add arrow back

app/src/content/embeds/d3-pipeline.html

@@ -101,6 +101,7 @@
       { from: 'transform',  to: 'write' },
       { from: 'transform',  to: 'rollout' },
       { from: 'rollout',    to: 'vllm' },
+      { from: 'vllm',       to: 'transform', label: 'response' },
       { from: 'write',      to: 'hf_out' },
       { from: 'write',      to: 'card' },
       { from: 'write',      to: 'monitor' },
@@ -256,6 +257,11 @@
       if (e.from === 'transform' && e.to === 'write')    return vBez(pt(f,'bottom'), pt(t,'top'));
       if (e.from === 'transform' && e.to === 'rollout')  return hBez(pt(f,'left'),   pt(t,'right'));
       if (e.from === 'rollout' && e.to === 'vllm')       return vBez(pt(f,'bottom'), pt(t,'top'));
+      if (e.from === 'vllm' && e.to === 'transform') {
+        const a = pt(f, 'right');
+        const b = pt(t, 'left', Math.round(t._h * 0.2));
+        return hBez(a, b);
+      }
 
       // Fan out from Write: top/center/bottom of right edge
       const sp = Math.round(f._h * 0.28);