- 🖲️ Deck controls rebuilt on the arena.mjs mobile-button idiom: color- coded fill+outline pads with distinct idle/hover/pressed states — ‹ › jump pads, 1/4 + 1/8 chop holds, reset. - 🎚️ Volume wedge outlines its true hit box on hover. - 📏 Rate + sync readouts are fixed-width (padded ms and n/64 fields) so glyphs never shift — frame OCR can anchor on them. - 🖥️ prompt '-' now closes a preview pane instead of spawning a stray window: preview-preload exposes acElectron.closeWindow via contextBridge, main.js adds preview-close IPC + a setWindowOpenHandler (ac://close → close; externals → system browser; else deny). - scrub-jam cursors: self-healing reinstall after reloads (never vanish or pin at center), and mouse-down is unmistakable — 1.6× scale + glow. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>