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

tests/test_sample_chrome.cpp

@@ -21,9 +21,9 @@ static int g_fail = 0;
 #define CHECK(cond) do { if(!(cond)) { \
     std::printf("FAIL line %d: %s\n", __LINE__, #cond); ++g_fail; } } while(0)
 
-static constexpr int kKnob = 26;  // stands in for knob_deck's kDeckKnobSize
+static constexpr int kKnob = 40;  // stands in for knob_deck's kDeckKnobSize
 
-static Rect chromeBand(int w = 840, int h = 620) {
+static Rect chromeBand(int w = kEditorMinWidth, int h = kEditorMinHeight) {
     return computeSampleBands(w, h, 120).chrome;
 }