feat(frontend): 润色再沟通接入 AI 反问澄清——选项芯片 + 折答案回炉（WFW-9 M1）

RefinePanel「再沟通」升级为对话式：意见含糊/极短(门控 <10 字，或点「帮我理清方向」)时先调
clarify 预检端点让 AI 反问，渲染 ChoiceChips 选项芯片(+自由输入兜底)；作者选/答后
foldClarifications 把答案折进 instruction，再走既有 refine 回炉(零迁移)。清晰意见直接回炉、
不交往返税；预检失败=放行(useClarify 视 error/异常为 needClarification=false，不阻塞润色)。
新增：lib/workbench/clarify.ts(VM 类型+foldClarifications+needsClarifyGate 纯逻辑) +
useClarify(SSE 外调映射 snake→VM) + ChoiceChips.tsx；gen:api 重生成客户端。
门禁绿：tsc/lint/vitest 654(+clarify/useClarify 18 例)/build/coverage 95.36%。

apps/web/lib/api/schema.d.ts

@@ -429,6 +429,33 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/projects/{project_id}/chapters/{chapter_no}/refine/clarify": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /**
+         * Clarify Refine
+         * @description 润色预检澄清（WFW-9 M1 路线A 两阶段之「问题」阶段）：非流式 JSON，只判不改。
+         *
+         *     独立于既有 refine 端点——只判「作者这条再沟通意见清不清楚」，含糊则反问 1 问 + 给选项，
+         *     清楚则给确认语放行；**绝不改正文**（正文仍走 refine 端点）。analyst 档（不变量 #2）。
+         *
+         *     项目不存在 → 404；无凭据 → 503（dep 解析阶段拦下）。**只读不写库**（不变量 #3）；
+         *     末尾 `commit()` 让网关 usage_ledger 落库（add-only，否则记账静默丢失，同 refine 纪律）。
+         *     判别/校验失败在 `run_clarify` 内确定性回退 `need_clarification=false`（不阻塞润色）。
+         */
+        post: operations["clarify_refine_projects__project_id__chapters__chapter_no__refine_clarify_post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/templates": {
         parameters: {
             query?: never;
@@ -1109,6 +1136,81 @@ export interface components {
             /** Note */
             note?: string | null;
         };
+        /**
+         * ClarifyDecision
+         * @description 润色预检澄清决策（结构化 LLM 输出 + API 响应）。
+         *
+         *     路线A 两阶段之「问题」阶段：仅判定「要不要反问」并给选项，**不改正文**（正文仍走
+         *     既有 refine 端点）。纯只读（`clarify_refine_spec.writes=()`，不变量 #3）。
+         *
+         *     **全字段给默认值守解析韧性**（仿 `StyleDriftReview` 降级范式）：LLM 漏产/畸形时
+         *     降级为 `need_clarification=false`（不问、直接放行 refine），绝不阻塞润色主链路。
+         *
+         *     - `need_clarification=false` → `questions` 为空、可给一句 `verification` 确认语；
+         *     - `need_clarification=true` → `questions` 恰 1 问（v1 硬上限）、`verification` 可空。
+         */
+        ClarifyDecision: {
+            /**
+             * Need Clarification
+             * @description 是否需要向作者反问澄清（含糊/多走法→true；明确→false）
+             * @default false
+             */
+            need_clarification: boolean;
+            /**
+             * Questions
+             * @description 反问清单（need_clarification=false 时为空；v1 硬上限 1 问）
+             */
+            questions?: components["schemas"]["ClarifyQuestion"][];
+            /**
+             * Verification
+             * @description 明确时的一句『我这样理解对吗』确认语（need_clarification=false 时给，可空）
+             */
+            verification?: string | null;
+        };
+        /**
+         * ClarifyOption
+         * @description 单个澄清选项：展示文案 + 选中回填值（锚定本段/本章的一种具体走法）。
+         *
+         *     `value` = 作者选中后折进 refine instruction 字符串的内容（零迁移，不落库）。
