A11y | Name filled FIB blanks with the chosen value

[BrianGenisio]

Summary

Filled FIB blanks now use the chosen value as their accessible name (audit A3, WCAG 4.1.2 / 1.3.1). Empty blanks keep the blank N placeholder.

Closes #26.

Changes

updateBlankDisplays drops the server-stamped aria-label when a value is present, so the visible text is the name. Empty blanks restore blank N. Matching already does this on the selection area.

The Wave 0 characterization test now asserts the fixed contract. Axe did not flag this (aria-input-field-name is A2), so the baseline is unchanged.

Test plan

• npm test (A3 characterization asserts filled blanks drop aria-label and empty blanks restore it)
• Confirm unit and axe PR checks stay green (axe floor should not change)
• Manual: fill a blank, confirm the name is the value; clear it and confirm blank N returns

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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• test/a11y-characterization.test.js

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• test/a11y-characterization.test.js

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📝 Walkthrough

Walkthrough

updateBlankDisplays removes aria-label from filled blanks so their visible values provide the accessible name. Empty blanks receive positional labels such as blank 1. The accessibility characterization test verifies both filled and empty blank states.

Merge Risk: ⚪ Minimal · up to e9fd5

This localized accessibility change updates filled blanks to use their visible value as the accessible name while preserving the placeholder for empty blanks; no actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main accessibility change: naming filled FIB blanks with the chosen value.
Description check	✅ Passed	The description directly explains the FIB blank naming change, test updates, and expected empty-state behavior.
Linked Issues check	✅ Passed	The changes satisfy issue #26 by exposing selected values, restoring blank N for empty blanks, and updating the A3 test.
Out of Scope Changes check	✅ Passed	The changes are limited to FIB blank accessibility labeling and its characterization test, with no unrelated code changes.

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[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In `@test/a11y-characterization.test.js`:
- Around line 90-93: Update the accessibility test assertion around the
setAttribute call to match the complete positional blank-label expression,
specifically requiring i + 1 rather than accepting any interpolated value.
Preserve the existing assertion that empty blanks restore the placeholder name.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

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Configuration used: Organization UI

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Reviewing files that changed from the base of the PR and between 509e347 and 3c1a982.

📒 Files selected for processing (2)

• public/modules/fib.js
• test/a11y-characterization.test.js

Included review availability: 3 reviews are currently available. Based on recent review activity, included reviews refill at 4 per hour.