v2_examples/workflows — cross-model composition

Runnable examples of cross-model Workflows — chaining two distinct models, threading typed artifacts between them (designv4 §9.6). A Program composes the loops of ONE resident model (step-interleaved, parity-gated); a Workflow composes across model instances, above the engine — so the per-step hot path is unchanged and each model keeps its own interleave-parity guarantee.

The shipped example is T2I → I2V (the realistic FLUX→Wan pipeline): a text-to-image model produces an image, which conditions an image-to-video model. Run from anywhere:

python3 v2_examples/workflows/01_t2i_then_i2v.py

Script	Shows
`01_t2i_then_i2v.py`	run the cross-model workflow; the I2V stage provably consumes the generated image
`02_register_as_servable.py`	a workflow is a first-class servable — declared `requires`, validated, addressable by `workflow_id` like a model; the declarative catalog + `WorkflowRegistry`