# Tasks

- [x] Define single-feature requirements and implementation plan before code.
- [x] Add the pinned decoder and bounded owner boundary.
- [x] Implement lossless scalar metadata facts and compiler-version evidence.
- [x] Integrate worker/provider contracts and summary/historical compatibility.
- [x] Verify producer, worker and public boundary behavior with owned fixtures.
- [x] Run relevant repository checks and prepare a separately scoped PR.