The new gateway landed at 77.6%, dragging the ACL score under its 90 break
threshold. The gaps were all real behaviour nobody was asserting: a failed or
empty read being mistaken for "nothing there yet" and followed by a blind
write, a `results`-less response taking down the resolve with an
ArgumentNullException, the CRS headers going to Objecttypen (which is not a geo
API), and the write body being sent chunked. ACL score 86.63% → 92.08%.