feat: legible ReaSampler 9000 editor — bigger knobs, ms time constants, per-ring double-click reset, and an antialiased draw pass

src/shell/instrument/editor_input_chrome.cpp

@@ -80,6 +80,18 @@ bool ReaSamplerEditor::mouseDownChrome(const FaceLayout& fl, int x, int y) {
     return contains(cr.controls, x, y);
 }
 
+bool ReaSamplerEditor::doubleClickChrome(const FaceLayout& fl, int x, int y) {
+    // The preview-velocity dial answers the same reset gesture the deck's knobs do — it is a
+    // radial knob drawn by the same primitive, so a user who learns the gesture there expects
+    // it here. Resolved against the whole cell, not the circle: the cell IS the knob's target
+    // on this surface (there is no neighbouring control to steal from).
+    if (selectedId_.empty() || !processor_) return false;
+    if (!contains(fl.chrome.velCell, x, y)) return false;
+    processor_->setPreviewVelocity(kPreviewVelocityDefault);
+    invalidate();
+    return true;
+}
+
 void ReaSamplerEditor::dragChrome(const FaceLayout& fl, int x, int y) {
     const Rect& stripArea = fl.chrome.rootStrip;
     if (stripArea.empty()) return;