Rebuild the chrome band: full-width piano strip with uniform key widths, note tooltips, one toolbar font

src/shell/instrument/reasampler_editor.h

@@ -130,6 +130,7 @@ private:
         kControl,         // a knob-deck element (index = control id)
         kCurveNode,       // a velocity-curve control point (index = point index)
         kVelKnob,         // the chrome preview-velocity radial knob
+        kStripKey,        // a piano-strip key (index = MIDI note); carries the name tooltip
         kCurveButton,     // the chrome mini curve-preview button (opens the popup)
         kPopupClose,      // the curve popup's Close (x) button
     };
@@ -160,6 +161,9 @@ private:
     // Chrome: title band + Browse nav + the control row (root strip, preview, velocity knob,
     // curve button, channel toggle).
     void paintChrome(LICE_IBitmap* bmp, const FaceLayout& fl, bool empty);
+    // The hovered piano key's note-name chip. Drawn after every band — it overhangs the
+    // chrome into whatever is below it.
+    void paintChromeTooltip(LICE_IBitmap* bmp, const FaceLayout& fl, int w, int h);
     // Waveform: the channel lane(s), the loop/start markers, and the envelope overlay.
     void paintWaveform(LICE_IBitmap* bmp, const Rect& band);
     // Decks: the group fence + caption + compact caption toggles + radial knobs with
@@ -417,7 +421,6 @@ private:
     int dragStartY_ = 0;                  // grab y (px), for the vertical scrollbar-thumb drag
     int dragCurX_ = 0;                    // live cursor x (px) during a drag — updated in onMouseMove
     int dragCurY_ = 0;                    // live cursor y (px) during a drag — updated in onMouseMove
-    int dragStartRoot_ = 60;              // the root note at grab time
     InstrumentParams dragStartParams_;    // params_ snapshotted at grab; restored on capture-loss
 
     // Waveform-marker drag: which marker + the marker set snapshotted at grab time, so the