+         *     凑不出具体可区分选项时退化为空 options（`ClarifyQuestion.options=[]`），突出自由输入。
+         */
+        ClarifyOption: {
+            /**
+             * Label
+             * @description 展示文案（作者看到的选项标签）
+             */
+            label: string;
+            /**
+             * Value
+             * @description 选中后回填/折进 instruction 的具体走法内容
+             */
+            value: string;
+        };
+        /**
+         * ClarifyQuestion
+         * @description 单条澄清反问：问题 + 2–4 个锚定选项 + 自由输入兜底。
+         *
+         *     `options` 常规 2–4 个（锚定本段/本章的具体走法）；凑不出具体可区分选项时留空列表，
+         *     退化为纯自由输入。`allow_free_text` 常驻 True——自由输入永远兜底（作者可不选任一项）。
+         */
+        ClarifyQuestion: {
+            /**
+             * Question
+             * @description 反问的澄清问题（一句话，指向本段的分歧点）
+             */
+            question: string;
+            /**
+             * Options
+             * @description 2–4 个锚定本段/本章的具体走法选项；凑不出具体选项时为空列表
+             */
+            options?: components["schemas"]["ClarifyOption"][];
+            /**
+             * Allow Free Text
+             * @description 是否允许自由输入（常驻兜底）
+             * @default true
+             */
+            allow_free_text: boolean;
+        };
         /**
          * ConflictDecision
          * @description 对最近一次审稿留痕里**某个冲突**（按其在 conflicts 列表的下标定位）的裁决。
@@ -1780,6 +1882,23 @@ export interface components {
             /** Tier Routing */
             tier_routing?: components["schemas"]["TierRoutingInput"][];
         };
+        /**
+         * RefineClarifyRequest
+         * @description 润色预检澄清：选段 + 再沟通意见（WFW-9 M1 路线A 两阶段之「问题」阶段）。
+         *
+         *     与 `RefineRequest` 独立——预检只判「意见清不清楚」，不改正文。`instruction` 为作者的
+         *     再沟通意见（可空/极短，正是触发反问的场景）；带长度上界防超长入参。响应=`ClarifyDecision`
+         *     （在 ww_agents，端点直接返回，供前端 gen:api 生成强类型客户端）。
+         */
+        RefineClarifyRequest: {
+            /** Segment */
+            segment: string;
+            /**
+             * Instruction
+             * @default
+             */
+            instruction: string;
+        };
         /**
          * RefineRequest
          * @description 回炉：重写选中段（可选改写指令）。
@@ -3310,6 +3429,60 @@ export interface operations {
             };
         };
     };
+    clarify_refine_projects__project_id__chapters__chapter_no__refine_clarify_post: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                project_id: string;
+                chapter_no: number;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["RefineClarifyRequest"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ClarifyDecision"];
+                };
+            };
+            /** @description 项目不存在 */
+            404: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ErrorEnvelope"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+            /** @description LLM 不可用 */
+            503: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ErrorEnvelope"];
+                };
+            };
+        };
+    };
     list_templates_templates_get: {
         parameters: {
             query?: never;

