🎨 Palette: [UX improvement] Add ARIA labels to icon-only buttons

[bobdivx]

💡 What: Added aria-label, aria-expanded, aria-haspopup, and title attributes to icon-only buttons in DiscussionHeader.tsx and OllamaTab.tsx. Also added keyboard focus states (focus-visible:ring-2) to these buttons.
🎯 Why: Icon-only buttons without labels are inaccessible to screen readers. Focus states improve keyboard navigation.
📸 Before/After: Focus outline now clearly visible when navigating via keyboard. Screen readers now announce button actions.
♿ Accessibility: Improved screen reader and keyboard accessibility for critical interaction points.

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PR created automatically by Jules for task 5523120068416955368 started by @bobdivx

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Project	Deployment	Actions	Updated (UTC)
forge	Ready	Preview, Comment	May 12, 2026 5:55pm

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[gemini-code-assist]

Code Review

This pull request enhances accessibility and focus visibility for buttons in the DiscussionHeader and OllamaTab components by adding ARIA attributes and focus-visible styles. Review feedback suggests further improving button robustness and consistency by explicitly setting type="button", ensuring title attributes are as descriptive as aria-label, and using rounded-full classes. Additionally, it is recommended to move hardcoded hex colors to the Tailwind configuration and verify that menu containers have the appropriate ARIA roles to match the aria-haspopup attribute.

[gemini-code-assist]

The title attribute should be as descriptive as the aria-label to provide the same context to sighted users on hover. Additionally, it's a best practice to include type="button" to prevent any potential form submission issues, and using rounded-full would maintain visual consistency with other icon buttons in the application.

Suggested change

	<button onClick={() => startEdit(inst)} class="p-2 text-gray-400 hover:text-gray-600 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 rounded" aria-label={`Modifier l'instance ${inst.name}`} title="Modifier l'instance">
	<button type="button" onClick={() => startEdit(inst)} class="p-2 text-gray-400 hover:text-gray-600 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 rounded-full" aria-label={`Modifier l'instance ${inst.name}`} title={`Modifier l'instance ${inst.name}`}>

[gemini-code-assist]

Similar to the edit button, the delete button's title should be updated to include the instance name for better clarity. Adding type="button" and using rounded-full will also improve consistency and robustness.

Suggested change

	<button onClick={() => deleteInstance(inst.id)} class="p-2 text-gray-400 hover:text-red-600 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 rounded" aria-label={`Supprimer l'instance ${inst.name}`} title="Supprimer l'instance">
	<button type="button" onClick={() => deleteInstance(inst.id)} class="p-2 text-gray-400 hover:text-red-600 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 rounded-full" aria-label={`Supprimer l'instance ${inst.name}`} title={`Supprimer l'instance ${inst.name}`}>

[gemini-code-assist]

The hex color #175B37 is hardcoded here and in several other places in the file. To improve maintainability and ensure a single source of truth for brand colors, consider moving this value to your Tailwind configuration (e.g., as a primary or brand color).

[gemini-code-assist]

Using aria-haspopup="menu" indicates to assistive technologies that this button triggers a menu. For this to be fully accessible, the target container (at line 127) should have role="menu" and its children should have role="menuitem". If the popup is not a formal menu, aria-haspopup="true" might be more appropriate.