Static/spec publication boundary

This surface serves the canonical AEL Protocol specification artifacts from the repository without introducing executable protocol business logic.

Publication shape: static-spec
Service identity: ael-protocol
Health endpoint: GET /health

Published canonical files:

• README.md
• REPO_MAP.md
• GOVERNANCE.md
• VERSIONING.md
• docs/CONTRACT_DISCOVERABILITY.md
• docs/OBSERVABILITY.md
• proto/ael_envelope.proto