import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { join } from "node:path";
import { test } from "node:test";
import { stepList, type ResearchConfig } from "../src/config/index.ts";
import type { AppendKind, Content, LedgerRecord } from "../src/ledger/index.ts";
import {
  Board,
  forwardNotRunEvent,
  type StudyRecord,
} from "../src/materials/index.ts";
import { runBalance } from "../src/rules/index.ts";
import { definition, exited } from "./ledger-helpers.ts";
import { judged } from "./materials-helpers.ts";
import { nextStep } from "../src/flow/next-step.ts";
import type { Json, Submission, SubmissionKind } from "../src/vocab/index.ts";
import { fullConfig } from "./config-helpers.ts";

// flow 的"下一步做什么"（任务书 12 第六部分）：纯函数，手写账本记录，看它给出的下一步。
// 其余都由真实运行证明（任务书 12 第五部分），这里不写假模型、假 Docker。

const TASK_FACTS = JSON.parse(
  readFileSync(
    join(import.meta.dirname, "..", "tasks", "circle_packing", "task.json"),
    "utf8",
  ),
) as Json;
const HASH = "0".repeat(64);
const measured = (value: number) => ({ status: "measured", value }) as const;

/** 调用结束记录去掉调用编号（四种结局各自去掉）。 */
type Ended =
  Content<"callEnded"> extends infer E
    ? E extends unknown
      ? Omit<E, "call">
      : never
    : never;

/** 一本手写的账本：按写入先后编序号。内容照账本的形状写，nextStep 不再检查。 */
class Book {
  readonly records: LedgerRecord[] = [];

  add<K extends AppendKind>(kind: K, content: Content<K>): this {
    this.records.push({
      seq: this.records.length + 1,
      kind,
      hash: HASH,
      content,
    } as LedgerRecord);
    return this;
  }

  config(config: ResearchConfig): this {
    const record: StudyRecord = {
      config: config as unknown as Json,
      steps: stepList(config) as unknown as Json,
      prompts: {
        roles: {} as StudyRecord["prompts"]["roles"],
        tasks: {} as StudyRecord["prompts"]["tasks"],
      },
      image: `sha256:${HASH}`,
      task: TASK_FACTS,
      seed: 1,
    };
    return this.add("config", record as unknown as Json);
  }

  baselineCode(): this {
    return this.add("code", {
      object: "base",
      version: "v-base",
      locations: null,
    });
  }

  /** 一次基线运行：没启动，或启动了、判分算数或不算数。 */
  baselineRun(run: string, outcome: "notStarted" | "valid" | "invalid"): this {
    const definition: Content<"runPlanned">["definition"] = {
      command: ["python", "harness.py"],
      workdir: "/work",
      image: { digest: `sha256:${HASH}`, runtime: "runc" },
      wallSeconds: 120,
      cores: 1,
      inheritEnv: false,
      env: {},
    };
    this.add("runPlanned", {
      run,
      purpose: "baseline",
      round: 0,
      object: null,
      definition,
    });
    if (outcome === "notStarted") {
      return this.add("runResult", {
        run,
        process: { ending: "notStarted", reason: "docker run 失败" },
        judged: null,
      });
    }
    this.add("runStarted", { run });
    const process = {
      ending: "exited",
      exitCode: 0,
      cpuSeconds: measured(10),
      wallSeconds: measured(10),
      peakMemoryBytes: measured(1),
    } as const;
    const judged = {
      verdict: outcome,
      verdictReason: outcome === "valid" ? "合法" : "不合法：圆重叠",
      score: measured(0.9597642169962064),
      metrics: {},
      answerPath: { status: "unmeasured", reason: "基线不写" },
      safeguardTriggers: { status: "unmeasured", reason: "基线不写" },
      extra: null,
    } as unknown as Content<"runResult">["judged"];
    return this.add("runResult", { run, process, judged });
  }

  open(
    stageId: string,
    stage: Content<"stageOpen">["stage"],
    round: number,
    roster: string[],
  ): this {
    return this.add("stageOpen", { stageId, stage, round, roster });
  }

  /** 一份被收下的提交。nextStep 只看这个人在这个阶段有没有被收下的提交，种类一律写成入口。 */
  entry(stageId: string, author: string): this {
    const content = {
      entries: [
        { name: "入口一", body: "从这里开始看" },
        { name: "入口二", body: "从那里开始看" },
      ],
    };
    return this.add("submission", {
      stageId,
      author,
      target: null,
      item: null,
      version: 1,
      kind: "entry",
      content,
      jev: null,
    });
  }

  /** 一份被收下的提交，内容 nextStep 不读。 */
  sub(
    stageId: string,
    author: string,
    kind: SubmissionKind,
    target: string | null,
    item: string | null,
  ): this {
    return this.add("submission", {
      stageId,
      author,
      target,
      item,
      version: 1,
      kind,
      content: {},
      jev: null,
    } as unknown as Content<"submission">);
  }

  /** 一次模型调用：开始和结束。"模型调用开始"里的材料只写 nextStep 认任务用的种类和对象。 */
  call(
    stageId: string,
    actor: string,
    kind: SubmissionKind,
    object: string | null,
    n: number,
    ended: Ended,
  ): this {
    const call = `${stageId}.${actor}.${kind}.${object ?? "none"}.${n}`;
    this.add("callStarted", {
      call,
      actor,
      stageId,
      model: "iomgaa/glm-5.3",
      materials: { kind, object },
    });
    return this.add("callEnded", { call, ...ended } as Content<"callEnded">);
  }
}

const R = ["researcher-1", "researcher-2", "researcher-3"];
const entryTasks = (actors: string[]) =>
  actors.map((actor) => ({ actor, kind: "entry", object: null }));