apps/web/lib/workbench/clarify.test.ts

@@ -0,0 +1,90 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  foldClarifications,
+  needsClarifyGate,
+  type ClarifyAnswer,
+} from "./clarify";
+
+describe("foldClarifications", () => {
+  it("原意见在前，每条澄清另起一行并保序", () => {
+    const answers: ClarifyAnswer[] = [
+      { question: "这段谁在说话？", answer: "主角内心独白" },
+      { question: "结尾要留钩子吗？", answer: "留一个悬念" },
+    ];
+
+    const result = foldClarifications("收紧节奏", answers);
+
+    expect(result).toBe(
+      "收紧节奏\n已澄清：这段谁在说话？ → 主角内心独白\n已澄清：结尾要留钩子吗？ → 留一个悬念",
+    );
+  });
+
+  it("无回答时原样返回去空白后的 instruction", () => {
+    expect(foldClarifications("  收紧节奏  ", [])).toBe("收紧节奏");
+  });
+
+  it("instruction 为空时只输出澄清行", () => {
+    const answers: ClarifyAnswer[] = [
+      { question: "谁在说话？", answer: "配角旁白" },
+    ];
+    expect(foldClarifications("   ", answers)).toBe("已澄清：谁在说话？ → 配角旁白");
+  });
+
+  it("跳过空/纯空白回答的条目", () => {
+    const answers: ClarifyAnswer[] = [
+      { question: "Q1", answer: "  " },
+      { question: "Q2", answer: "有效回答" },
+    ];
+    expect(foldClarifications("原意见", answers)).toBe(
+      "原意见\n已澄清：Q2 → 有效回答",
+    );
+  });
+
+  it("问题为空（自由输入）时省略问题只留答案", () => {
+    const answers: ClarifyAnswer[] = [{ question: "  ", answer: "就按我说的改" }];
+    expect(foldClarifications("原意见", answers)).toBe(
+      "原意见\n已澄清：就按我说的改",
+    );
+  });
+
+  it("去除问题与答案两端空白", () => {
+    const answers: ClarifyAnswer[] = [
+      { question: "  谁在说话？  ", answer: "  主角  " },
+    ];
+    expect(foldClarifications("x", answers)).toBe("x\n已澄清：谁在说话？ → 主角");
+  });
+
+  it("不可变：不修改入参数组", () => {
+    const answers: ClarifyAnswer[] = [{ question: "Q", answer: "A" }];
+    const snapshot = JSON.parse(JSON.stringify(answers));
+    foldClarifications("原意见", answers);
+    expect(answers).toEqual(snapshot);
+  });
+
+  it("全部为空回答且 instruction 为空时返回空串", () => {
+    expect(foldClarifications("", [{ question: "Q", answer: "" }])).toBe("");
+  });
+});
+
+describe("needsClarifyGate", () => {
+  it("去空白后长度小于 minChars 时需要预检", () => {
+    expect(needsClarifyGate("改一下", 8)).toBe(true);
+  });
+
+  it("恰好等于 minChars 时不需预检（边界）", () => {
+    expect(needsClarifyGate("12345678", 8)).toBe(false);
+  });
+
+  it("超过 minChars 时不需预检", () => {
+    expect(needsClarifyGate("这是一段足够清晰具体的润色意见", 8)).toBe(false);
+  });
+
+  it("纯空白按空计（长度 0 < minChars）需预检", () => {
+    expect(needsClarifyGate("      ", 8)).toBe(true);
+  });
+
+  it("先去两端空白再计长度", () => {
+    expect(needsClarifyGate("  改  ", 2)).toBe(true);
+  });
+});

apps/web/lib/workbench/clarify.ts

@@ -0,0 +1,64 @@
+// AI 反问澄清（纯逻辑 + 前端 view-model 类型；WFW-9 M1，路线A 两阶段）。
+// 「润色/再沟通」意见不清晰时，先走独立非流式 JSON 预检端点让 AI 反问给选项，
+// 作者点选/自由输入后，把答案「折进」既有 refine 的 instruction 字符串（零迁移、不动 refine 端点）。
+// 这里只放确定性纯函数 + 本地 VM 类型（camelCase）；与后端 snake_case ClarifyDecision 的映射由主线接线时完成。
+
+// 澄清选项（锚定本段/本章的一种具体走法）。
+export interface ClarifyOptionVM {
+  label: string;
+  value: string;
+}
+
+// 一个澄清问题：反问 + 2–4 个具体选项（可为空退化为纯自由输入）+ 常驻自由输入兜底。
+export interface ClarifyQuestionVM {
+  question: string;
+  options: ClarifyOptionVM[];
+  allowFreeText: boolean;
+}
+
+// 一回合预检结论（对应后端 ClarifyDecision）。
+export interface ClarifyDecisionVM {
+  needClarification: boolean;
+  // v1 硬上限 1 问；needClarification=false 时为空。
+  questions: ClarifyQuestionVM[];
+  // needClarification=false 时给一句「我这样理解对吗」确认语，可空。
+  verification?: string;
+}
+
+// 作者对某个澄清问题的回答（点选回填 value 或自由输入文本）。
+export interface ClarifyAnswer {
+  question: string;
+  answer: string;
+}
+
+const CLARIFY_PREFIX = "已澄清：";
+const CLARIFY_ARROW = " → ";
+const LINE_SEPARATOR = "\n";
+
+// 把作者对各澄清问题的回答逐条折进 instruction（原意见在前，每条澄清另起一行），供既有 refine 端点直接使用。
+// 纯函数、确定性、不可变：不改动入参；跳过空回答；保留传入顺序。
+export function foldClarifications(
+  instruction: string,
+  answers: readonly ClarifyAnswer[],
+): string {
+  const lines = answers
+    .map((entry) => ({
+      question: entry.question.trim(),
+      answer: entry.answer.trim(),
+    }))
+    .filter((entry) => entry.answer.length > 0)
+    .map((entry) =>
+      entry.question
+        ? `${CLARIFY_PREFIX}${entry.question}${CLARIFY_ARROW}${entry.answer}`
+        : `${CLARIFY_PREFIX}${entry.answer}`,
+    );
+
+  const trimmedInstruction = instruction.trim();
+  const parts = trimmedInstruction ? [trimmedInstruction, ...lines] : lines;
+  return parts.join(LINE_SEPARATOR);
+}
+
+// 门控：instruction 去空白后长度不足 minChars（意见太空/太短）才需要预检反问；清晰意见直接走 refine 不发问。
+export function needsClarifyGate(instruction: string, minChars: number): boolean {
+  return instruction.trim().length < minChars;
+}

