feat(theme): add semantic tokens, focus ring, and reduced-motion support

Adds the layer feature code has been missing: tokens that name a role — page
surface, subtle border, danger — instead of a colour. Every one resolves to a
Mantine variable rather than a literal, so they follow the colour scheme for
free and cannot drift from the theme. A parallel palette of raw hexes would
have recreated exactly the problem this exists to fix.

Also closes three accessibility gaps that had no implementation anywhere in the
codebase: no :focus-visible rule, no screen-reader-only utility, and no global
prefers-reduced-motion handling.

The focus work found a real bug, and nearly introduced a worse one. Mantine
already rings its own controls, so the first attempt deferred to it with
`outline: none` on .mantine-focus-auto. That suppressed Mantine's ring without
replacing it, leaving portal buttons with no focus indicator at all — and it
only showed up in one app, because which rule won depended on stylesheet order.
The rules use identical values, so overlapping them is invisible and safe;
opting out is not. The focus test now asserts computed outline width and style,
not just pixels, since a screenshot alone would not have caught this.

`status-tone.ts` establishes the six-tone vocabulary that the 48 scattered
status→colour maps will eventually collapse onto. Nothing consumes it yet.

No visual change: the 8 existing baselines pass unmodified.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
fitse-yotor
2026-08-21 12:11:20 +03:00
parent 3d0183f12c
commit b63e07305a
8 changed files with 277 additions and 0 deletions

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