feat: Sprint 3 schemas — task_risk_profile, trust_capability_profile,…

[rayyagari2-create]

… runtime_authorization_decision, audit_event

Pull Request

Summary

What changed

Rationale

Testing / validation

Extraction safety confirmation

• No private repository names or paths (use [PROJECT_REPO] as placeholder)
• No product names from any private implementation
• No customer, supplier, or vendor names (unless the framework's behavior depends on the named tool Postgres, AGT, Claude Code are acceptable)
• No production data values
• No internal architecture details that are not also public

Checklist

• Change is scoped to a single area (concepts/docs, case study, schema, hook example, or example)
• Extraction safety check passed (see above)
• CHANGELOG.md updated (if user-visible)
• Cross-references updated if terms or paths changed
• Rationale is in the description (what problem does this solve for the reader)