apps/web/lib/workbench/useClarify.test.ts

@@ -0,0 +1,115 @@
+// @vitest-environment jsdom
+import { act, renderHook } from "@testing-library/react";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+import { useClarify } from "./useClarify";
+import type { ClarifyDecisionVM } from "./clarify";
+
+const post = vi.fn();
+vi.mock("@/lib/api/client", () => ({
+  api: { POST: (...a: unknown[]) => post(...a) },
+}));
+
+const CLARIFY_PATH = "/projects/{project_id}/chapters/{chapter_no}/refine/clarify";
+
+describe("useClarify", () => {
+  beforeEach(() => post.mockReset());
+  afterEach(() => vi.clearAllMocks());
+
+  it("初始 idle、无决策", () => {
+    const { result } = renderHook(() => useClarify());
+    expect(result.current.status).toBe("idle");
+    expect(result.current.decision).toBeNull();
+  });
+
+  it("need_clarification=true：映射 snake→VM，status=asking，返回 VM", async () => {
+    post.mockResolvedValue({
+      data: {
+        need_clarification: true,
+        questions: [
+          {
+            question: "想更冷峻还是更抒情？",
+            options: [
+              { label: "冷峻", value: "改得更冷峻克制" },
+              { label: "抒情", value: "改得更抒情" },
+            ],
+            allow_free_text: true,
+          },
+        ],
+        verification: null,
+      },
+      error: null,
+    });
+
+    const { result } = renderHook(() => useClarify());
+    let vm: ClarifyDecisionVM | undefined;
+    await act(async () => {
+      vm = await result.current.check("p1", 3, "这段", "改改");
+    });
+
+    expect(post).toHaveBeenCalledWith(CLARIFY_PATH, {
+      params: { path: { project_id: "p1", chapter_no: 3 } },
+      body: { segment: "这段", instruction: "改改" },
+    });
+    expect(vm).toEqual({
+      needClarification: true,
+      questions: [
+        {
+          question: "想更冷峻还是更抒情？",
+          options: [
+            { label: "冷峻", value: "改得更冷峻克制" },
+            { label: "抒情", value: "改得更抒情" },
+          ],
+          allowFreeText: true,
+        },
+      ],
+      verification: undefined,
+    });
+    expect(result.current.status).toBe("asking");
+    expect(result.current.decision?.needClarification).toBe(true);
+  });
+
+  it("need_clarification=false：status=proceed，decision 清空", async () => {
+    post.mockResolvedValue({
+      data: { need_clarification: false, questions: [], verification: "我按你说的收紧节奏" },
+      error: null,
+    });
+    const { result } = renderHook(() => useClarify());
+    let vm: ClarifyDecisionVM | undefined;
+    await act(async () => {
+      vm = await result.current.check("p1", 1, "段", "再收紧节奏，删掉第二段闪回");
+    });
+    expect(vm?.needClarification).toBe(false);
+    expect(result.current.status).toBe("proceed");
+    expect(result.current.decision).toBeNull();
+  });
+
+  it("后端 error：视为放行（proceed，needClarification=false）", async () => {
+    post.mockResolvedValue({ data: null, error: { detail: "boom" } });
+    const { result } = renderHook(() => useClarify());
+    let vm: ClarifyDecisionVM | undefined;
+    await act(async () => {
+      vm = await result.current.check("p1", 1, "段", "改");
+    });
+    expect(vm?.needClarification).toBe(false);
+    expect(result.current.status).toBe("proceed");
+  });
+
+  // 注：hook 的 try/catch 对「fetch 抛异常」的放行分支与上面「后端 error 信封」放行分支同构、
+  // 行为一致（均 status=proceed、needClarification=false）；此处不单测 throw 路径，
+  // 因 mockRejected + React act 冲刷会触发 vitest 未处理拒绝误报（与被测逻辑无关）。
+
+  it("reset 清回 idle", async () => {
+    post.mockResolvedValue({
+      data: { need_clarification: true, questions: [{ question: "q", options: [], allow_free_text: true }] },
+      error: null,
+    });
+    const { result } = renderHook(() => useClarify());
+    await act(async () => {
+      await result.current.check("p1", 1, "段", "改");
+    });
+    act(() => result.current.reset());
+    expect(result.current.status).toBe("idle");
+    expect(result.current.decision).toBeNull();
+  });
+});

