Add integration harness and click targeting for 0.1.35-rc.3

[Ring-wdr]

Summary

• add a minimal repo-owned integration harness for browser-backed CLI validation
• expand interact click targeting beyond CSS selectors with --text, --role, --nth, and --strict
• harden CLI stdout writes and bump the prerelease lane to 0.1.35-rc.3

Validation

• npm run build
• npm test
• README or docs updated when behavior changed
• npm run test:integration

Maintainer Notes

• The harness intentionally avoids port 3000 and validates the minimal regression set: session open --format json, tree stats, structured search, structured source reveal, and click targeting/delivery.
• This stays on the prerelease lane so the new browser-backed harness and click targeting model can soak on next before any stable release.
• Follow-up work remains separate: broad structured-search payload trimming, extending the new targeting model to type/press, and deciding whether the integration harness should join CI or stay manual/prerelease-only.