c.lg;
@@ -1472,21 +1485,10 @@ function abrir(m){
                                : '.png,.jpg,.jpeg,.webp';
   $('catFoco').className='cat '+(ehFolha(m)?'file':'av');
   $('trocarParaAvulsa').hidden=!ehFolha(m);
+  $('larguraFolhaPronta').textContent=String(c.larg).replace('.',',');
   $('foco2').classList.remove('sofila');            // a caixa de requisitos vale nos 4 modos
   $('montcabTit').textContent = ehFolha(m) ? 'Sua folha' : 'Montagem ao vivo';
-  $('lista').innerHTML=''; $('rA').style.display='none'; recusa([]);
-  recemChegada=null; caminho='auto'; avisoCam(''); pintaCaminhos();
-  $('vMt').textContent='—'; previaAoVivo(); agendaAvaliacao();
-  limpaPaineis();   // o carrinho só some se o pedido estiver vazio
-  $('foco').scrollIntoView({behavior:'smooth',block:'start'});
 }
-$('mudarParaAvulsa').addEventListener('click',()=>{
-  // A ready sheet and a loose artwork have different pricing units. Preserve the
-  // selected browser files, but ask for the artwork width in the packing flow.
-  const arquivos=folhas.map(x=>x.f);
-  abrir('avulsa');
-  if(arquivos.length) sel(arquivos);
-});
 $('bVoltar').addEventListener('click',()=>{
   itemAtual=null; $('atual').style.display='none'; $('carrLin').innerHTML=''; pintaPedido();
   $('foco').classList.remove('on'); $('cards').style.display='';
@@ -1523,6 +1525,18 @@ Z.addEventListener('keydown',e=>{if(e.key==='Enter'||e.key===' '){I.click();e.pr
 I.addEventListener('change',()=>sel([...I.files]));
 function sel(fs){
   if(!fs.length) return;
+  // Pixels cannot tell a loose artwork from a finished sheet. Images default
+  // to the artwork model unless the customer explicitly declares a ready sheet.
+  // Update this same editor in place; do not reopen it or discard uploaded files.
+  if(ehFolha() && !$('imagemComoFolha').checked && fs.some(f=>ACEITA.avulsa.test(f.name))){
+    if(fs.some(f=>!ACEITA.avulsa.test(f.name))){
+      $('recusa').style.display='block';
+      $('recusa').textContent='Envie artes avulsas e folhas prontas separadamente. Para uma imagem já montada, marque a opção de folha pronta.';
+      return;
+    }
+    modo=modo==='uvfile'?'uv':'avulsa';
+    pintaModo(); pintaCaminhos();
+  }
   const regra = ehFolha() ? ACEITA.folha : ACEITA.avulsa;
   const fora = fs.filter(f=>!regra.test(f.name));
   fs = fs.filter(f=>regra.test(f.name));
@@ -1545,6 +1559,7 @@ function sel(fs){
       pintaCaminhos();
     }
     const novas=fs.map(f=>({f, med:null, rep:1, m:0, semAnalise:null}));
+    $('imagemComoFolha').checked=true;
     folhas=folhas.concat(novas);            // soma, não substitui
     pintaFolha();
     novas.forEach(x=>{
@@ -1867,6 +1882,8 @@ function medirFolha(file){
 
 function pintaFolha(){
   const L=larguraFilme();
+  $('imagemComoFolha').disabled=folhas.length>0;
+  if(!folhas.length) $('imagemComoFolha').checked=false;
   if(!folhas.length){ $('lista').innerHTML=''; agendaAvaliacao(); previaAoVivo(); return; }
 
   $('lista').innerHTML = folhas.map((x,i)=>{
@@ -2019,10 +2036,9 @@ function pintaArtes(){
     let barra='', dica='', calc='<span>informe a largura para ver a qualidade</span>';
