Add accessibility audit command (WCAG / platform guidelines) #99
Description
The snapshot gives the raw accessibility tree, which is useful. There is no structured audit that flags:
- Missing or insufficient labels
- Touch target size issues
- Missing hints
- Contrast issues
An audit accessibility (or similar) command that reports violations against WCAG or platform guidelines would let an agent build accessible apps by default.
Proposal: Add a command (e.g. audit accessibility or accessibility audit) that:
- Takes the current snapshot (or a snapshot scope).
- Runs a set of checks: missing labels, small touch targets, low contrast, missing accessibility hints, etc.
- Outputs a list of issues with element refs and severity/remediation hints (and optionally JSON for tooling).
Implementation could be in-process (analyze snapshot + screenshot for contrast) or delegate to platform tools (e.g. XCTest accessibility audits, Android Accessibility Scanner) where available.
Acceptance criteria:
- Command runs a defined set of accessibility checks on current UI
- Output includes element identification (ref or selector) and short description
- At least: missing labels, touch target size, contrast (if feasible)
- Docs and skill updated