- Fix resolveBaseBranch to use stored branch name and consistent fusion/ prefix
for both explicit deps and blockedBy paths (was using kb/ for blockedBy)
- Add main branch checkout verification in merger before squash merge to prevent
feature code from landing on wrong branch lineage
- Align all branch prefix references from stale kb/ to fusion/ across executor,
merger, store, and routes
- Fix executor test OOM by mocking merger fully, adding fake timers to retry
tests, and switching vitest pool to vmThreads
- Update all test assertions to use fusion/ branch prefix
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>