files: keep only hf download copy button

ep1/viewer.html

@@ -94,7 +94,7 @@ canvas{width:100%;display:block;cursor:pointer}
 </div>
 <div class="panel manifest" style="margin:14px 22px 26px;padding:12px 18px">
   <div class="readout-title">episode files<a class="dl" href="https://huggingface.co/datasets/faradayfuture/teleopSample/tree/main" target="_blank" rel="noopener">⬇ browse / download this episode on HuggingFace</a></div>
-  <div class="dl-row"><a class="dl-btn" href="https://huggingface.co/datasets/faradayfuture/teleopSample/tree/main" target="_blank" rel="noopener">⬇ Download full sample on HuggingFace</a><button class="dl-cmd" onclick="navigator.clipboard.writeText('hf download faradayfuture/teleopSample --repo-type dataset --local-dir teleopSample');var b=this,o=b.textContent;b.textContent='\u2713 copied \u2014 run in terminal';setTimeout(function(){b.textContent=o},2500)">\u29c9 copy: hf download (all files)</button></div>
+  <div class="dl-row"><button class="dl-cmd" onclick="navigator.clipboard.writeText('hf download faradayfuture/teleopSample --repo-type dataset --local-dir teleopSample');var b=this,o=b.textContent;b.textContent='✓ copied — run in terminal';setTimeout(function(){b.textContent=o},2500)">📋 copy: hf download (all files)</button></div>
   <div class="files" id="fileManifest"></div>
 </div>