fs-extra routes all async operations through graceful-fs, whose EMFILE
retry queue causes non-deterministic file loss on macOS APFS during bulk
copy operations (~500+ files). Approximately 50% of install runs lose
26+ files from _bmad/.
Replace fs-extra entirely with a thin native wrapper (tools/cli/lib/fs.js)
that provides the same API surface backed by node:fs and node:fs/promises.
Copy and remove operations use synchronous native calls to eliminate the
race condition. Verified across 8+ consecutive runs with zero file loss.
- Add tools/cli/lib/fs.js native wrapper with full fs-extra API compat
- Update all 40 files to require the wrapper instead of fs-extra
- Remove fs-extra from package.json dependencies
- Add 37-test suite including 250-file bulk copy determinism test
Adam Biggs
Brian Madison