Address review follow-ups for slider and tabs accessibility semantics

[Copilot]

This follow-up addresses review comments on the 1.0.0 branch where ARIA state could drift from runtime state in bq-slider, and bq-tabs could generate broken tab/panel relationships from missing or unsafe tab IDs. It also corrects the radio documentation to match the actual required-field implementation.

• Slider: keep ARIA state live during drag

  • Update aria-valuenow and aria-valuetext on the internal range input during input, not only after the committed change
  • Keep the visible value display in sync without re-rendering the host

• Tabs: make generated ARIA links safe

  • Generate tab/panel IDs only from non-empty tab IDs
  • Encode generated IDs so tabs with spaces still produce valid id / aria-controls / aria-labelledby relationships
  • Skip ARIA linking when there is no matching rendered tab button, avoiding orphaned references

• Docs: align radio accessibility wording with implementation

  • Replace the aria-required wording in docs/components/radio.md
  • Document that required semantics are conveyed by the native required attribute on the internal radio input

• Coverage

  • Add regression coverage for:
    • live slider ARIA updates during drag
    • tabs without IDs not producing invalid ARIA references
    • tabs with spaced IDs producing stable encoded tab/panel links

<bq-tabs active-tab="needs space">
  <div data-tab-item id="needs space" label="Needs Space"></div>
  <div data-tab="needs space">Panel</div>
</bq-tabs>

This now renders a safe linked pair such as tab-needs%20space ↔ panel-needs%20space instead of relying on raw user-provided ID text.

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[Copilot]

Pull request overview

This PR improves accessibility-related behavior in core UI components and aligns documentation around required radios, as a follow-up to feedback in #11.

Changes:

• Update bq-tabs ARIA id generation to avoid invalid ids when tab ids are missing and to encode ids containing spaces.
• Update bq-slider to keep aria-valuenow/aria-valuetext in sync during live input without re-rendering.
• Adjust bq-radio docs to reflect that required is conveyed via the native internal required attribute (not aria-required).

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/tabs-tooltip.test.ts	Adds coverage for missing tab ids and space-containing tab ids to validate ARIA linking behavior.
tests/slider-pagination.test.ts	Adds coverage ensuring slider live input updates value text + ARIA attributes without committing value attr.
src/components/tabs/BqTabs.ts	Encodes/guards generated tab & panel ids and conditionally applies ARIA attributes.
src/components/slider/BqSlider.ts	Adds helper to sync ARIA value attributes during input/change handlers.
docs/components/radio.md	Corrects required/accessibility guidance to match implementation.

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