agent

      # and the assert below only proves non-emptiness. The goal rides in.
      goal: ${{ inputs.goal }}
      steps: ${{ tasks.plan.output.steps }}
    agent:
      # Describe the job in the prompt; declare its result shape in schema:.
      # The granted nika:done sentinel is required to finish this loop.
      # Text-only plans receive feedback within the turn/token budgets.
      # The engine validates the final result and can request a schema
      # repair within its configured retry allowance and task budgets.
      # A valid result shape does not prove the promised work was performed;