docs: update validation framework design for hint field split and bundling clarification#463

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hdamker wants to merge 3 commits intocamaraproject:mainfrom

hdamker:docs/validation-framework-updates

Commits on Mar 26, 2026

docs: split hint field into message_override and hint in detailed design
hdamker
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docs: clarify bundled specs are included in snapshot branch archive
hdamker
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docs(validation): rename conditional level "off" to "muted"
hdamker
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