{
  "schema_version": 1,
  "diagram_type": "sequence",
  "meta": {
    "title": "Rubric Rumble: reuse the low-level tournament engine",
    "quality_profile": "showcase",
    "animation": "none",
    "column_fit": "spread",
    "viewBox": [
      1000,
      538
    ]
  },
  "participants": [
    {
      "id": "rr-core-api-caller",
      "type": "frontend",
      "label": "Python caller"
    },
    {
      "id": "rr-core-api-seed",
      "type": "backend",
      "label": "Seed ordering"
    },
    {
      "id": "rr-core-api-core",
      "type": "backend",
      "label": "run_tournament"
    },
    {
      "id": "rr-core-api-cache",
      "type": "database",
      "label": "Caller text cache"
    },
    {
      "id": "rr-core-api-evaluate",
      "type": "backend",
      "label": "Evaluate callback"
    },
    {
      "id": "rr-core-api-judge",
      "type": "backend",
      "label": "Judge callback"
    }
  ],
  "messages": [
    {
      "id": "rr-10-core-api-1",
      "from": "rr-core-api-caller",
      "to": "rr-core-api-core",
      "label": "ModelRefs, artifacts and two injected callbacks",
      "y": 160
    },
    {
      "id": "rr-10-core-api-2",
      "from": "rr-core-api-core",
      "to": "rr-core-api-seed",
      "label": "Optional prior ranking; exclude supplied judge model",
      "y": 189
    },
    {
      "id": "rr-10-core-api-3",
      "from": "rr-core-api-seed",
      "to": "rr-core-api-core",
      "label": "Known-ranked, new, then previously disqualified",
      "y": 218,
      "variant": "return"
    },
    {
      "id": "rr-10-core-api-4",
      "from": "rr-core-api-core",
      "to": "rr-core-api-cache",
      "label": "Hash prompt ID + model + full artifact identity",
      "y": 247
    },
    {
      "id": "rr-10-core-api-5",
      "from": "rr-core-api-cache",
      "to": "rr-core-api-core",
      "label": "Cached text, when supplied and present",
      "y": 276,
      "variant": "return"
    },
    {
      "id": "rr-10-core-api-6",
      "from": "rr-core-api-core",
      "to": "rr-core-api-evaluate",
      "label": "Cache miss: model + one artifact",
      "y": 305
    },
    {
      "id": "rr-10-core-api-7",
      "from": "rr-core-api-evaluate",
      "to": "rr-core-api-core",
      "label": "Nonempty answer text; exceptions disqualify",
      "y": 334,
      "variant": "return"
    },
    {
      "id": "rr-10-core-api-8",
      "from": "rr-core-api-core",
      "to": "rr-core-api-cache",
      "label": "Store successful text; finish candidate views",
      "y": 363
    },
    {
      "id": "rr-10-core-api-9",
      "from": "rr-core-api-core",
      "to": "rr-core-api-judge",
      "label": "Insertion: candidate A and incumbent B views",
      "y": 392
    },
    {
      "id": "rr-10-core-api-10",
      "from": "rr-core-api-judge",
      "to": "rr-core-api-core",
      "label": "JudgeDecision with a supported winner",
      "y": 421,
      "variant": "return"
    },
    {
      "id": "rr-10-core-api-11",
      "from": "rr-core-api-core",
      "to": "rr-core-api-caller",
      "label": "TournamentResult: ranking, battles and counts",
      "y": 450,
      "variant": "return"
    }
  ],
  "cards": [
    {
      "dot": "cyan",
      "title": "The core is a library boundary",
      "items": [
        "It does not configure providers, price usage, build a task rubric, save captured outputs to files, or render reports. The complete workflow supplies those services."
      ]
    },
    {
      "dot": "amber",
      "title": "Caller-owned features stay explicit",
      "items": [
        "A caller may supply prior ranking, reusable cache, judge-model exclusion, or price metadata used only for new-candidate seeding. The complete workflow supplies a fresh cache and no prior ranking or price seed."
      ]
    }
  ]
}