v1.3.1 — Consistency hardening (versioning, Q-Layer cleanup, JSON-LD coverage, CI)

This is a doctrinal maintenance release: it does not change the conceptual stack, but fixes integrity and adoptability issues.

Fixed

• Version consistency across:
  • README (latest release)
  • CITATION.cff
  • CHANGELOG
  • links.json
  • doctrinal JSON-LD graph (repository + doctrine term)
• Removed duplicated section in layers/q-layer.md ("Traceability of non-actions") and consolidated the normative version.
• Fixed a malformed Markdown code fence in implementations/better-robots-txt.md.

Improved

• Expanded coverage of ssa-e-a2-dual-web-doctrine.jsonld to index first-rank artifacts (layers, patterns, rules, specs).
• README now references artefacts/ specs explicitly.
• Added onboarding docs:
  • READING-GUIDE.md
  • ECOSYSTEM.md

CI

• Added minimal CI to validate:
  • JSON/JSON-LD syntax
  • Markdown fence balance
  • internal relative links
  • cross-file version parity