- settled: stack shape, wasm-clean validated, handlebars 6.4 pin, strict-mode posture, template-is-code, determinism - prior art: typebox-rs codegen, alkminer-v1 ShaderBuilder, alktype plans as implied spec, alkhttp adapters - OQs: output unit, context source (BAST vs plans), interpreter/ compiler duplication cut, delegation boundary, validation strategy, POC scope