/** 冻结了配置、基线跑完算数的账本。 */
function afterBaseline(config: ResearchConfig = fullConfig()): Book {
  return new Book()
    .config(config)
    .baselineCode()
    .baselineRun("base-1", "valid");
}

test("空账本：冻结配置", () => {
  assert.deepEqual(nextStep([]), { do: "freezeConfig" });
});

test("有配置、没有基线：先存基线代码，再用 base-1 跑基线", () => {
  const book = new Book().config(fullConfig());
  assert.deepEqual(nextStep(book.records), { do: "saveBaseline" });
  book.baselineCode();
  assert.deepEqual(nextStep(book.records), {
    do: "baselineRun",
    run: "base-1",
  });
});

test('基线最近一次是"没启动"：起新编号再跑', () => {
  const book = new Book()
    .config(fullConfig())
    .baselineCode()
    .baselineRun("base-1", "notStarted");
  assert.deepEqual(nextStep(book.records), {
    do: "baselineRun",
    run: "base-2",
  });
  book.baselineRun("base-2", "notStarted");
  assert.deepEqual(nextStep(book.records), {
    do: "baselineRun",
    run: "base-3",
  });
});

test("基线判为不算数：停下，原因写明", () => {
  const book = new Book()
    .config(fullConfig())
    .baselineCode()
    .baselineRun("base-1", "invalid");
  const next = nextStep(book.records);
  assert.equal(next.do, "halt");
  assert.match(
    (next as { reason: string }).reason,
    /base-1 判为不算数（不合法：圆重叠）/,
  );
});

test("基线算数之后：开写入口阶段，名单是全部研究者", () => {
  assert.deepEqual(nextStep(afterBaseline().records), {
    do: "openStage",
    stageId: "r0-entryDraft",
    stage: "entryDraft",
    round: 0,
    roster: R,
  });
});

test("阶段开着、一人已交、两人没交：派那两人", () => {
  const book = afterBaseline()
    .open("r0-entryDraft", "entryDraft", 0, R)
    .entry("r0-entryDraft", "researcher-1");
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r0-entryDraft",
    tasks: entryTasks(["researcher-2", "researcher-3"]),
  });
});

test("都交了：关阶段；关了以后开第 1 次讨论", () => {
  const book = afterBaseline().open("r0-entryDraft", "entryDraft", 0, R);
  for (const r of R) book.entry("r0-entryDraft", r);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r0-entryDraft",
  });
  book.add("stageClose", { stageId: "r0-entryDraft" });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r0-discussion1",
    stage: "discussion",
    round: 0,
    roster: R,
  });
});

test('有人最近一次是"没交"：开发入口关着先派能派的、再停下；开着重新派', () => {
  const stuck = (devEntry: boolean) =>
    new Book()
      .config({ ...fullConfig(), devEntry })
      .baselineCode()
      .baselineRun("base-1", "valid")
      .open("r0-entryDraft", "entryDraft", 0, R)
      .entry("r0-entryDraft", "researcher-1")
      .call("r0-entryDraft", "researcher-2", "entry", null, 1, {
        wallSeconds: measured(30),
        status: "notSubmitted",
        reason: "模型结束了回复，没有一份提交被收下",
      });
  // researcher-3 还没派过，先派他。
  assert.deepEqual(nextStep(stuck(false).records), {
    do: "dispatch",
    stageId: "r0-entryDraft",
    tasks: entryTasks(["researcher-3"]),
  });
  // researcher-3 交上以后只剩"没交"的 researcher-2：停下，附调用编号。
  const closed = stuck(false).entry("r0-entryDraft", "researcher-3");
  const next = nextStep(closed.records);
  assert.equal(next.do, "halt");
  assert.match((next as { reason: string }).reason, /^交不出合格提交/);
  assert.deepEqual((next as { objects: string[] }).objects, [
    "r0-entryDraft.researcher-2.entry.none.1",
  ]);
  // 开发入口开着：重新派。
  const dev = stuck(true).entry("r0-entryDraft", "researcher-3");
  assert.deepEqual(nextStep(dev.records), {
    do: "dispatch",
    stageId: "r0-entryDraft",
    tasks: entryTasks(["researcher-2"]),
  });
});

test('有人最近一次是"出错"或"进程中断"：重新派；只看最近一次调用', () => {
  const book = afterBaseline()
    .open("r0-entryDraft", "entryDraft", 0, R)
    .entry("r0-entryDraft", "researcher-1")
    .call("r0-entryDraft", "researcher-2", "entry", null, 1, {
      wallSeconds: measured(5),
      status: "notSubmitted",
      reason: "没交",
    })
    .call("r0-entryDraft", "researcher-2", "entry", null, 2, {
      wallSeconds: measured(5),
      status: "failed",
      reason: "模型服务报错",
    })
    .call("r0-entryDraft", "researcher-3", "entry", null, 1, {
      wallSeconds: { status: "unmeasured", reason: "进程中断" },
      status: "failed",
      reason: "进程中断",
    });
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r0-entryDraft",
    tasks: entryTasks(["researcher-2", "researcher-3"]),
  });
});

test("只有一位研究者：两次讨论各写一条按配置跳过，接着开认领", () => {
  const one = fullConfig();
  one.models.researchers = [one.models.researchers[0]!];
  const book = afterBaseline(one)
    .open("r0-entryDraft", "entryDraft", 0, ["researcher-1"])
    .entry("r0-entryDraft", "researcher-1");
  book.add("stageClose", { stageId: "r0-entryDraft" });
  const reason = "只有一位研究者，第零轮不讨论（方法.md 4.2）";
  assert.deepEqual(nextStep(book.records), {
    do: "skip",
    step: "discussion1",
    reason,
  });
  book.add("event", {
    event: "skippedByConfig",
    reason,
    objects: ["discussion1"],
  });
  assert.deepEqual(nextStep(book.records), {
    do: "skip",
    step: "discussion2",
    reason,
  });
  book.add("event", {
    event: "skippedByConfig",
    reason,
    objects: ["discussion2"],
  });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r0-claim",
    stage: "claim",
    round: 0,
    roster: ["researcher-1"],
  });
});

/** 第零轮做完：四个阶段都交齐关闭，分配决定已写。 */
function afterRoundZero(config: ResearchConfig): Book {
  const book = afterBaseline(config);
  const stages = [
    ["r0-entryDraft", "entryDraft"],
    ["r0-discussion1", "discussion"],
    ["r0-discussion2", "discussion"],
    ["r0-claim", "claim"],
  ] as const;
  for (const [stageId, stage] of stages) {
    book.open(stageId, stage, 0, R);
    for (const r of R) book.entry(stageId, r);
    book.add("stageClose", { stageId });
  }
  return book;
}

