feat: review custom accessibility primitives

[smiggleworth]

Summary

• add opt-in reject-custom-accessibility-primitives skill review prompt
• detect likely dialog, command-menu shortcut, and focus trap/restoration reimplementations
• report maintained @askrjs/ui / @askrjs/themes guidance and support inline suppression
• add positive, negative, and suppression smoke coverage

Validation

• npm run typecheck
• npx vitest run tests/cli.smoke.test.ts --pool=forks --maxWorkers=1: 58 passed
• npm run check: passed
• npm run test:templates: existing SSG fixture fails because Input lacks min/type props

Closes #16

[Copilot]

Pull request overview

Adds an opt-in askr skills review prompt to flag likely reimplementations of accessibility-sensitive UI primitives (dialog, command-menu shortcuts, focus trapping/restoration), with documented inline suppression and smoke coverage to validate behavior.

Changes:

• Introduces the reject-custom-accessibility-primitives skill review prompt and documents it.
• Adds smoke tests covering detection and inline suppression for the new prompt.
• Extends the review runner to support prompt-defined inline suppression.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
tests/cli.smoke.test.ts	Adds smoke coverage for listing the new prompt, flagging dialog-like markup, and honoring inline suppression.
src/bin/skill-review.ts	Defines the new review prompt and adds support for prompt-level inline suppression in the evaluator.
docs/skill-review-prompts.md	Documents the new prompt and its inline suppression directive.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.