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.
Introduce ~/.claude/lib/project-archetypes/ with 25 archetype files
(web, mobile, APIs, CMS, infra, firmware, etc.) and the detection
algorithm in lib/archetype-detector.md. Consumed by /onboard STEP 1
to drive archetype-specific audit stacks and plugin recommendations.
Co-Authored-By: Claude <noreply@anthropic.com>
bastien