Field Notes

How a retryable timeout can make every watchdog test pass while a stalled provider stream still hangs your session.

A real agent can work in a clean worktree without a signing key. See the delegation boundary that yields a candidate, never a self-issued PASS.

If your agent can author its own success, your checks are decoration. Learn the structural split that keeps a harness from grading itself.

Nine defects appeared only when the Ranex CLI was driven like a new operator would use it. Here is what to test at your tool surface.

A valid credential is not proof of what it was about. Learn how six false PASS paths exposed one weak observation boundary.

A signature can prove who made a record, not whether the policy deciding it came from a trusted committed state.

Exit code zero can conceal skipped or missing tests. Freeze outcomes and judge them against a manifest instead.

Mutation testing exposed 59 refusal paths no test executed. Learn how to measure the safety net instead of trusting a green suite.

Learn why a stable-looking test report is not evidence, and how rerunning checks against disk exposed a 12% flaky suite.

Ranex gates Ranex. Here are the real failures that came out of pointing a verification kernel at its own test suite, including the ones that had already passed human review.