A GitHub Action that runs code review and test generation on every PR, posts findings as comments, enforces a severity gate that can fail the check, and tracks cost/latency via OpenTelemetry. This is projects 1, 5, and 6 from this path — review, test generation, observability — combined into infrastructure that runs automatically on every PR, with no human remembering to invoke it.
A GitHub Action that runs in CI and can block a merge is the strongest possible proof point for 'AI-Augmented Senior Engineer' — it's infrastructure your team depends on, not a side tool.