instrument: latch the note done at the read-head run-off, fit the migrated fades, and lift the curve dial and overlay selection into pure modules

src/shell/instrument/editor_input_waveform.cpp

@@ -29,9 +29,13 @@ bool ReaSamplerEditor::mouseDownWaveform(const FaceLayout& fl, int x, int y) {
     const OverlayArea overlay = waveformOverlayArea(fl.bands.waveform);
 
     // Envelope nodes first (they sit on top of the markers), then the wave markers. With no
-    // envelope overlay-active there are no nodes at all and the markers take every grab.
+    // envelope overlay-active — or with its deck group's enable toggle off, which makes the
+    // same params' knobs inert — there are no grabbable nodes and the markers take every grab.
     const double rate = liveSampleRate();
-    if (rate > 0.0 && overlayEnv_ != OverlayEnv::kNone) {
+    const bool nodesLive =
+        overlayEnv_ != OverlayEnv::kNone &&
+        !overlayEnvInert(overlayEnv_, params_.play.pitchEnv.enabled, params_.play.filter.enabled);
+    if (rate > 0.0 && nodesLive) {
         const std::int64_t startFrame = params_.startPoint.value_or(0);
         const StageEnvelope env = packEnvelope(overlayEnv_, params_.play, frames, startFrame);
         const double totalSeconds = static_cast<double>(frames) / rate;