     if(a.cm>0){
       const dpi=Math.round(a.px/(a.cm/2.54)), n=Math.max(6,Math.min(100,Math.round(dpi/300*100)));
-      const alt=a.prop? a.cm*a.prop : null;
       barra='<div class="qb2"><i class="'+cls(n)+'" style="width:'+n+'%"></i></div>';
       calc='<span class="'+cls(n)+'"><b>'+n+'%</b> · '+dpi+' DPI</span><span>'+
-        (a.q>1? a.q+' × ':'')+(a.cm*a.q/100).toFixed(2).replace('.',',')+' m no total</span>';
+        a.q+' × '+n1(a.cm)+' × '+n1(a.cm*propDe(a))+' cm</span>';
       const sug=sugestao(a);
       dica = sug
         ? '<div class="dica"><b>Reduzindo para '+n1(sug.alvo)+' cm você economiza '+
@@ -2051,7 +2067,13 @@ function pintaArtes(){
   }).join('');
   $('lista').querySelectorAll('[data-rm]').forEach(b=>b.addEventListener('click',()=>{artes.splice(+b.dataset.rm,1);pintaArtes();}));
   $('lista').querySelectorAll('[data-cm]').forEach(i=>i.addEventListener('change',()=>{artes[+i.dataset.cm].cm=+i.value||0;pintaArtes();}));
-  $('lista').querySelectorAll('[data-q]').forEach(i=>i.addEventListener('change',()=>{artes[+i.dataset.q].q=+i.value||1;pintaArtes();}));
+  $('lista').querySelectorAll('[data-q]').forEach(i=>i.addEventListener('change',()=>{artes[+i.dataset.q].q=Math.max(1,Math.floor(+i.value||1));pintaArtes();}));
+  $('lista').querySelectorAll('[data-cm], [data-q]').forEach(i=>i.addEventListener('input',()=>{
+    const largura=i.hasAttribute('data-cm');
+    const a=artes[+(largura?i.dataset.cm:i.dataset.q)];
+    a[largura?'cm':'q']=largura?Math.max(0,+i.value||0):Math.max(1,Math.floor(+i.value||1));
+    previaAoVivo();
+  }));
   $('lista').querySelectorAll('[data-usar]').forEach(b=>b.addEventListener('click',()=>{
     artes[+b.dataset.usar].cm=+b.dataset.cm; pintaArtes();
   }));
@@ -2348,7 +2370,7 @@ function dilatar(bruto,cw,ch,cheias){
   }
   return {cw:cw2,ch:ch2,bits:out,cheias};       // cheias = área de arte, sem a folga
 }
-function mascara(img,w,h,rot){
+function mascara(img,w,h,rot,esp=false){
   const cw=Math.max(1,Math.ceil(w/CEL)), ch=Math.max(1,Math.ceil(h/CEL));
   const cv=document.createElement('canvas');
   cv.width=cw; cv.height=ch;
@@ -2359,8 +2381,11 @@ function mascara(img,w,h,rot){
     return dilatar(bruto,cw,ch,cheias);
   }
   ctx.save();
-  if(rot===90){ ctx.translate(cw,0); ctx.rotate(Math.PI/2); ctx.drawImage(img,0,0,ch,cw); }
-  else ctx.drawImage(img,0,0,cw,ch);
+  ctx.translate(cw/2,ch/2);
+  ctx.rotate(rot*Math.PI/180);
+  if(esp) ctx.scale(-1,1);
+  const dw=rot%180===90?ch:cw, dh=rot%180===90?cw:ch;
+  ctx.drawImage(img,-dw/2,-dh/2,dw,dh);
   ctx.restore();
   const d=ctx.getImageData(0,0,cw,ch).data;
   bruto=new Uint8Array(cw*ch); cheias=0;
@@ -2406,7 +2431,8 @@ function encaixar(pecas,W){
     oris.forEach(o=>{
       if(o.w>W) return;
       // a máscara segue a medida da orientação escolhida · girada, largura e altura trocam
-      const m = (p.mPronta && o.rot===0) ? p.mPronta : mascara(p.img, o.w, o.h, o.rot);
+      const m = (p.mPronta && o.rot===0) ? p.mPronta : mascara(p.img, o.w, o.h,
+        o.rot+(p.a?.giro||0), p.a?.esp);
       const xs=new Set([0]), ys=new Set([0]);