/** 分配决定。 */
function assigned(book: Book): Book {
  const output = R.map((researcher, i) => ({
    researcher,
    entry: `e-${researcher}-1`,
    rank: i + 1,
  }));
  return book.add("decision", {
    decision: "entries",
    round: 0,
    rule: "assignEntries",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output,
  });
}

test("认领关了：分配；分配做完：开第 1 轮的提案阶段，名单是全部研究者", () => {
  const book = afterRoundZero(fullConfig());
  assert.deepEqual(nextStep(book.records), { do: "assignEntries" });
  assigned(book);
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-proposal",
    stage: "proposal",
    round: 1,
    roster: R,
  });
});

// ---------------------------------------------------------------------------
// 第 1 轮：开轮到选批（任务书 14 第 2.2、2.3 节）
// 三条原提案：researcher-1 的单独成候选 r1-c1；researcher-2、researcher-3 的判为同一个改法，合成 r1-c2。
// ---------------------------------------------------------------------------

const P1 = "r1-researcher-1-1";
const P2 = "r1-researcher-2-1";
const P3 = "r1-researcher-3-1";
const C = ["r1-c1", "r1-c2"];

/** 一个研究者阶段：开、每个任务交一份、关。tasks 是 [作者, 种类, 对象, 编号]。 */
function stage(
  book: Book,
  stageId: string,
  kind: Content<"stageOpen">["stage"],
  tasks: Array<[string, SubmissionKind, string | null, string | null]>,
): Book {
  book.open(stageId, kind, 1, R);
  for (const [author, k, target, item] of tasks)
    book.sub(stageId, author, k, target, item);
  return book.add("stageClose", { stageId });
}

/** 每人 × 每个对象的任务。 */
const each = (kind: SubmissionKind, objects: string[]) =>
  R.flatMap((actor) => objects.map((object) => ({ actor, kind, object })));

/** 第 1 轮写到 last 这一步做完为止。 */
function roundOne(
  last:
    | "proposal"
    | "dedupe"
    | "firstPrediction"
    | "critique"
    | "response"
    | "freezeProtocol"
    | "secondPrediction"
    | "selectBatch",
): Book {
  const book = assigned(afterRoundZero(fullConfig()));
  const order = [
    "proposal",
    "dedupe",
    "firstPrediction",
    "critique",
    "response",
    "freezeProtocol",
    "secondPrediction",
    "selectBatch",
  ];
  const steps: Record<string, () => void> = {
    proposal: () =>
      stage(book, "r1-proposal", "proposal", [
        ["researcher-1", "proposal", null, P1],
        ["researcher-2", "proposal", null, P2],
        ["researcher-3", "proposal", null, P3],
      ]),
    dedupe: () => {
      const output = {
        fresh: [
          { candidate: "r1-c1", proposals: [P1] },
          { candidate: "r1-c2", proposals: [P2, P3] },
        ],
        carried: [],
      };
      book.add("decision", {
        decision: "dedup",
        round: 1,
        rule: "jevSameChange",
        ruleVersion: 1,
        params: null,
        seed: null,
        input: null,
        output,
      });
    },
    firstPrediction: () =>
      stage(
        book,
        "r1-firstPrediction",
        "firstPrediction",
        R.flatMap((a) =>
          C.map(
            (c) =>
              [a, "firstPrediction", c, null] as [
                string,
                SubmissionKind,
                string,
                null,
              ],
          ),
        ),
      ),
    critique: () =>
      stage(book, "r1-critique", "critique", [
        ["researcher-1", "critique", P2, `${P2}.researcher-1.1`],
        ["researcher-1", "critique", P3, `${P3}.researcher-1.1`],
        ["researcher-2", "critique", P1, `${P1}.researcher-2.1`],
        ["researcher-2", "critique", P3, `${P3}.researcher-2.1`],
        ["researcher-3", "critique", P1, `${P1}.researcher-3.1`],
        ["researcher-3", "critique", P2, `${P2}.researcher-3.1`],
      ]),
    response: () =>
      stage(book, "r1-response", "response", [
        ["researcher-1", "response", "r1-c1", null],
        ["researcher-2", "unification", "r1-c2", null],
      ]),
    freezeProtocol: () => {
      // r1-c1 一个因子（采纳它不做消融），r1-c2 两个因子（采纳它走 ⑬–⑰）。
      book.add("protocol", {
        candidate: "r1-c1",
        protocol: { round: 1, baseline: "base", proposals: [], factors: [{}] },
      });
      book.add("protocol", {
        candidate: "r1-c2",
        protocol: {
          round: 1,
          baseline: "base",
          proposals: [],
          factors: [{}, {}],
        },
      });
    },
    secondPrediction: () =>
      stage(
        book,
        "r1-secondPrediction",
        "secondPrediction",
        R.flatMap((a) =>
          C.map(
            (c) =>
              [a, "secondPrediction", c, null] as [
                string,
                SubmissionKind,
                string,
                null,
              ],
          ),
        ),
      ),
    selectBatch: () =>
      book.add("decision", {
        decision: "batch",
        round: 1,
        rule: "bestExpected",
        ruleVersion: 1,
        params: null,
        seed: "s",
        input: null,
        output: { chosen: ["r1-c1"] },
      }),
  };
  for (const step of order.slice(0, order.indexOf(last) + 1)) steps[step]!();
  return book;
}

test("提案阶段一人交了两条、两人没交：只派没交的两人，提案没有对象", () => {
  const book = assigned(afterRoundZero(fullConfig()))
    .open("r1-proposal", "proposal", 1, R)
    .sub("r1-proposal", "researcher-1", "proposal", null, P1);
  book.sub(
    "r1-proposal",
    "researcher-1",
    "proposal",
    null,
    "r1-researcher-1-2",
  );
  const tasks = ["researcher-2", "researcher-3"].map((actor) => ({
    actor,
    kind: "proposal",
    object: null,
  }));
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-proposal",
    tasks,
  });
});

test("提案交齐关闭后：判重合并", () => {
  assert.deepEqual(nextStep(roundOne("proposal").records), {
    do: "dedupe",
    round: 1,
  });
});

