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A Frozen Test Can't Justify a Patch: Lease-Bound Freezes and Witnessed Properties for Agent Patches

This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.

The most expensive test in an agent patch is the one nobody runs. It sits in the suite, green, on a quarantine list, and the patch quietly points at it as proof. Here is the conclusion first: three kinds of test evidence should never share one bucket — properties, examples, and frozen tests. Only t…

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  1. 2026-10-20 10:22 · DEV Community — AI
    A Frozen Test Can't Justify a Patch: Lease-Bound Freezes and Witnessed Properties for Agent Patches

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