{
  "grooph": 0,
  "id": "workshop-grind-loop",
  "name": "Workshop: grind loop",
  "version": 1,
  "goal": "Draw the next part on the parts list for the toy on sheet 1, in concepts/workshop/kit.js: 640 Gaussian splats in all, shared between the parts by surface area and spread evenly over each. Done when `node concepts/workshop/tools/measure.mjs` passes.",
  "target": {
    "harness": "claude-code"
  },
  "lineage": {
    "pattern": "grind-loop",
    "from": "grind-loop@1"
  },
  "description": "A builder changes the code and a check runs the tests. A failure goes back to the builder with the test output; a pass ends the run. The check is the bar, so there is no critic. The loop stops at its round cap or its time budget if the tests never pass.",
  "nodes": [
    {
      "id": "builder",
      "kind": "agent",
      "name": "Builder",
      "role": "builder",
      "model": {
        "tier": "fast"
      },
      "effort": "medium",
      "brief": "Make the task true by changing the code, adding tests where they are missing. Do not skip, weaken or delete a test to get a pass. On a later round, start from the failing output you are handed. Report what you changed and which tests now pass.",
      "inputs": [
        "the task",
        "failing test output (from round 1 on)"
      ],
      "outputs": [
        "the change",
        "CHANGES.md: what changed this round and why"
      ],
      "allow": [
        "read-files",
        "edit-files",
        "run-tests"
      ]
    },
    {
      "id": "tests",
      "kind": "check",
      "name": "Tests",
      "check": {
        "kind": "tests",
        "run": "node concepts/workshop/tools/measure.mjs",
        "pass": "exit code 0 and no test skipped"
      }
    },
    {
      "id": "done",
      "kind": "stop",
      "name": "Done",
      "outcome": "success"
    }
  ],
  "edges": [
    {
      "id": "e-builder-tests",
      "from": "builder",
      "to": "tests"
    },
    {
      "id": "e-tests-fail",
      "from": "tests",
      "to": "builder",
      "when": "fail",
      "evidence": [
        "test output"
      ]
    },
    {
      "id": "e-tests-pass",
      "from": "tests",
      "to": "done",
      "when": "pass"
    }
  ],
  "loops": [
    {
      "id": "grind",
      "name": "Grind",
      "members": [
        "builder",
        "tests"
      ],
      "back": [
        "e-tests-fail"
      ],
      "mode": "grind",
      "stops": [
        {
          "kind": "max-iterations",
          "n": 5
        },
        {
          "kind": "budget",
          "measure": "minutes",
          "limit": 30
        }
      ]
    }
  ]
}