feat(android): add accessibility XPath audit CLI and report

[quanruzhuoxiu]

Summary

• add the TypeScript accessibility-xpath-audit.ts capture CLI
• persist screenshots, exact source XML, normalized UiNode trees, visual-element inventories, replay results, and metadata
• generate the downloadable static HTML audit report for source, fresh, and revisit verification

Stack

• depends on feat(android): add standalone accessibility XPath audit core #2891
• contains only the CLI and static report layer relative to feat(android): add standalone accessibility XPath audit core #2891
• next: feat/android-xpath-audit-playground-standalone adds the live Playground experience

The stack is self-contained and does not rely on any other unmerged feature PR.

Validation

• pnpm --filter @midscene/android exec vitest --config vitest.config.ts --run tests/unit-test/accessibility-xpath-audit.test.ts (7 tests)
• pnpm exec tsc -p packages/android/tsconfig.json --noEmit
• pnpm exec nx build @midscene/android --skip-nx-cache
• pnpm run lint