Revamp the console monitor UI in examples/demo_app.rs with ANSI-colored
sections and improved layout for readability.
- Add color palette, dashboard width, and styling helpers
- Introduce banner, section, and stat line builders
- Colorize prompt, status lines, and organ snapshots
- Display validity tags for measurements and styled warnings/errors
- Restructure output into Simulation, Circulation, Heart, Organ
Snapshots, and Status sections
- Cache TTY color detection via OnceLock and respect NO_COLOR
No API changes; improvements are limited to the example app.
zack3d
a7638c411a