Root causes of the 2026-09-24 errors turned into mechanisms (BDR-100). hard_deny 'Routing around a guardrail': a refused command is never rerun through a wrapper, alias, heredoc, Makefile target, env file, other shell or other agent; the same clause in 14 agents and in the doctrine's sub-agent rule. make test suite=<file> runs one suite hermetically so the denied env-prefix form is never needed by hand. lib/tests/doctrine-citers.test.sh: every CLAUDE.md "Section" / § Label citation across skills, agents, lib, rules and hooks must resolve to a heading or bold label (flip-tested); its first run fixed rest-api-node.md. Doctrine 'After code changes' step 4: a changed rule, heading, label or threshold → grep every citer in the same commit.
One ask policy; mandated executors exempt from the delegation rule; skill plan satisfies the planning rule; journal line exempt from the approval gate; chore = maintenance without new behaviour; small fix on develop = bugfix; BDR-068 written as the one auto-finish exception; deploy routes to /deploy. Skills and agents follow: hotfix types by base + skips the design gate on trivial; capitalize/close create missing registries; commit-change asks the branch type; doc/seo/web-validate/refactor branch through the aiguillage; tour reports BREAKING fixes as needs-decision and runs doc-syncer two-mode; client-handover applies audit bundles from its main loop behind one gate; init-project/onboard use the 200-file graphify signal and bootstrap memory; release-candidate gates the tag push only; push wording aligned with the BDR-095 hooks; stale pointers fixed (§ Language, .gsd/ROADMAP.md, handover script path, design-gate lists).
bastien