ROADMAP P11 row -> 完成 with the D-A->D-A' re-pin narrative; doc index updated;
CHANGELOG 0.3.4 (Done section, bilingual) recording the endpoint-verification
catch: the original subnet-trust design was a rate-limit bypass under compose's
docker SNAT, corrected to an empty TRUSTED_PROXIES default. Register the P11
spec + plan in the doc index.