Formalize knowledge and agency layers

[Jason-Doyle]

Summary

• Add typed Knowledge and Agency operation layers with shared classification across embedded and PostgreSQL runtimes.
• Expose kernel.knowledge, kernel.agency, and kernel.retail while preserving every existing top-level method and Agent Intent operation.
• Route retail inventory, payment, and reservation timers through a compatibility adapter.
• Add layer-aware catalogs, package exports, tests, and API documentation without changing flat operation ordering.

Compatibility

• No operation was removed or renamed.
• Existing scopes, envelopes, receipts, idempotency, and runtime semantics are unchanged.
• CatalogDescription.operationLayers is optional for existing implementers; concrete kernel catalogs return it as required metadata.

Validation

• 35 release and PostgreSQL tests
• Package runtime and type smoke tests
• Three-run live and published SRE benchmark verification
• Production container build