feat(guardrails): refusal ends the attempt; doctrine-citers census; make test suite=

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.

lib/project-archetypes/rest-api-node.md

@@ -55,7 +55,7 @@ API backend Node.js pure (Express / Fastify / Koa / Hapi / NestJS), sans fronten
 - **UI/UX** : N/A
 
 ## Typical pain points
-- Pas de versioning API (/api/v1/) — flag CLAUDE.md : "Web APIs always versioned"
+- Pas de versioning API (/api/v1/) — flag CLAUDE.md : "Web APIs — always versioned"
 - Validation input absente (pas de Zod/Joi/class-validator)
 - SQL injections (string concat dans queries brutes)
 - Auth faible (pas de hash password, ou MD5/SHA1)