"""The BW application kit, vendored byte-identical (plan: accounts-2026-09 §4.1).

Never edited here: `scripts/vendor-check.sh` (run by `check.sh`) byte-compares each file
against the kit when it is present and against `MANIFEST.sha256` when it is not, so a
hand edit fails the suite either way; `scripts/vendor-refresh.sh` is the one way the files
change. A fix goes upstream (`.logs/planning/kit-upstream-proposals.md`) and is re-vendored.
`bw_auth.py` (the central client) is deliberately absent: it is the one file that would
couple this codebase to the server it was built on.
"""