Eureka is extracted from the Aetheria CultCache migration and is the Claude
Code counterpart of Epiphany. It covers the faculty loop, brief templates,
the cut map shape, the postmortem template, the worked example, a dated
comparison with Epiphany, and a changelog tying each rule to its evidence.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
