v0.35.1

agent-contracts 0.35.1

Added

• evaluate workflow step — a 7th WorkflowStepSchema discriminated-union variant enabling Closed Agent Looping (Verification → Iteration back-edge). The evaluator checks whether the goal has converged and, when it has not, loops back to an earlier step. Fields: task, from_agent, evaluator_agent?, loop_to, max_iterations (1–10), inject_as?, on_exhausted? (fail_partial|escalate|abort). The runtime reads the evaluator's fixed convergence-envelope verdict (pass/fail) deterministically (bounded execution; Producer ≠ Verifier).
• Regenerated schemas/dsl.schema.json; schema tests for the variant.

Unblocks the runtime-side evaluate loop consumed by @aaac/runtime.