       postas.forEach(q=>{ xs.add(q.cx+q.m.cw); xs.add(q.cx); ys.add(q.cy+q.m.ch); ys.add(q.cy); });
       const passoX=Math.max(1,Math.round(cols/34));
@@ -2436,7 +2462,7 @@ function encaixar(pecas,W){
     if(!melhor){
       const k=Math.min(1, W/p.w);                // cabe na largura, nem que seja reduzindo
       const w=p.w*k, h=p.h*k;
-      const m=mascara(p.img,w,h,0);
+      const m=mascara(p.img,w,h,p.a?.giro||0,p.a?.esp);
       melhor={cx:0,cy:linhas,m,x:0,y:linhas*CEL,w,h,rot:0,ref:p};
     }
     // a folga só existe entre peças, não é folha cobrada
@@ -2449,8 +2475,9 @@ function encaixar(pecas,W){
 }
 
 function desenhaMontagem(area,lista,mts,W,fora,aoTerminar){
-  const PX_CM=W/larguraFilme();
-  const itens=[]; lista.forEach(a=>{ for(let k=0;k<(a.q||1);k++) itens.push(a); });
+  const versao=area.montagemVersao=(area.montagemVersao||0)+1;
+  const filme=larguraFilme(), PX_CM=W/filme;
+  const itens=lista.map(a=>({...a}));
   if(fora) fora.innerHTML='';
   if(!itens.length){
     area.innerHTML='<div class="semmont"><b>A montagem aparece aqui</b>'+
@@ -2459,13 +2486,15 @@ function desenhaMontagem(area,lista,mts,W,fora,aoTerminar){
     return;
   }
 
-  Promise.all(itens.map(a=>carregarImagem(a.f).then(img=>({a,img})))).then(cargas=>{
+  Promise.all(itens.map(a=>carregarImagem(a.f).then(img=>({a,img})))).then(imagens=>{
+    if(area.montagemVersao!==versao) return;
+    const cargas=imagens.flatMap(c=>Array.from({length:c.a.q||1},()=>({...c})));
     cargas.forEach(c=>{
       c.w = c.a.cm;                                    // o motor trabalha em centímetros
       c.h = c.w * (c.img ? (c.a.giro? c.img.width/c.img.height : c.img.height/c.img.width) : 1);
       c.travado = !!c.a.giro;                    // giro do cliente manda no encaixe
     });
-    const enc=encaixar(cargas,larguraFilme());
+    const enc=encaixar(cargas,filme);
     const alturaCm=enc.altura;
     const pos=enc.pos.map(p=>({...p, x:p.x*PX_CM, y:p.y*PX_CM, w:p.w*PX_CM, h:p.h*PX_CM}));
     const altura=alturaCm*PX_CM;
@@ -2483,7 +2512,7 @@ function desenhaMontagem(area,lista,mts,W,fora,aoTerminar){
       ctx.save();
       const giro = (p.rot===90?90:0) + (c.a && c.a.giro? 90:0);
       ctx.translate(p.x+p.w/2, p.y+p.h/2);
-      if(giro%180===90) ctx.rotate(Math.PI/2);
+      ctx.rotate(giro*Math.PI/180);
       if(c.a && c.a.esp) ctx.scale(-1,1);
       const dw = giro%180===90 ? p.h : p.w, dh = giro%180===90 ? p.w : p.h;
       if(c.img) ctx.drawImage(c.img,-dw/2,-dh/2,dw,dh);
@@ -2494,7 +2523,7 @@ function desenhaMontagem(area,lista,mts,W,fora,aoTerminar){
         ctx.fillText(c.a.f.name.split('.').pop().toUpperCase(),p.x+p.w/2,p.y+p.h/2+4);
       }
     });
-    molduraFolha(ctx,W,usado,larguraFilme(),alturaCm/100);
+    molduraFolha(ctx,W,usado,filme,alturaCm/100);
     marcaDagua(ctx,W,cv.height);
     area.innerHTML=''; area.appendChild(cv);
 
@@ -2503,7 +2532,7 @@ function desenhaMontagem(area,lista,mts,W,fora,aoTerminar){
     const areaArteCm=enc.pos.reduce((s,p)=>
       s + (p.m && p.m.cheias!=null ? p.m.cheias*CEL*CEL : p.w*p.h), 0);
     const uso=Math.max(1,Math.min(100,
