Sync Yield from Intelligence Flow @ ba7ac8e08656

[operator-stack-publisher]

What this sync releases

Evaluation cases and evidence boundary

• Add six provenance-bound skill-conversion cases with their thin model-facing
  skills and Yield workflow programs.
• Add a reproducible source-size harness and fail-closed summary validator.
• Keep raw transcripts, temporary repositories, and large run artifacts out of
  Git; published behavior summaries must bind an immutable artifact digest.
• Validate the same evaluation surface in both the source tree and projected
  public repository.

Projection provenance

Generated from operatorstack/intelligence-flow@ba7ac8e086564039b94ac3dd4cf5b82a247ba82f.
Review provenance, tests, and examples before merging.