test("判重做完：开第一次预测；任务是每人 × 每个新候选（含自己的），同一个人的按候选编号排", () => {
  const book = roundOne("dedupe");
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-firstPrediction",
    stage: "firstPrediction",
    round: 1,
    roster: R,
  });
  book.open("r1-firstPrediction", "firstPrediction", 1, R);
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-firstPrediction",
    tasks: each("firstPrediction", C),
  });
});

test("同一个人的任务按对象分开算：对 r1-c1 没交的停住，r1-c2 照派；能派的派完才停下", () => {
  const notSubmitted = {
    wallSeconds: measured(30),
    status: "notSubmitted",
    reason: "模型结束了回复，没有一份提交被收下",
  } as const;
  const book = roundOne("dedupe").open(
    "r1-firstPrediction",
    "firstPrediction",
    1,
    R,
  );
  for (const a of ["researcher-1", "researcher-3"])
    for (const c of C)
      book.sub("r1-firstPrediction", a, "firstPrediction", c, null);
  book.call(
    "r1-firstPrediction",
    "researcher-2",
    "firstPrediction",
    "r1-c1",
    1,
    notSubmitted,
  );
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-firstPrediction",
    tasks: [
      { actor: "researcher-2", kind: "firstPrediction", object: "r1-c2" },
    ],
  });
  book.sub(
    "r1-firstPrediction",
    "researcher-2",
    "firstPrediction",
    "r1-c2",
    null,
  );
  const next = nextStep(book.records);
  assert.equal(next.do, "halt");
  assert.deepEqual((next as { objects: string[] }).objects, [
    "r1-firstPrediction.researcher-2.firstPrediction.r1-c1.1",
  ]);
});

test("挑刺阶段：每人 × 每条不是自己写的原提案，没有挑自己的", () => {
  const book = roundOne("firstPrediction").open(
    "r1-critique",
    "critique",
    1,
    R,
  );
  const expected = [
    { actor: "researcher-1", kind: "critique", object: P2 },
    { actor: "researcher-1", kind: "critique", object: P3 },
    { actor: "researcher-2", kind: "critique", object: P1 },
    { actor: "researcher-2", kind: "critique", object: P3 },
    { actor: "researcher-3", kind: "critique", object: P1 },
    { actor: "researcher-3", kind: "critique", object: P2 },
  ];
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-critique",
    tasks: expected,
  });
});

test("回应阶段：单条原提案的候选派作者交回应，合并而成的派编号最小的作者交统一", () => {
  const book = roundOne("critique").open("r1-response", "response", 1, R);
  const expected = [
    { actor: "researcher-1", kind: "response", object: "r1-c1" },
    { actor: "researcher-2", kind: "unification", object: "r1-c2" },
  ];
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-response",
    tasks: expected,
  });
});

test("回应阶段关闭、还没有冻结协议：写冻结协议；写完开第二次预测，任务是每人 × 池里每个候选", () => {
  const book = roundOne("response");
  assert.deepEqual(nextStep(book.records), { do: "freezeProtocols", round: 1 });
  const frozen = roundOne("freezeProtocol");
  assert.deepEqual(nextStep(frozen.records), {
    do: "openStage",
    stageId: "r1-secondPrediction",
    stage: "secondPrediction",
    round: 1,
    roster: R,
  });
  frozen.open("r1-secondPrediction", "secondPrediction", 1, R);
  assert.deepEqual(nextStep(frozen.records), {
    do: "dispatch",
    stageId: "r1-secondPrediction",
    tasks: each("secondPrediction", C),
  });
});

test("第二次预测关闭：选批", () => {
  assert.deepEqual(nextStep(roundOne("secondPrediction").records), {
    do: "selectBatch",
    round: 1,
  });
});

test("选批做完：开实现阶段，每个入选候选固定一位实验员", () => {
  assert.deepEqual(nextStep(roundOne("selectBatch").records), {
    do: "openStage",
    stageId: "r1-implementation",
    stage: "implementation",
    round: 1,
    roster: ["experimenter-r1-c1"],
  });
});

test("关掉第一次预测：第 1 轮写一条按配置跳过（对象 r1-firstPrediction），接着开挑刺", () => {
  const config = fullConfig();
  if (config.flow.preset !== "full") throw new Error("测试配置应是完整流程");
  config.flow.firstPrediction = false;
  const book = assigned(afterRoundZero(config));
  stage(book, "r1-proposal", "proposal", [
    ["researcher-1", "proposal", null, P1],
    ["researcher-2", "proposal", null, P2],
    ["researcher-3", "proposal", null, P3],
  ]);
  const output = {
    fresh: [
      { candidate: "r1-c1", proposals: [P1] },
      { candidate: "r1-c2", proposals: [P2, P3] },
    ],
    carried: [],
  };
  book.add("decision", {
    decision: "dedup",
    round: 1,
    rule: "jevSameChange",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output,
  });
  const reason = "配置关掉了第一次预测";
  assert.deepEqual(nextStep(book.records), {
    do: "skip",
    step: "r1-firstPrediction",
    reason,
  });
  book.add("event", {
    event: "skippedByConfig",
    reason,
    objects: ["r1-firstPrediction"],
  });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-critique",
    stage: "critique",
    round: 1,
    roster: R,
  });
});

