docs(sbom): add SBOM reference page + withDocHelp on SBOM dashboard
- docs/sbom.md: what SBOM is, lockfile semantics, 5-level maturity standard,
gap types A–E, per-ecosystem guidance, Syft OSS tooling, inter-repo task
communication convention, ingest commands, compliance check commands
- sbom.md: wire withDocHelp(h1, "/docs/sbom") — ? button on page title
- observablehq.config.js: add SBOM entry to Reference nav section
EP-CUST-002 registered: Syft-based comprehensive SBOM generation
Task 5f8cade5 created: [repo:railiance-bootstrap] Add Ansible lockfile
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
tegwick
7caaec25a2