Closes the deuda left explicit in hand-off 2026-05-27 #5: the inlined
derivation expressions in toggle-group.css duplicated Toggle's recipe
because [data-toggle-group-item] wasn't a descendant of [data-toggle].
Resolution is structural, not a drift test:
- morfo: each item declares { attr: 'data-toggle', value: v.literal(''),
severity: 'required' }. Captures structural identity — an item IS a
toggle in every observable sense (same press, same variant/color/size,
same on/off machine).
- eidos: new context.ts propagates the root's variant + size via
reactive getters; the item wrapper writes them as data-attrs on its
button. Combined with data-toggle, the item is DOM-equivalent to a
standalone <Toggle>.
- eidos css: ~150 lines deleted (base derived tokens, variant cascades,
size cascade, focus/disabled/icon-only duplicates). Toggle's recipe
now paints the item end-to-end. CSS keeps only the grouping concerns:
flex, orientation, attached, block, focus z-index, group disabled.
- composition (TSC v2.2) stays — palette overrides land on the item
under [data-toggle-group][data-color='X'] [data-toggle-group-item],
which Toggle's --toggle-palette-* chain reads at item scope.
Verification:
- DOM probe (12 combinations: 4 colors × 3 variants × 2 states) on
/uix/components/toggle-group. Computed values match bit-a-bit with
baseline pre-refactor (e.g. affirm/solid on = rgb(18,165,148),
risk/outline on = srgb(0.2,0.118,0.043), threat/ghost on =
rgb(25,17,17)).
- vitest src/uix/{morfo,eidos}: 163/163 pass.
- vitest src/uix/soma/components/toggle-group: 4/4 pass.
- npm run check: 12 errors (all pre-existing in active Words sprint;
zero added by this migration).
Drive-by: the same npm-check pass surfaced 4 stale 'orientation' refs
in words-toolbar.svelte + words-toolbar-group.svelte from this session's
earlier toolbar refactor (orientation was removed from types but not
from these soma components). Removed; brings check from 16 → 12 errors.
CLAUDE.md hand-off 2026-05-28 documents the new doctrine: when a
wrapper visually reuses another, declare structural identity in the
wrapper's morfo. Don't duplicate the cascade, don't extend TSC for one
case.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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