fix(instrument-ui): raise Disabled-cue contrast, fix stale 1.2 MASTER row, close hover/focus minors

src/shell/instrument/editor_input.cpp

@@ -37,7 +37,9 @@ void ReaSamplerEditor::onMouseDown(int x, int y) {
     // The overlay focus follows the deck (mouseDownDeck sets it), and clicking a control
     // surface OUTSIDE the envelope decks clears it. The waveform band is deliberately not one
     // of those surfaces: it IS the overlay, so editing what you selected must not deselect it.
-    if (drag_ == DragKind::kNone && contains(fl.bands.chrome, x, y) &&
+    // Chrome's own dead space (the title band, the gaps between its controls) is not a control
+    // surface either — hoverChrome answers only for chrome's actual interactive elements.
+    if (drag_ == DragKind::kNone && hoverChrome(fl, x, y).kind != HoverKind::kNone &&
         overlayEnv_ != OverlayEnv::kNone) {
         overlayEnv_ = OverlayEnv::kNone;
         invalidate();  // the chrome branches below repaint only what THEY changed