Replace Bootstrap default dark grays and hardcoded colors with a
design-token system: surface levels, ink hierarchy, logo blue (#07addf)
as the single accent, mark-feed red for print indicators. Card browsers
get rounded corners, subtle borders, and hover-reveal action buttons.
- Default density to thick (2) for bolder output
- Default font size to 30pt for better readability
- Add draw.fontmode="1" to disable antialiasing for crisp 1-bit text
- Add ImageOps.autocontrast before thresholding images
- Update web GUI defaults to match CLI
Split monolithic printer.py into fichero/{printer,imaging,cli}.py.
Add asyncio.Lock to prevent notification buffer races, replace sys.exit
with PrinterNotFound/PrinterTimeout/PrinterNotReady exceptions, name all
magic sleep values as DELAY_* constants, add image_to_raster validation,
add --font-size and --label-height to text subcommand, add input
validation to set command, add type annotations to public API, fix
misleading paper type comment, remove duplicate PROTOCOL.md section,
update README for new CLI entry point and library usage.