apps/web/lib/workbench/useClarify.ts

@@ -0,0 +1,97 @@
+"use client";
+
+import { useCallback, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import type { ClarifyDecisionVM } from "./clarify";
+
+// 澄清预检结论为「放行」（直接去 refine，不反问）——后端 error/前端异常时的确定性回退。
+const PROCEED: ClarifyDecisionVM = { needClarification: false, questions: [] };
+
+export type ClarifyStatus = "idle" | "checking" | "asking" | "proceed" | "error";
+
+export interface UseClarify {
+  status: ClarifyStatus;
+  // status=asking 时的待答问题（含选项）；其它时为 null。
+  decision: ClarifyDecisionVM | null;
+  // 预检：调 refine/clarify 端点，返回 VM 供调用方同步分支。失败=放行（needClarification=false），不阻塞润色。
+  check: (
+    projectId: string,
+    chapterNo: number,
+    segment: string,
+    instruction: string,
+  ) => Promise<ClarifyDecisionVM>;
+  reset: () => void;
+}
+
+// 后端 snake_case ClarifyDecision → 前端 camelCase VM（不信任外部数据，全部显式取值 + 默认）。
+function toVM(data: {
+  need_clarification?: boolean;
+  questions?: {
+    question?: string;
+    options?: { label?: string; value?: string }[];
+    allow_free_text?: boolean;
+  }[];
+  verification?: string | null;
+}): ClarifyDecisionVM {
+  return {
+    needClarification: Boolean(data.need_clarification),
+    questions: (data.questions ?? []).map((q) => ({
+      question: q.question ?? "",
+      options: (q.options ?? []).map((o) => ({
+        label: o.label ?? "",
+        value: o.value ?? "",
+      })),
+      allowFreeText: Boolean(q.allow_free_text),
+    })),
+    verification: data.verification ?? undefined,
+  };
+}
+
+// AI 反问澄清预检（WFW-9 M1，路线A 两阶段之「问题」阶段）。
+// 「再沟通」意见含糊/极短时先调独立非流式端点让 AI 反问；needClarification=false 或失败=放行去既有 refine。
+export function useClarify(): UseClarify {
+  const [status, setStatus] = useState<ClarifyStatus>("idle");
+  const [decision, setDecision] = useState<ClarifyDecisionVM | null>(null);
+
+  const check = useCallback<UseClarify["check"]>(
+    async (projectId, chapterNo, segment, instruction) => {
+      setStatus("checking");
+      try {
+        const { data, error } = await api.POST(
+          "/projects/{project_id}/chapters/{chapter_no}/refine/clarify",
+          {
+            params: { path: { project_id: projectId, chapter_no: chapterNo } },
+            body: { segment, instruction },
+          },
+        );
+        if (error || !data) {
+          setStatus("proceed");
+          setDecision(null);
+          return PROCEED;
+        }
+        const vm = toVM(data);
+        if (vm.needClarification && vm.questions.length > 0) {
+          setStatus("asking");
+          setDecision(vm);
+        } else {
+          setStatus("proceed");
+          setDecision(null);
+        }
+        return vm;
+      } catch {
+        setStatus("proceed");
+        setDecision(null);
+        return PROCEED;
+      }
+    },
+    [],
+  );
+
+  const reset = useCallback((): void => {
+    setStatus("idle");
+    setDecision(null);
+  }, []);
+
+  return { status, decision, check, reset };
+}