feat: fix a11y issues in switch component

[fateeand]

Fixing accessibility issues in switch component

Validation rules:

Validated using Playwright accessibility tests, Lighthouse tool, and manual checks including keyboard tab navigation and screen reader testing.

Full doc with rules

---

Playwright axe-core validation results:

State before:

Component	aria-roles	color-contrast	label	tabindex	target-size
Switch	-	❌	❌	-	-

---

State after:

Component	aria-roles	color-contrast	label	tabindex	target-size
Switch	✅	✅	✅	✅	✅

---

Checklist

• Keyboard Navigation
  All interactive elements are fully operable via keyboard only, including buttons, inputs, menus, dialogs, sliders, drag-and-drop, tree views, multi-selects, and composite widgets. No traps or dead ends.

• Focus Management
  Focus is visible, logical, moves in predictable order, trapped where necessary (modals/popovers), and restored after closing. Focus is perceivable in all interactive widgets.

• Semantics / ARIA

  • Semantic HTML is used correctly.
  • ARIA roles, states, and properties are applied only when needed.
  • All form fields, tables, and widgets (including autocomplete, tree selects, tree tables, drag-and-drop, sliders, and multi-selects) are properly labeled and accessible.

• Color / Contrast

  • Text and interactive elements meet contrast requirements (≥4.5:1 normal text, ≥3:1 large text).
  • Focus and selection indicators are visually perceivable.
  • Color is not the only indicator of state.

• Screen Reader / Assistive Technology

  • All content, labels, and dynamic updates are perceivable via screen readers.
  • Live regions announce status messages, alerts, modals, notifications, and dynamic changes.
  • Interactive widgets provide proper announcements of selection and updates.

• Responsive & Zoom

  • Components function correctly and remain readable at all viewport sizes and up to 200% zoom, including mobile and touch devices.
  • Prefer em/rem units over px where scaling is required.

• [N/A] Error Handling

  • Errors are clearly identified visually and programmatically.
  • Form inputs use aria-describedby or aria-invalid for inline messages.
  • Instructions and suggestions are accessible.

• [N/A] Dynamic Content / Updates

  • Status updates, alerts, notifications, and modals use live regions.
  • Updates do not disrupt focus or user control unexpectedly.

• Interaction Feedback / States

  • All interactive states (hover, focus, active, disabled, drag-and-drop, reordering, multi-select) are visually perceivable.

• [N/A] Authentication & Sensitive Actions

  • Inputs and actions involving sensitive data provide accessible instructions, feedback, and error messages.

• Predictable & Controllable UI

  • Components behave consistently and predictably.
  • Popups, modals, autocomplete suggestions, drag-and-drop, and dynamic content allow user control.

---

Release notes:

• Fix a11y issues in switch component

[github-actions]

Coverage report for library

St.❔	Category	Percentage	Covered / Total
🔴	Statements	48.13%	3544/7364
🔴	Branches	43.56%	1590/3650
🔴	Functions	47.33%	666/1407
🔴	Lines	48.67%	3302/6785

Test suite run success

1212 tests passing in 34 suites.

Report generated by 🧪jest coverage report action from a832517

[github-actions]

Playwright test results

 90 passed

Details

 90 tests across 4 suites
 3 minutes
 a832517
 For details, download the Playwright report

[Copilot]

Pull request overview

This PR improves the accessibility of CpsSwitchComponent in the UI kit by adding proper ARIA semantics/labels, improving focus visibility and target sizing, and re-enabling automated a11y coverage for the Switch page in Playwright.

Changes:

• Add ariaLabel support + role="switch" and improve focus handling for the switch input.
• Update switch styling for better focus ring, sizing (rem units), and disabled-state contrast.
• Add/extend unit tests and re-enable Switch in Playwright accessibility coverage; update composition docs/examples.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
projects/cps-ui-kit/src/lib/components/cps-switch/cps-switch.component.ts	Adds ariaLabel, logs missing labeling for a11y, and switches focus implementation to ViewChild.
projects/cps-ui-kit/src/lib/components/cps-switch/cps-switch.component.html	Adds role="switch", binds aria-label, and marks decorative slider as aria-hidden.
projects/cps-ui-kit/src/lib/components/cps-switch/cps-switch.component.scss	Updates sizing to rem, improves focus ring styling, and adjusts disabled colors for contrast.
projects/cps-ui-kit/src/lib/components/cps-switch/cps-switch.component.spec.ts	Extends tests to cover new a11y attributes and improves some assertions.
projects/cps-ui-kit/src/lib/components/cps-checkbox/cps-checkbox.component.ts	Updates focus implementation to use ViewChild instead of querying the host element.
projects/cps-ui-kit/src/lib/components/cps-checkbox/cps-checkbox.component.html	Adds a template ref for ViewChild focus support.
projects/composition/src/app/pages/switch-page/switch-page.component.html	Updates example to provide an ariaLabel for an unlabeled switch instance.
projects/composition/src/app/pages/switch-page/switch-page.component.scss	Minor layout tweaks using rem-based spacing.
projects/composition/src/app/api-data/cps-switch.json	Documents the new ariaLabel prop and updates wording for existing props.
playwright/cps-accessibility.spec.ts	Re-enables the Switch route for automated axe-core validation.