system

      # either engine, hand-instructing "reply with the object, then call
      # nika:done" only makes that miss more likely (measured twice on that
      # exact instruction). Let the engine own the shape.
      system: "You are a careful analyst. Work the plan step by step and report what you actually found."   # SLOT
      prompt: |
        Goal · ${{ with.goal }}
        Plan · ${{ with.steps }}
      tools:                        # SLOT: the MINIMUM grant for the job
        # Pure compute — this pair needs no filesystem, so the skeleton runs
        # anywhere. Granting the agent a tool here is only HALF a grant: every