Bake window: derived note lengths carry exact durations, not ladder rungs — a long take is no longer cut at 384 beats

Hold keeps its picker. Also: one home for the %-fold, duration-ordered Hold travel, and a corrupt tail degrades to absent rather than fabricating one.

src/core/instrument/map/trigger_seam.cpp

@@ -10,8 +10,10 @@ std::int64_t triggerPlayLength(double lengthFraction,
                                std::int64_t frameCount,
                                std::int64_t startFrame) {
     const std::int64_t postStart = (std::max)(std::int64_t{0}, frameCount - startFrame);
-    if (postStart <= 0 || lengthFraction <= 0.0) return 0;
-    return static_cast<std::int64_t>(lengthFraction * static_cast<double>(postStart) + 0.5);
+    if (postStart <= 0 || !(lengthFraction > 0.0)) return 0;  // also catches NaN
+    const double frac = (std::min)(1.0, lengthFraction);
+    const auto len = static_cast<std::int64_t>(frac * static_cast<double>(postStart) + 0.5);
+    return (std::min)(postStart, (std::max)(std::int64_t{0}, len));
 }
 
 }  // namespace reasampler::instrument::map