Fix accessibility defects in the tool chooser tab strips - #2192
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The logo images sit inside links whose visible text already names the tool (e.g. "Positron", "VS Code"), so a description would duplicate it for screen readers. An empty alt marks them as decorative. Fixes axe image-alt findings across 21 get-started/manuscripts pages. WCAG 2.2 1.1.1 Non-text Content (Level A).
These are page-navigation links styled as tabs, not the ARIA tabs pattern (their children don't switch panels in place). role="tablist" required role="tab" children, which they never had — and role=tablist required a <ul> to hold only <li>, but each strip's <ul> had a directly-nested <h3>, which is invalid regardless of ARIA. - Drop role="tablist"/"presentation"; the visual nav/nav-tabs/nav-link styling is untouched. - Wrap each list in a <nav> with an accessible name. - Move the get-started heading out of the <ul>, above it. - Set aria-current="page" alongside the active class so assistive tech gets the same signal sighted users get from the styling. - Mark the extensions listing chooser's decorative Bootstrap icons aria-hidden="true" while touching this markup. Fixes axe aria-required-children findings across get-started, manuscripts, and extensions pages. WCAG 2.2 1.3.1 Info and Relationships (Level A).
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Summary
Two defects in the three hand-written tool chooser strips (get-started, manuscripts, extensions):
altattribute. Each image sits next to link text that already names the tool, soalt=""marks it as decorative. Fixes axeimage-alt(WCAG 2.2 1.1.1, Level A).role="tablist", but the children are page-navigation links, not ARIA tabs. Removed the tab roles, wrapped each list in a<nav>with an accessible name, moved a stray<h3>out of a<ul>, and addedaria-current="page"to the active link. Fixes axearia-required-children(WCAG 2.2 1.3.1, Level A, critical impact).Also added
aria-hidden="true"to the decorative Bootstrap icons in the extensions listing chooser, while touching that markup.Test plan
localStoragestill holds the choice