-      Math.round(areaArteCm/(larguraFilme()*Math.max(alturaCm,0.1))*100)));
+      Math.round(areaArteCm/(filme*Math.max(alturaCm,0.1))*100)));
     const el=document.createElement('div');
     el.className = uso>=70? 'usoBom' : 'usoRuim';
     el.innerHTML = (uso>=70
@@ -2522,6 +2551,8 @@ function previaArtes(){ desenhaMontagem($('pArea'), artes, metros, 560); }
 // montagem ao vivo, ao lado da fila · redesenha 140 ms depois da ultima mexida
 let tMont=null;
 function previaAoVivo(){
+  clearTimeout(tMont);
+  $('vArea').montagemVersao=($('vArea').montagemVersao||0)+1;
   if(ehFolha()){
     $('vUso').innerHTML='';
     const tot=folhaTotalM();
@@ -2551,7 +2582,6 @@ function previaAoVivo(){
     }
     return;
   }
-  clearTimeout(tMont);
   tMont=setTimeout(()=>{
     const prontas=artes.filter(a=>a.cm>0);
     const W=Math.round(300*ZOOMS[zoomI]);
diff --git a/local/artwork_browser_test.mjs b/local/artwork_browser_test.mjs
new file mode 100644
index 0000000..f23af6d
--- /dev/null
+++ b/local/artwork_browser_test.mjs
@@ -0,0 +1,187 @@
+// Isolated upload/editor regression: no API, database, storage, or Docker services.
+// Run: node local/artwork_browser_test.mjs
+// Optional: ARTWORK_FILE=/absolute/path/to/image.jpg to also inspect a real image.
+import assert from 'node:assert/strict';
+import {spawn} from 'node:child_process';
+import {createServer} from 'node:http';
+import {createHash} from 'node:crypto';
+import {mkdtemp, readFile, writeFile, mkdir} from 'node:fs/promises';
+import {tmpdir} from 'node:os';
+import {resolve} from 'node:path';
+
+const html=await readFile('dtf-site.html','utf8');
+const hashes=[...html.matchAll(/<script\b([^>]*)>([\s\S]*?)<\/script>/gi)]
+  .filter(m=>! /\bsrc\s*=/i.test(m[1]))
+  .map(m=>"'sha256-"+createHash('sha256').update(m[2]).digest('base64')+"'");
+const server=createServer(async(req,res)=>{
+  if(req.url.startsWith('/api/')){
+    res.setHeader('Content-Type','application/json');
+    res.end(JSON.stringify(req.url==='/api/session'?{cart_scope:'isolated-artwork-test'}:{customer:null}));
+    return;
+  }
+  if(req.url==='/'){
+    res.setHeader('Content-Type','text/html');
+    res.setHeader('Content-Security-Policy',`default-src 'self'; script-src 'self' ${hashes.join(' ')}; script-src-attr 'none'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; connect-src 'self'; object-src 'none'`);
+    res.end(html);return;
+  }
+  if(['/privacy.js','/upload.js','/checkout.js','/cart.js'].includes(req.url)){
+    res.setHeader('Content-Type','text/javascript');
+    res.end(await readFile('local/static'+req.url));return;
+  }
+  res.writeHead(404);res.end();
+});
+await new Promise(r=>server.listen(0,'127.0.0.1',r));
+const profile=await mkdtemp(tmpdir()+'/dtf-artwork-');
+const chrome=spawn(process.env.CHROME_BIN||'/usr/bin/google-chrome-stable',[
+  '--headless=new','--disable-gpu','--no-first-run','--no-default-browser-check',
+  '--remote-debugging-port=0','--user-data-dir='+profile,'about:blank'
+],{stdio:['ignore','ignore','pipe']});
+let stderr='',ws,next=0;
+chrome.stderr.on('data',b=>stderr+=b);
+const pending=new Map(),errors=[];
+const pause=ms=>new Promise(r=>setTimeout(r,ms));
