- build-and-unit saves git rev-parse HEAD before reset - backward-compat uses saved PREV to compute exact diff - Falls back to HEAD~3 diff if prev-head is missing Co-Authored-By: Claude <noreply@anthropic.com>
- build-and-unit saves git rev-parse HEAD before reset - backward-compat uses saved PREV to compute exact diff - Falls back to HEAD~3 diff if prev-head is missing Co-Authored-By: Claude <noreply@anthropic.com>