// ⑨–⑫：预期动作手写，不调模型、Jev 或 Docker。
const X = ["experimenter-r1-c1", "experimenter-r1-c2"];
const V = ["verifier-r1-c1", "verifier-r1-c2"];

function batchTwo(maxRepairs: number): Book {
  const book = roundOne("secondPrediction");
  const record = book.records.find((r) => r.kind === "config")!;
  (record.content as unknown as StudyRecord).config = {
    ...fullConfig(),
    maxRepairs,
  } as unknown as Json;
  return book.add("decision", {
    decision: "batch",
    round: 1,
    rule: "bestExpected",
    ruleVersion: 1,
    params: null,
    seed: "s",
    input: null,
    output: { chosen: C },
  });
}

function implemented(book: Book): Book {
  book.open("r1-implementation", "implementation", 1, X);
  for (const [i, candidate] of C.entries())
    book.sub("r1-implementation", X[i]!, "implementation", candidate, null);
  return book.add("stageClose", { stageId: "r1-implementation" });
}

function verified(
  book: Book,
  n: number,
  candidate: string,
  passed: boolean,
): Book {
  // 对应真实 15-tight-2 的 submissions created_seq=173（墙约束行和右端错位）、194（修复后通过）。
  // 只转录驱动程序所需的逐项 found，不伪造 Jev 的判断或模型运行。
  const content: Submission<"verification"> = {
    clauses: [
      {
        clause: "c1",
        found: passed,
        where: passed
          ? "initial.py 墙约束行和右端已对齐"
          : "initial.py:225-228 与 243-246：墙约束行和右端错位",
      },
    ],
    factors: [{ factor: "p1", found: passed, where: "LP 墙约束" }],
    safeguards: [],
    unassigned: [],
    body: passed ? "通过" : "解的不是协议写的线性规划",
  };
  return book.add("submission", {
    stageId: `r1-verification-${n}`,
    author: `verifier-${candidate}`,
    kind: "verification",
    target: candidate,
    item: null,
    version: 1,
    content,
    jev: null,
  });
}

function firstVerification(book: Book, a: boolean, b: boolean): Book {
  implemented(book).open("r1-verification-1", "verification", 1, V);
  verified(book, 1, C[0]!, a);
  verified(book, 1, C[1]!, b);
  return book.add("stageClose", { stageId: "r1-verification-1" });
}

function recordForward(
  book: Book,
  candidate: string,
  n: number,
  ending: "valid" | "notStarted" | "timeout",
): Book {
  const run = `r1-forward-${candidate}-${n}`;
  book.add("runPlanned", {
    run,
    purpose: "forward",
    round: 1,
    object: candidate,
    definition,
  });
  if (ending === "notStarted")
    return book.add("runResult", {
      run,
      process: { ending, reason: "Docker 未启动" },
      judged: null,
    });
  book.add("runStarted", { run });
  const process =
    ending === "timeout"
      ? {
          ending: "timeout" as const,
          wallSeconds: measured(120),
          cpuSeconds: measured(100),
          peakMemoryBytes: measured(1024),
        }
      : exited;
  return book.add("runResult", {
    run,
    process,
    judged: ending === "valid" ? judged(1.25, "main") : null,
  });
}

const forward = (candidate: string, n: number) => ({
  do: "forwardRun",
  round: 1,
  candidate,
  run: `r1-forward-${candidate}-${n}`,
});

test("实现的任务同时可派；已提交后中断不重派，等全体交齐关阶段后才核验", () => {
  const book = batchTwo(1).open("r1-implementation", "implementation", 1, X);
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-implementation",
    tasks: C.map((object, i) => ({
      actor: X[i],
      kind: "implementation",
      object,
    })),
  });
  book.sub("r1-implementation", X[0]!, "implementation", C[0]!, null);
  book.call("r1-implementation", X[0]!, "implementation", C[0]!, 1, {
    wallSeconds: { status: "unmeasured", reason: "进程中断" },
    status: "failed",
    reason: "进程中断",
  });
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-implementation",
    tasks: [{ actor: X[1], kind: "implementation", object: C[1] }],
  });
  book.sub("r1-implementation", X[1]!, "implementation", C[1]!, null);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r1-implementation",
  });
  book.add("stageClose", { stageId: "r1-implementation" });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-verification-1",
    stage: "verification",
    round: 1,
    roster: V,
  });
});

test("15-tight-2 的一次修复路径：核验关后才派原实验员，修复关后只重验修过的候选", () => {
  const book = implemented(batchTwo(1)).open(
    "r1-verification-1",
    "verification",
    1,
    V,
  );
  verified(book, 1, C[0]!, false);
  verified(book, 1, C[1]!, true);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r1-verification-1",
  });
  book.add("stageClose", { stageId: "r1-verification-1" });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-repair-1",
    stage: "implementation",
    round: 1,
    roster: [X[0]],
  });
  book.open("r1-repair-1", "implementation", 1, [X[0]!]);
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-repair-1",
    tasks: [{ actor: X[0], kind: "repair", object: C[0] }],
  });
  book.sub("r1-repair-1", X[0]!, "repair", C[0]!, null);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r1-repair-1",
  });
  book.add("stageClose", { stageId: "r1-repair-1" });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-verification-2",
    stage: "verification",
    round: 1,
    roster: [V[0]],
  });
  book.open("r1-verification-2", "verification", 1, [V[0]!]);
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-verification-2",
    tasks: [{ actor: V[0], kind: "verification", object: C[0] }],
  });
  verified(book, 2, C[0]!, true);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r1-verification-2",
  });
  book.add("stageClose", { stageId: "r1-verification-2" });
  assert.deepEqual(nextStep(book.records), forward(C[0]!, 1));
});

test("修复次数从关闭的阶段数出：两次修复后仍失败，逐候选写不跑事件，不占预算", () => {
  const book = firstVerification(batchTwo(2), false, false);
  for (let n = 1; n <= 2; n++) {
    assert.deepEqual(nextStep(book.records), {
      do: "openStage",
      stageId: `r1-repair-${n}`,
      stage: "implementation",
      round: 1,
      roster: X,
    });
    book.open(`r1-repair-${n}`, "implementation", 1, X);
    for (const [i, candidate] of C.entries())
      book.sub(`r1-repair-${n}`, X[i]!, "repair", candidate, null);
    book.add("stageClose", { stageId: `r1-repair-${n}` });
    assert.deepEqual(nextStep(book.records), {
      do: "openStage",
      stageId: `r1-verification-${n + 1}`,
      stage: "verification",
      round: 1,
      roster: V,
    });
    book.open(`r1-verification-${n + 1}`, "verification", 1, V);
    for (const candidate of C) verified(book, n + 1, candidate, false);
    book.add("stageClose", { stageId: `r1-verification-${n + 1}` });
  }
  for (const candidate of C) {
    const next = nextStep(book.records);
    assert.equal(next.do, "forwardNotRun");
    if (next.do !== "forwardNotRun") throw new Error("应写不跑事件");
    assert.equal(next.candidate, candidate);
    assert.match(next.reason, /第 3 次核验仍不通过，修复次数上限 2 已用完/);
    assert.match(next.reason, /解的不是协议写的线性规划/);
    book.add("event", forwardNotRunEvent(candidate, next.reason));
  }
  assert.deepEqual(runBalance(13, new Board(book.records).runStates()), {
    charged: 1,
    reserved: 0,
    balance: 12,
  });
  assert.deepEqual(nextStep(book.records), { do: "adopt", round: 1 });
});