+async function waitFor(fn,label){
+  const end=Date.now()+15000;
+  while(Date.now()<end){if(await fn())return;await pause(50);}
+  throw new Error('Timeout: '+label);
+}
+function call(method,params={}){
+  return new Promise((resolve,reject)=>{const id=++next;pending.set(id,{resolve,reject});ws.send(JSON.stringify({id,method,params}));});
+}
+async function evaluate(expression){
+  const r=await call('Runtime.evaluate',{expression,awaitPromise:true,returnByValue:true});
+  if(r.exceptionDetails)throw new Error(JSON.stringify(r.exceptionDetails));
+  return r.result.value;
+}
+const click=selector=>evaluate(`document.querySelector(${JSON.stringify(selector)}).click()`);
+async function fill(selector,value){
+  await evaluate(`(()=>{const el=document.querySelector(${JSON.stringify(selector)});el.value=${JSON.stringify(String(value))};el.dispatchEvent(new Event('input',{bubbles:true}));})()`);
+}
+async function packed(count){
+  await waitFor(()=>evaluate(`window.lastLayout?.pos.length===${count} && !!document.querySelector('#vArea canvas') && Math.abs(metros-window.lastLayout.altura/100)<0.0001`),'packed canvas and matching metres');
+  return evaluate(`({height:lastLayout.altura, pos:lastLayout.pos, metres:metros, billed:cobrar(metros), mode:modo, heading:$('montcabTit').textContent})`);
+}
+async function screenshot(name){
+  // Finish editing as a customer does when leaving the field, refreshing the
+  // item's quality/details as well as the already-live canvas.
+  await evaluate(`$('lista').querySelector('[data-cm]')?.dispatchEvent(new Event('change',{bubbles:true}))`);
+  await waitFor(()=>evaluate(`!!$('vArea').querySelector('canvas') && Math.abs(metros-montagemCm/100)<0.0001`),'screenshot layout');
+  await evaluate(`$('foco').scrollIntoView({behavior:'instant',block:'start'})`);
+  const r=await call('Page.captureScreenshot',{format:'png'});
+  await mkdir('output/local',{recursive:true});
+  await writeFile('output/local/'+name+'.png',Buffer.from(r.data,'base64'));
+}
+try{
+  let port;
+  await waitFor(async()=>{try{port=Number((await readFile(profile+'/DevToolsActivePort','utf8')).split('\n')[0]);return true;}catch{return false;}},'Chrome startup');
+  const tab=await(await fetch(`http://127.0.0.1:${port}/json/new?about:blank`,{method:'PUT'})).json();
+  ws=new WebSocket(tab.webSocketDebuggerUrl);
+  await new Promise((r,j)=>{ws.onopen=r;ws.onerror=j;});
+  ws.onmessage=event=>{
+    const m=JSON.parse(event.data);
+    if(m.id){const p=pending.get(m.id);pending.delete(m.id);m.error?p.reject(m.error):p.resolve(m.result);}
+    else if(m.method==='Runtime.exceptionThrown')errors.push(m.params.exceptionDetails);
+  };
+  await call('Runtime.enable');await call('Page.enable');
+  await call('Emulation.setDeviceMetricsOverride',{width:1440,height:1100,deviceScaleFactor:1,mobile:false});
+  await call('Page.navigate',{url:`http://127.0.0.1:${server.address().port}/`});
+  await waitFor(()=>evaluate(`typeof sel==='function' && typeof AUTO!=='undefined'`),'Site scripts');
+  // Observe the actual engine, without replacing its placement or rendering.
