Bound the automation hold to the window the model has not caught up on, and make that authority model stated, enforced and tested

src/shell/instrument/editor_controls.cpp

@@ -36,7 +36,6 @@ using instrument::ui::kDeckKnobSize;
 using instrument::ui::kPad;
 using instrument::ui::deckParamNorm;
 using instrument::ui::kEnvTimeMaxSeconds;
-using instrument::ui::kKeyTrackMax;
 using instrument::ui::resetDeckParam;
 using instrument::ui::sampleDeckGroups;
 using instrument::ui::setDeckParam;
@@ -119,7 +118,7 @@ double ReaSamplerEditor::deckControlNorm(int id) const {
     if (id == kBakeHoldKnobId) return bakeHoldNorm();
     switch (static_cast<ParamControl>(id)) {
         case ParamControl::kKeyTrack:
-            return clamp01(params_.keyTrack / kKeyTrackMax);
+            return instrument::ui::keyTrackNormFrom(params_.keyTrack);
         case ParamControl::kVoiceCount:
             return clamp01(static_cast<double>(voiceCount_ - kMinVoiceCount) /
                            static_cast<double>(kMaxVoiceCount - kMinVoiceCount));
@@ -272,8 +271,9 @@ EnvClampBounds ReaSamplerEditor::envClampBounds() const {
 
 void ReaSamplerEditor::applyParamControl(int id, double value, int segment) {
     if (id == static_cast<int>(ParamControl::kKeyTrack)) {
-        // keyTrack sits beside the play bundle (0..200% over kKeyTrackMax); the knob maps 0..1.
-        params_.keyTrack = clamp01(value) * kKeyTrackMax;
+        // keyTrack sits beside the play bundle, so it takes deck_values' own pair rather than
+        // the PlaySeconds binding.
+        params_.keyTrack = instrument::ui::keyTrackFromNorm(value);
     } else {
         applyControl(id, params_.play, value, segment);
     }