Migrating 0.3 → 0.4

0.4.0 is the colour-system release (see ADR-0001). It is additive for almost everyone — the default dist/bronto.css renders identically. There is a single breaking change, and it only bites if you used an undocumented token. The machine-readable map is MIGRATIONS.json.

The one breaking change

--orange / --orange-soft were removed. They were defined in the token mirrors but referenced by no component and documented nowhere — an orphan that contradicted the tier model. Removed under the CONTRIBUTING "provably- unreferenced surface" exception.

Migration: if you referenced --orange / --orange-soft anywhere, define it yourself in a consumer override:

:root {
  --orange: #a85f32;
  --orange-soft: rgb(168 95 50 / 0.13);
}

Most apps need to do nothing. Verify with:

rg -- '--orange' .

What's new (all opt-in, nothing to change)

• Colorways — @ponchia/ui/css/skins.css + data-bronto-skin="amber-crt | phosphor-green | e-ink" on <html>. Not loaded → no effect.
• Data-viz palette — @ponchia/ui/css/dataviz.css + @ponchia/ui/charts.json (--chart-* + dot-matrix pattern fills). Charts only.
• Tier-3 dot-matrix display tokens (--dotmatrix-glow, --dotmatrix-pulse-min) — default to a no-op.
• APCA advisory contrast column in docs/contrast.md; WCAG 2.1 AA stays the gate.

Re-pin

// package.json — 0.4 is a breaking minor under the pre-1.0 policy
"@ponchia/ui": "~0.4.0"