borb-sh

Write comments and docs at high semantic density: terse, present-tense, unsold, mostly self-documenting. Use when writing or reviewing code comments, prose/canon/, or any doc for density and house voice, or when comments narrate change ("used to", "no longer", "renamed", "as of 0.x") instead of stating what is.

Maintain prose/canon/: the canonical, high-level design documentation. Use when adding, consolidating, or auditing canon docs, and when a code change makes a canon doc stale (a renamed API, a moved seam, a changed invariant).