test("maxRepairs=0：第一次核验失败就记不跑，另一候选仍可串行运行", () => {
  const book = firstVerification(batchTwo(0), false, true);
  const next = nextStep(book.records);
  assert.equal(next.do, "forwardNotRun");
  if (next.do !== "forwardNotRun") throw new Error("应写不跑事件");
  book.add("event", forwardNotRunEvent(next.candidate, next.reason));
  assert.deepEqual(nextStep(book.records), forward(C[1]!, 1));
});

test("正向串行：上次未启动起新编号；已登记未结束必须先恢复；超时也扣次且不重跑；采纳前不公开", () => {
  const book = firstVerification(batchTwo(1), true, true);
  assert.deepEqual(nextStep(book.records), forward(C[0]!, 1));
  recordForward(book, C[0]!, 1, "notStarted");
  assert.deepEqual(nextStep(book.records), forward(C[0]!, 2));
  assert.deepEqual(runBalance(13, new Board(book.records).runStates()), {
    charged: 1,
    reserved: 0,
    balance: 12,
  });
  const run = `r1-forward-${C[0]}-2`;
  book.add("runPlanned", {
    run,
    purpose: "forward",
    round: 1,
    object: C[0]!,
    definition,
  });
  assert.throws(
    () => nextStep(book.records),
    /登记了还没有结果：恢复入口应当已经核对过/,
  );
  assert.deepEqual(runBalance(13, new Board(book.records).runStates()), {
    charged: 1,
    reserved: 1,
    balance: 11,
  });
  book.add("runStarted", { run });
  assert.throws(() => nextStep(book.records), /登记了还没有结果/);
  book.add("runResult", { run, process: exited, judged: judged(1.25, "main") });
  assert.deepEqual(nextStep(book.records), forward(C[1]!, 1));
  recordForward(book, C[1]!, 1, "timeout");
  assert.deepEqual(nextStep(book.records), { do: "adopt", round: 1 });
  assert.deepEqual(runBalance(13, new Board(book.records).runStates()), {
    charged: 3,
    reserved: 0,
    balance: 10,
  });
  const before = new Board(book.records);
  assert.ok(
    before
      .runs()
      .filter((r) => r.plan.purpose === "forward")
      .every((r) => !before.runPublic(r)),
  );
  book.add("decision", {
    decision: "adopt",
    round: 1,
    rule: "adopt",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: { adopted: null },
  });
  const after = new Board(book.records);
  assert.ok(
    after
      .runs()
      .filter((r) => r.plan.purpose === "forward")
      .every((r) => after.runPublic(r)),
  );
  // 没有采纳：不开解释阶段，直接开收尾（方法.md 4.3 ⑫）。
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-wrapUp",
    stage: "wrapUp",
    round: 1,
    roster: R,
  });
});

test("采纳只有一个因子的候选：不做消融，直接开收尾（方法.md 4.3 ⑫）", () => {
  const book = firstVerification(batchTwo(1), true, true);
  for (const c of C) recordForward(book, c, 1, "valid");
  book.add("decision", {
    decision: "adopt",
    round: 1,
    rule: "adopt",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: { adopted: C[0]! },
  });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-wrapUp",
    stage: "wrapUp",
    round: 1,
    roster: R,
  });
});

// ---------------------------------------------------------------------------
// ⑬–⑱：消融到收尾、轮末解封、下一轮和研究结束（任务书 17 第 2.2、2.3 节）。预期动作手写，不调模型、Jev 或 Docker。
// ---------------------------------------------------------------------------

const ADOPTED = "r1-c2"; // 两个因子：p1、p2
const CELL1 = "r1-c2-p1";
const CELL2 = "r1-c2-p2";

/** 采纳了两个因子的 r1-c2。 */
function adoptedBook(): Book {
  const book = firstVerification(batchTwo(1), true, true);
  for (const c of C) recordForward(book, c, 1, "valid");
  return book.add("decision", {
    decision: "adopt",
    round: 1,
    rule: "adopt",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: { adopted: ADOPTED },
  });
}

/** 解释阶段：开、三人各交一份、关。 */
function explained(book: Book): Book {
  return stage(
    book,
    "r1-explanation",
    "explanation",
    R.map((a) => [a, "explanation", null, null]),
  );
}

/** 选格决定。 */
function cellsChosen(book: Book, chosen: string[]): Book {
  return book.add("decision", {
    decision: "cells",
    round: 1,
    rule: "valueMinusCost",
    ruleVersion: 1,
    params: null,
    seed: "s2",
    input: null,
    output: { chosen },
  });
}

/** 一次消融实现阶段：subs 是 [格, cannotRun, alsoOff]。 */
function implStage(
  book: Book,
  n: number,
  subs: Array<[string, string | null, string[]?]>,
): Book {
  const stageId = `r1-ablationImplementation-${n}`;
  book.open(
    stageId,
    "ablationImplementation",
    1,
    subs.map(([cell]) => `experimenter-${cell}`),
  );
  for (const [cell, cannotRun, alsoOff] of subs) {
    book.add("submission", {
      stageId,
      author: `experimenter-${cell}`,
      kind: "ablationImplementation",
      target: cell,
      item: null,
      version: 1,
      content: { alsoOff: alsoOff ?? [], cannotRun, concerns: "无" },
      jev: null,
    });
  }
  return book.add("stageClose", { stageId });
}

