Resting pads now mix the Live track color into their base palette (ivory whites at 12%, black-key PAD_SHARP at 22%) so every key carries a subtle flavor of the hosting track — not just the bezel + held sharps. Idle backdrop similarly biases toward a deeply-darkened track color instead of the flat near-black, keeping the track flavor alive when nothing is playing. Live URL gets \`&v=<git-commit>\` appended so jweb/service-worker caches can't keep an older piece pinned between lith deploys.