Propagate shared credential-routing section (Codex, Claude, Grok, llm-connect) from state-hub template via scripts/propagate_credential_routing.py.
Initial repo structure per ADR-003: CLAUDE.md, Makefile, workplans/. No implementation yet — repo claims its OAS stack layer. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>