/** 一次消融核验阶段：subs 是 [格, [因子, 关没关]]。 */
function verStage(
  book: Book,
  n: number,
  subs: Array<[string, Array<[string, boolean]>]>,
): Book {
  const stageId = `r1-ablationVerification-${n}`;
  book.open(
    stageId,
    "ablationVerification",
    1,
    subs.map(([cell]) => `verifier-${cell}`),
  );
  for (const [cell, offs] of subs) {
    book.add("submission", {
      stageId,
      author: `verifier-${cell}`,
      kind: "ablationVerification",
      target: cell,
      item: null,
      version: 1,
      content: {
        factors: offs.map(([factor, off]) => ({
          factor,
          off,
          where: "initial.py:1",
        })),
      },
      jev: null,
    });
  }
  return book.add("stageClose", { stageId });
}

/** 一次消融运行：没启动，或启动了、判分算数。 */
function recordAblation(
  book: Book,
  cell: string,
  n: number,
  ending: "valid" | "notStarted",
): Book {
  const run = `r1-ablation-${cell}-${n}`;
  book.add("runPlanned", {
    run,
    purpose: "ablation",
    round: 1,
    object: cell,
    definition,
  });
  if (ending === "notStarted")
    return book.add("runResult", {
      run,
      process: { ending, reason: "Docker 未启动" },
      judged: null,
    });
  book.add("runStarted", { run });
  return book.add("runResult", {
    run,
    process: exited,
    judged: judged(1.2, "main"),
  });
}

test("采纳多因子改法：先开解释阶段，每人一个任务、没有对象；关闭后选格", () => {
  const book = adoptedBook();
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-explanation",
    stage: "explanation",
    round: 1,
    roster: R,
  });
  book.open("r1-explanation", "explanation", 1, R);
  assert.deepEqual(nextStep(book.records), {
    do: "dispatch",
    stageId: "r1-explanation",
    tasks: R.map((actor) => ({ actor, kind: "explanation", object: null })),
  });
  for (const a of R) book.sub("r1-explanation", a, "explanation", null, null);
  assert.deepEqual(nextStep(book.records), {
    do: "closeStage",
    stageId: "r1-explanation",
  });
  book.add("stageClose", { stageId: "r1-explanation" });
  assert.deepEqual(nextStep(book.records), { do: "selectCells", round: 1 });
});

test("选格做完：每格固定一位实验员；交了跑不起来的格不核验、不运行，没启动的下次起新编号", () => {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-ablationImplementation-1",
    stage: "ablationImplementation",
    round: 1,
    roster: [`experimenter-${CELL1}`, `experimenter-${CELL2}`],
  });
  implStage(book, 1, [
    [CELL1, null],
    [CELL2, "离了 p2 跑不起来"],
  ]);
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-ablationVerification-1",
    stage: "ablationVerification",
    round: 1,
    roster: [`verifier-${CELL1}`],
  });
  verStage(book, 1, [
    [
      CELL1,
      [
        ["p1", true],
        ["p2", false],
      ],
    ],
  ]);
  assert.deepEqual(nextStep(book.records), {
    do: "ablationRun",
    round: 1,
    cell: CELL1,
    run: `r1-ablation-${CELL1}-1`,
  });
  recordAblation(book, CELL1, 1, "notStarted");
  assert.deepEqual(nextStep(book.records), {
    do: "ablationRun",
    round: 1,
    cell: CELL1,
    run: `r1-ablation-${CELL1}-2`,
  });
  recordAblation(book, CELL1, 2, "valid");
  assert.deepEqual(nextStep(book.records), { do: "settle", round: 1 });
});

test("核验不通过：退回原实验员重做，只重验重做的格；次数用完写不跑事件，不登记运行", () => {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  implStage(book, 1, [
    [CELL1, null],
    [CELL2, null],
  ]);
  verStage(book, 1, [
    [
      CELL1,
      [
        ["p1", false],
        ["p2", false],
      ],
    ],
    [
      CELL2,
      [
        ["p1", false],
        ["p2", true],
      ],
    ],
  ]);
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-ablationImplementation-2",
    stage: "ablationImplementation",
    round: 1,
    roster: [`experimenter-${CELL1}`],
  });
  implStage(book, 2, [[CELL1, null]]);
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-ablationVerification-2",
    stage: "ablationVerification",
    round: 1,
    roster: [`verifier-${CELL1}`],
  });
  verStage(book, 2, [
    [
      CELL1,
      [
        ["p1", false],
        ["p2", false],
      ],
    ],
  ]);
  const next = nextStep(book.records);
  assert.equal(next.do, "cellNotRun");
  if (next.do !== "cellNotRun") throw new Error("应写不跑事件");
  assert.equal(next.cell, CELL1);
  assert.match(next.reason, /第 2 次核验仍不通过，修复次数上限 1 已用完/);
  book.add("event", {
    event: "cellNotRun",
    reason: next.reason,
    objects: [next.cell],
  });
  // p1 不跑不扣次；只跑 p2。
  assert.deepEqual(nextStep(book.records), {
    do: "ablationRun",
    round: 1,
    cell: CELL2,
    run: `r1-ablation-${CELL2}-1`,
  });
});

test("几格实际关掉的因子完全相同：沿用第一格，不重复跑", () => {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  implStage(book, 1, [
    [CELL1, null, ["p2"]],
    [CELL2, null, ["p1"]],
  ]);
  verStage(book, 1, [
    [
      CELL1,
      [
        ["p1", true],
        ["p2", true],
      ],
    ],
    [
      CELL2,
      [
        ["p1", true],
        ["p2", true],
      ],
    ],
  ]);
  // 两格实际关的都是 {p1, p2}：只跑第一格。
  assert.deepEqual(nextStep(book.records), {
    do: "ablationRun",
    round: 1,
    cell: CELL1,
    run: `r1-ablation-${CELL1}-1`,
  });
  recordAblation(book, CELL1, 1, "valid");
  assert.deepEqual(nextStep(book.records), { do: "settle", round: 1 });
});

test("全部交跑不起来：不核验、不运行，直接结算", () => {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  implStage(book, 1, [
    [CELL1, "跑不起来一"],
    [CELL2, "跑不起来二"],
  ]);
  assert.deepEqual(nextStep(book.records), { do: "settle", round: 1 });
});

