SpeedCalc, kept playing after save. Now stops. Fixed.

frontend/src/melodies/SpeedCalculatorModal.jsx

@@ -167,8 +167,12 @@ export default function SpeedCalculatorModal({ open, melody, builtMelody, archet
   // Reset on open — auto-load archetype CSV if available
   useEffect(() => {
     if (open) {
-      setCapturedMax(info.maxSpeed > 0 ? info.maxSpeed : null);
-      setCapturedNormal(null);
+      const max = info.maxSpeed > 0 ? info.maxSpeed : null;
+      const min = info.minSpeed > 0 ? info.minSpeed : null;
+      // Reverse-calculate Normal from MIN and MAX: normal = sqrt(min * max)
+      const normal = (max !== null && min !== null) ? Math.round(Math.sqrt(min * max)) : null;
+      setCapturedMax(max);
+      setCapturedNormal(normal);
       setBinaryLoadError("");
       setCurrentStep(-1);
       setPlaying(false);
@@ -315,11 +319,12 @@ export default function SpeedCalculatorModal({ open, melody, builtMelody, archet
 
   const handleSave = async () => {
     if (!capturedMax || !capturedNormal || !derivedMin) return;
+    stopPlayback();
     setSaving(true);
     setSaveError("");
     setSaveSuccess(false);
     try {
-      await api.put(`/melodies/${melody.id}`, {
+      const body = {
         information: {
           ...info,
           minSpeed: derivedMin,
@@ -327,10 +332,11 @@ export default function SpeedCalculatorModal({ open, melody, builtMelody, archet
         },
         default_settings: melody.default_settings,
         type: melody.type,
-        url: melody.url,
         uid: melody.uid,
         pid: melody.pid,
-      });
+      };
+      if (melody.url) body.url = melody.url;
+      await api.put(`/melodies/${melody.id}`, body);
       setSaveSuccess(true);
       setTimeout(() => onSaved(), 800);
     } catch (err) {