+  await evaluate(`(()=>{
+    const original=encaixar;
+    encaixar=(pieces,width)=>{const result=original(pieces,width);
+      if(pieces.some(p=>p.a))window.lastLayout={altura:result.altura,pos:result.pos.map(p=>({x:p.x,y:p.y,w:p.w,h:p.h,rot:p.rot}))};
+      return result;};
+    window.sendImage=async(type='image/jpeg',drop=false)=>{
+      const c=document.createElement('canvas');c.width=200;c.height=400;
+      const ctx=c.getContext('2d');ctx.fillStyle='white';ctx.fillRect(0,0,200,400);
+      ctx.fillStyle='#222';ctx.fillRect(85,20,20,360);ctx.fillRect(25,100,140,20);
+      ctx.fillStyle='#e65c00';ctx.fillRect(130,280,45,80);
+      const blob=await new Promise(r=>c.toBlob(r,type));
+      const file=new File([blob],type==='image/jpeg'?'artwork.jpg':'artwork.png',{type});
+      const dt=new DataTransfer();dt.items.add(file);
+      if(drop)$('zona').dispatchEvent(new DragEvent('drop',{dataTransfer:dt,bubbles:true,cancelable:true}));
+      else{$('inp').files=dt.files;$('inp').dispatchEvent(new Event('change',{bubbles:true}));}
+    };
+  })()`);
+  // Reproduce the reported entry path, with no navigation workaround.
+  await click('[data-modo="file"]');
+  await evaluate('sendImage()');
+  await waitFor(()=>evaluate(`artes.length===1 && !!artes[0].src`),'JPG artwork model');
+  assert.deepEqual(await evaluate(`({mode:modo,sheets:folhas.length,width:artes[0].cm,quantity:artes[0].q})`),{mode:'avulsa',sheets:0,width:0,quantity:1});
+  await fill('[data-cm]',20);await fill('[data-q]',6);
+  let layout=await packed(6);
+  assert.equal(layout.heading,'Montagem ao vivo');assert.equal(layout.height,121);
+  assert.equal(layout.billed,1.3);
+  assert.deepEqual(layout.pos.map(p=>[p.x,p.y]),[[0,0],[20.5,0],[0,40.5],[20.5,40.5],[0,81],[20.5,81]]);
+  assert.ok(layout.pos.every(p=>p.h/p.w===2 && p.x+p.w<=57));
+  await screenshot('artwork-packed');
+  await fill('[data-cm]',15);
+  await waitFor(()=>evaluate('lastLayout?.altura===60.5 && metros===0.605'),'width updates without blur');
+  await fill('[data-q]',9);layout=await packed(9);assert.equal(layout.height,91);
+  await click('[data-giro]');
+  await waitFor(()=>evaluate('lastLayout?.altura===23.5 && metros===0.235'),'rotation updates packing');
+  const beforeMirror=await evaluate(`$('vArea').querySelector('canvas').toDataURL()`);
+  await click('[data-esp]');
+  await waitFor(()=>evaluate(`$('vArea').querySelector('canvas').toDataURL()!==${JSON.stringify(beforeMirror)}`),'mirror updates pixels');
+  assert.equal(await evaluate('metros'),0.235);
+  // A transparent asymmetric image exposes masks that ignore user transforms.
+  // Its top-left quarter becomes bottom-right after a mirror and 90° turn.
+  assert.equal(await evaluate(`(()=>{
+    const image=document.createElement('canvas');image.width=100;image.height=200;
+    image.getContext('2d').fillRect(0,0,50,100);
+    const result=encaixar([{w:20,h:10,img:image,a:{giro:90,esp:true},travado:true}],57);
+    const m=result.pos[0].m;
+    return !m.bits[2*m.cw+2] && !m.bits[2*m.cw+30] && !!m.bits[15*m.cw+30];
+  })()`),true);
+  // Explicit finished-sheet images retain their separate dimensions and price.
