- Add a test source set to spi with bind, service registry and platform value contracts
- Prove the DataType probe contract, the ExternalDataProvider defaults and the string-only provider namespace claims
- Prove Identifier parsing and rendering
- Cover the data version, primitive and vector director handlers
- Cover the vanilla export identifier, block state, orientation, request and settings values
- Cover the structure adoption limits, diagnostics and result invariants
- Cover the pregen mantle backpressure, heap reclaim urgency, empty cache, listener defaults and diagnostic descriptions