A11y | Bump design-system for D1 card contrast

[BrianGenisio]

Summary

Closes #30. This app now consumes the design-system D1 Horizontal Cards change: inactive card text stays at ≥4.5:1; chrome (inset stroke vs drop shadow) marks the centered card.

Also records D2 as closed (PR #46) on the issue map. That number is not on the D1 or bump D1 rows.

Changes

Submodule public/design-system points at da75b17 (DS PR #31). No app widget changes.

Characterization locks the inactive-card rule so it cannot regain opacity, and so cards are not aria-hidden.

Axe floor color-contrast is 5 → 1. Matching empty is clear in both themes. The remaining node is the Sort empty-dropzone placeholder (Body-Lighter), which is not an audit ID.

Test plan

• npm test (includes D1 characterization)
• npm run a11y:ci on a dedicated examples port (matching-empty light and dark had 0 violations)
• Optional: /play with matching.md, confirm side cards still read as side cards and text is full contrast

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between a35aebd and 41a1969.

📒 Files selected for processing (4)

• a11y-audits/8-13-26/resolution-plan.md
• a11y-audits/tools/axe-baseline.json
• public/design-system
• test/a11y-characterization.test.js

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📝 Walkthrough

Walkthrough

The design-system submodule now references the D1 revision. A characterization test verifies inactive horizontal cards use full-contrast styling and do not set aria-hidden. The axe baseline records fewer color-contrast findings and a refreshed timestamp. The accessibility resolution plan reflects the updated D1 and D2 status.

Merge Risk: ⚪ Minimal · up to 41a19

This PR updates the design-system reference and accessibility coverage for D1 card contrast without changing app widget behavior; no actionable merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the accessibility-related design-system bump for D1 card contrast.
Description check	✅ Passed	The description directly explains the D1 design-system update, accessibility coverage, Axe baseline change, and test results.
Linked Issues check	✅ Passed	The PR satisfies issue #30 by updating the submodule to the D1 revision, preserving inactive-card accessibility behavior, clearing the matching-empty findings, and documenting the required test covera…
Out of Scope Changes check	✅ Passed	The changes remain within scope. They update the D1 submodule, add focused characterization coverage, adjust the related accessibility baseline, and update tracking documentation.

Full details: Linked Issues check

Explanation

The PR satisfies issue #30 by updating the submodule to the D1 revision, preserving inactive-card accessibility behavior, clearing the matching-empty findings, and documenting the required test coverage.

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