Cross-reference validation rules for Application Design Protocol manifests. These constraints cannot be expressed in JSON Schema alone and MUST be enforced by conforming compilers.
Rules use RFC 2119 keywords: MUST, MUST NOT, SHOULD, MAY.
Inspired by AWP validation rules R1–R32 pattern.
Validation failures MUST report:
Warnings (R9) use "severity": "warning".
"severity": "warning"