+  await click('#bVoltar');await click('[data-modo="file"]');
+  await click('#imagemComoFolha');await evaluate('sendImage()');
+  await waitFor(()=>evaluate('folhas.length===1 && !!folhas[0].previewSrc && metros===1.14'),'ready-sheet image');
+  assert.deepEqual(await evaluate(`({mode:modo,art:artes.length,title:$('montcabTit').textContent,rate:precoBase(100)})`),{mode:'file',art:0,title:'Sua folha',rate:14.9});
+  assert.equal(await evaluate(`document.querySelectorAll('[data-cm]').length`),0);
+  await evaluate(`(()=>{const el=$('lista').querySelector('[data-repf]');el.value=2;el.dispatchEvent(new Event('change',{bubbles:true}));})()`);
+  await waitFor(()=>evaluate('metros===2.28'),'ready-sheet repetitions');
+  assert.equal(await evaluate(`document.querySelectorAll('.folhaPrevia').length`),1);
+  // Keep manual ready-sheet uploads intact and refuse ambiguous mixed batches.
+  await click('#bVoltar');await click('[data-modo="file"]');
+  await evaluate(`sel([new File(['sheet'],'sheet.cdr'),new File(['image'],'art.png')])`);
+  assert.deepEqual(await evaluate('[folhas.length,artes.length]'),[0,0]);
+  await evaluate(`sel([new File(['sheet'],'sheet.cdr')])`);
+  await waitFor(()=>evaluate(`!!$('lista').querySelector('[data-comp]')`),'manual ready sheet');
+  await evaluate(`(()=>{const el=$('lista').querySelector('[data-comp]');el.value=1.01;el.dispatchEvent(new Event('change',{bubbles:true}));})()`);
+  await waitFor(()=>evaluate('itemAtual?.total===21.89'),'unchanged manual pricing');
+  // PNG drag/drop follows exactly the same artwork path; UV stays UV.
+  for(const [mode,expected] of [['file','avulsa'],['avulsa','avulsa'],['uvfile','uv']]){
+    await click('#bVoltar');await click('[data-modo="'+mode+'"]');
+    await evaluate(`sendImage('image/png',true)`);
+    await waitFor(()=>evaluate('artes.length===1 && !!artes[0].src'),'PNG drop');
+    assert.equal(await evaluate('modo'),expected);
+    await fill('[data-cm]',10);await fill('[data-q]',4);await packed(4);
+  }
+  // An older image load must not overwrite a newer edit, even before debounce.
+  await evaluate(`(()=>{window.realLoad=carregarImagem;window.delayed=[];
+    carregarImagem=f=>new Promise(resolve=>delayed.push(()=>realLoad(f).then(resolve)));
+  })()`);
+  await fill('[data-q]',5);
+  await waitFor(()=>evaluate('delayed.length===1'),'delayed preview');
+  await fill('[data-q]',7);
+  await evaluate(`carregarImagem=realLoad;delayed[0]()`);
+  await packed(7);
+  // Inspect the supplied local artwork, when requested, using the real file input.
+  if(process.env.ARTWORK_FILE){
+    await click('#bVoltar');await click('[data-modo="file"]');
+    const doc=await call('DOM.getDocument');
+    const input=await call('DOM.querySelector',{nodeId:doc.root.nodeId,selector:'#inp'});
+    await call('DOM.setFileInputFiles',{nodeId:input.nodeId,files:[resolve(process.env.ARTWORK_FILE)]});
+    await waitFor(()=>evaluate('artes.length===1 && !!artes[0].src'),'supplied artwork');
+    await fill('[data-cm]',20);await fill('[data-q]',6);layout=await packed(6);
+    assert.ok(new Set(layout.pos.map(p=>p.x)).size>1);
+    assert.ok(new Set(layout.pos.map(p=>p.y)).size>1);
+    await screenshot('artwork-supplied');
+    console.log('Supplied image:',JSON.stringify(layout));
+  }
+  assert.deepEqual(errors,[]);
+  console.log('PASS: JPG/PNG upload and drop, packed copies, 5 mm gaps, aspect ratio, live width/quantity/rotation/mirror, metres, ready-sheet pricing/repeats, UV, stale renders, strict inline CSP.');
+}catch(error){console.error(error);if(stderr)console.error(stderr.slice(-1200));process.exitCode=1;}
+finally{ws?.close();chrome.kill();server.closeAllConnections();await new Promise(r=>server.close(r));}