AGENTS.md requires an ADR for every permanent exception: documenting one
instead of deciding it is an error. schema.yaml, validate.py and
gen_status.py have diverged from the vendored baseline since the
migration on 2026-08-11, described in two places and decided in none.
FB-12 named the gap during the v0.3.1 upgrade.
A prefix comparison was measured and rejected: unlike AGENTS.md, these
extensions are interleaved — component sits between issue and wiki-page,
the two rules sit inside apply_rules, and gen_status replaces the issue
table rather than appending to it.
The honest price is in the consequences: the reconciliation on upgrade
has no machine contradictor. Measured on this very case — upstream
touched two of the three between v0.1.1 and v0.3.1 and nothing reported
it.
Thore Cimbal
a5667741d1