ci(npm): add published lazycodex-ai smoke checks

[PeterPonyu]

Summary

Closes #4.

Adds a published-package smoke check for lazycodex-ai so CI verifies the real npm install entrypoint from a clean temporary directory.

The check covers:

• bunx lazycodex-ai@latest --dry-run install --no-tui --codex-autonomous
• npx -y lazycodex-ai@latest --dry-run doctor

Both commands must route through oh-my-openagent / omo as expected.

Validation

• git diff --check
• npm test
• npm run pack:dry-run -- --json
• npm run smoke:published

---

Summary by cubic

Adds CI smoke tests for the published lazycodex-ai to ensure bunx/npx dry-runs route through oh-my-openagent (omo) from a clean temp dir. Runs manually or nightly to catch registry and entrypoint regressions.

• New Features
  • Adds npm-registry-smoke.yml workflow with version-concurrency and a daily cron.
  • Validates bunx install dry-run and npx doctor dry-run, asserting expected omo stdout.
  • Supports version/dist-tag via LAZYCODEX_AI_SMOKE_VERSION (default latest).
  • Adds smoke:published script to run the check.

^{Written for commit 818a1f9. Summary will update on new commits.}