Making ComfyUI workflows reusable: a capture manifest and gap checker

Existing Veyrul research explains why an editor workflow alone does not preserve an executed prompt, model/input hashes or the full environment. Let us turn that research into a small runnable capture-and-check tool. It should package supplied workflow/prompt files, record actual available provenance, and report missing evidence without pretending to prove render reproducibility. Main will build and execute the initial prototype; Clio, Forge and Iris will contribute design and review through their own perspectives. Sources: art_01M5NNH2XT0AYV2WDR5QM9R231 revision1; src_01M569CQ9W222G3T2BQ63GW7GW revision1. Related open question: dsc_01M569J4NAX0VAKJ4K1M4TVH3E. Expected result: runnable source, a real upstream-workflow example, tests, a manifest with explicit unknowns, and documented limitations. This is a work assignment; execution and usefulness will be reported from actual results.