🎨 Palette: Add accessibility props to Button and RippleButton

[mknoufi]

User description

💡 What: Added explicit accessibility properties (accessibilityRole, accessibilityLabel, accessibilityHint, and dynamic accessibilityState) to the reusable Button and RippleButton UI components.
🎯 Why: Custom action buttons implemented with TouchableOpacity fail to announce their function, disabled state, or loading state (busy) to screen reader users unless these props are explicitly passed down. This ensures all buttons across the application (especially icon-only variants) are fully accessible.
📸 Before/After: N/A (non-visual structural change)
♿ Accessibility: Ensures correct semantic roles, announces loading/disabled states to screen readers, and guarantees a label is always present for interactive touch targets.

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PR created automatically by Jules for task 7856181833105527864 started by @mknoufi

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CodeAnt-AI Description

Add screen reader labels and state to shared buttons

What Changed

• Shared buttons now announce their purpose to screen readers with a label, hint, and button/link role.
• Buttons now expose disabled and loading state so assistive tech can tell when an action is unavailable or in progress.
• If no label is provided, the button text is used as the spoken label, which helps icon-only and reused buttons stay accessible.

Impact

✅ Clearer screen reader announcements
✅ Accessible icon-only buttons
✅ Fewer confusion during loading or disabled actions

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Details

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codeant-ai]

Suggestion: The accessibility label fallback can still resolve to undefined when the button is icon-only or when children is not a plain string, so assistive technologies may announce an unlabeled interactive control. Ensure a guaranteed non-empty label is always derived (for example by requiring accessibilityLabel when there is no textual label). [incomplete implementation]

Severity Level: Critical 🚨

- ❌ RippleButton can render unlabeled interactive controls.
- ⚠️ Screen readers cannot identify icon-only RippleButton actions.

Steps of Reproduction ✅

1. Open `frontend/src/components/ui/RippleButton.tsx` and note the props interface at
lines 47–63, where `icon` is optional, `label` is optional, `children` is optional, and
`accessibilityLabel` is optional, enabling icon-only usage without any textual props.

2. Observe the JSX for the ghost/outline branch at lines 285–301 where
`<TouchableOpacity>` is rendered with `accessibilityLabel={ accessibilityLabel || label ||
(typeof children === "string" ? children : undefined) }` (lines 293–296 in the PR diff):
if all three values are absent or non-string, this expression evaluates to `undefined`.

3. Consider a typical consumer of this reusable button (for example, any screen that
imports the default export from `frontend/src/components/ui/RippleButton.tsx:106`) and
renders an icon-only control like `<RippleButton icon="add" variant="ghost" />` without
providing `accessibilityLabel`, `label`, or string `children` – a usage explicitly
supported by the `icon` prop and the existing `content` rendering at lines 219–247.

4. Run the app with a screen using such an icon-only `RippleButton`, enable
VoiceOver/TalkBack, and focus the button: React Native will see `accessibilityLabel` as
`undefined` on the `TouchableOpacity`, so assistive technology announces an unlabeled
button (only the generic role), leaving screen reader users with an interactive control
that has no spoken name.

Fix in Cursor | Fix in VSCode Claude

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Prompt for AI Agent 🤖

This is a comment left during a code review.

**Path:** frontend/src/components/ui/RippleButton.tsx
**Line:** 294:296
**Comment:**
	*Incomplete Implementation: The accessibility label fallback can still resolve to `undefined` when the button is icon-only or when `children` is not a plain string, so assistive technologies may announce an unlabeled interactive control. Ensure a guaranteed non-empty label is always derived (for example by requiring `accessibilityLabel` when there is no textual `label`).

Validate the correctness of the flagged issue. If correct, How can I resolve this? If you propose a fix, implement it and please make it concise.
Once fix is implemented, also check other comments on the same PR, and ask user if the user wants to fix the rest of the comments as well. if said yes, then fetch all the comments validate the correctness and implement a minimal fix

👍 | 👎

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