Performance CI Load testing

We need CI performance benchmarking.

https://github.com/marketplace/actions/continuous-benchmark
https://k6.io/blog/load-testing-using-github-actions
https://docs.gitlab.com/ee/user/project/merge_requests/load_performance_testing.html

Review the Continuous Benchmark marketplace action, the k6 GitHub Actions load-testing guide, and GitLab's load performance testing documentation. Define a CI performance-benchmarking approach from these references and establish what benchmark results and pass/fail behavior would constitute completion.

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