The converged-declaration guard still expected `hosts` on a container after c978aa7 took it off
every container, and the adopted-anchor fixture reported no outward link after ADR 0140 made a
filter depend on one. Both failed under `make check` since 2026-09-28/30; the build does not run the
check, so the mesh never saw it. The guard is re-captured with the change named — a field an older
host never sees is the one change it permits — and the fixture reports a link as a real host does.
jschoubben