/** 结算和押的因子写完、收尾关闭、解封也写完的账本（余额还有 8 次）。 */
function afterWrapUp(): Book {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  implStage(book, 1, [
    [CELL1, null],
    [CELL2, null],
  ]);
  verStage(book, 1, [
    [
      CELL1,
      [
        ["p1", true],
        ["p2", false],
      ],
    ],
    [
      CELL2,
      [
        ["p1", false],
        ["p2", true],
      ],
    ],
  ]);
  recordAblation(book, CELL1, 1, "valid");
  recordAblation(book, CELL2, 1, "valid");
  book.add("settlement", {
    round: 1,
    result: { candidate: ADOPTED, input: null, output: null },
  });
  book.add("decision", {
    decision: "bet",
    round: 1,
    rule: "chooseBet",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: null,
  });
  return stage(
    book,
    "r1-wrapUp",
    "wrapUp",
    R.map((a) => [a, "wrapUp", null, null]),
  );
}

test("结算和押的因子写完：开收尾；收尾关闭后解封本轮选中的全部候选，然后开下一轮", () => {
  const book = cellsChosen(explained(adoptedBook()), ["p1", "p2"]);
  implStage(book, 1, [
    [CELL1, null],
    [CELL2, null],
  ]);
  verStage(book, 1, [
    [
      CELL1,
      [
        ["p1", true],
        ["p2", false],
      ],
    ],
    [
      CELL2,
      [
        ["p1", false],
        ["p2", true],
      ],
    ],
  ]);
  recordAblation(book, CELL1, 1, "valid");
  assert.deepEqual(nextStep(book.records), {
    do: "ablationRun",
    round: 1,
    cell: CELL2,
    run: `r1-ablation-${CELL2}-1`,
  });
  recordAblation(book, CELL2, 1, "valid");
  assert.deepEqual(nextStep(book.records), { do: "settle", round: 1 });
  book.add("settlement", {
    round: 1,
    result: { candidate: ADOPTED, input: null, output: null },
  });
  book.add("decision", {
    decision: "bet",
    round: 1,
    rule: "chooseBet",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: null,
  });
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-wrapUp",
    stage: "wrapUp",
    round: 1,
    roster: R,
  });
  stage(
    book,
    "r1-wrapUp",
    "wrapUp",
    R.map((a) => [a, "wrapUp", null, null]),
  );
  // 收尾关闭后：解封本轮选批选中的 r1-c1、r1-c2；还有一个没解封就继续。
  assert.deepEqual(nextStep(book.records), { do: "unsealChosen", round: 1 });
  book.add("unseal", { candidate: "r1-c1", seals: [1] });
  assert.deepEqual(nextStep(book.records), { do: "unsealChosen", round: 1 });
  book.add("unseal", { candidate: "r1-c2", seals: [2] });
  // 余额还有（已扣 5 次）：开第 2 轮。
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r2-proposal",
    stage: "proposal",
    round: 2,
    roster: R,
  });
});

test("最后一次正向用掉全部余额：进行中的这一轮照常走完采纳与收尾，不开下一轮", () => {
  // 复现 full17-b 第 5 轮的缺陷：两个正向运行把余额用到 0 后，采纳决定、收尾和解封被整轮跳过，
  // 直接走到导出停下。余额为 0 只是不开【下一轮】（方法.md 第七部分“什么时候开下一轮”）。
  const book = firstVerification(batchTwo(1), true, true);
  for (const c of C) recordForward(book, c, 1, "valid");
  // 已扣 3 次（基线 1、正向 2）：把冻结配置的运行次数改成 3，余额为 0。
  const record = book.records.find((r) => r.kind === "config")!;
  const study = record.content as unknown as StudyRecord;
  study.config = { ...fullConfig(), runs: 3 } as unknown as Json;
  // 这一轮已经开始（r1- 的阶段都在账上）：下一步是写采纳决定，不是停下。
  assert.deepEqual(nextStep(book.records), { do: "adopt", round: 1 });
  book.add("decision", {
    decision: "adopt",
    round: 1,
    rule: "adopt",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: { adopted: null },
  });
  // 没有采纳：不做消融，照样开收尾阶段。
  assert.deepEqual(nextStep(book.records), {
    do: "openStage",
    stageId: "r1-wrapUp",
    stage: "wrapUp",
    round: 1,
    roster: R,
  });
});

test("余额为 0：不开下一轮，走到导出停下，原因写明", () => {
  const book = afterWrapUp();
  book.add("unseal", { candidate: "r1-c1", seals: [1] });
  book.add("unseal", { candidate: "r1-c2", seals: [2] });
  // 已扣 5 次（基线 1、正向 2、消融 2）：把冻结配置的运行次数改成 5，余额为 0。
  const record = book.records.find((r) => r.kind === "config")!;
  const study = record.content as unknown as StudyRecord;
  study.config = { ...fullConfig(), runs: 5 } as unknown as Json;
  assert.deepEqual(nextStep(book.records), {
    do: "halt",
    reason: "导出还没写",
    objects: [],
  });
});

test("配置关掉消融、又采纳了多因子改法：先记按配置跳过，再在解释停下", () => {
  const book = firstVerification(batchTwo(1), true, true);
  for (const c of C) recordForward(book, c, 1, "valid");
  book.add("decision", {
    decision: "adopt",
    round: 1,
    rule: "adopt",
    ruleVersion: 1,
    params: null,
    seed: null,
    input: null,
    output: { adopted: ADOPTED },
  });
  // 冻结的配置改为关掉消融：配置和步骤清单一起换（步骤清单在研究开始时冻结）。
  const config = fullConfig();
  if (config.flow.preset !== "full") throw new Error("测试配置应是完整流程");
  // 配置关掉消融时不写 cellRule（它只有开着消融才用得到）。
  config.flow.ablation = { enabled: false };
  const record = book.records.find((r) => r.kind === "config")!;
  const study = record.content as unknown as StudyRecord;
  study.config = config as unknown as Json;
  study.steps = stepList(config) as unknown as Json;
  const reason = "配置关掉了消融";
  assert.deepEqual(nextStep(book.records), {
    do: "skip",
    step: "r1-listCells",
    reason,
  });
  book.add("event", {
    event: "skippedByConfig",
    reason,
    objects: ["r1-listCells"],
  });
  const next = nextStep(book.records);
  assert.equal(next.do, "halt");
  assert.match((next as { reason: string }).reason, /不交三个数的解释还没写/);
});