feat: add catalog verification system

[jmagar]

Summary

Turns the Aurora device catalog into a URL-addressable, CI-enforced cross-platform verification system.

• Adds shareable catalog routes and URL state for item, platform mode, viewport, theme, filters, and search
• Gives all runtime UI, block, and page registry items real visual previews
• Adds a 176-item × 4-viewport Playwright crawl with JSON/Markdown reports and screenshots
• Adds production hosting under /catalog/ in the existing standalone Aurora image
• Adds a one-command Tauri Android smoke test with build, emulator, install, WebView CDP, native Back, screenshots, logs, and cleanup
• Adds a path-scoped browser and Android CI workflow with evidence artifacts
• Fixes accessibility defects discovered by the crawl in Persona, Calendar, DatePicker, Rating, and representative gallery demos

Verification

• Browser catalog matrix: 704/704 checks passed
• Navigation and screenshots: 6/6 passed, 710 total Playwright tests
• Android smoke: passed on the axon_test x86_64 emulator
  • 176 registry items
  • Tauri runtime present
  • native Android Back restored the prior catalog route
  • 7 platform capability cards
  • safe-area padding applied
  • zero overflow, runtime errors, fatal logs, or failures
• Production standalone catalog:
  • /catalog redirects correctly
  • item and platform deep links return 200
  • assets use immutable caching; HTML uses short revalidation
• Repository lint, TypeScript, generated checks, unit tests, registry checks, Storybook, workflow policy/actionlint, and production build pass

The legacy top-level Compose android/ tree remains untouched.

[jmagar]

Fixed the Android job in .github/workflows/device-catalog.yml: sdkmanager installs the emulator and cmdline-tools packages under $ANDROID_HOME, but their bin dirs were never added to PATH, so the subsequent avdmanager create avd / emulator invocations would fail with command-not-found. Added $ANDROID_HOME/emulator, $ANDROID_HOME/cmdline-tools/latest/bin, and $ANDROID_HOME/platform-tools to $GITHUB_PATH (and exported PATH for the same step) right after the sdkmanager install. Validated with actionlint (clean; a pre-existing SC2129 style nit that my added lines would have triggered was also cleaned up).