- Custom terminal canvas: one buffer, one write() per frame
- Threaded audio via Nim channels (20fps → 60fps)
- 6 phosphor palettes (green, amber, cyan, blue, white, red)
- All tuning constants at top of osc.nim
- No illwill dependency, binary 352KB → 200KB
- CRT effects use same palette as trace
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>