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/components/workbench/ChoiceChips.tsx

@@ -0,0 +1,106 @@
+"use client";
+
+import { useId, useState, type KeyboardEvent } from "react";
+
+import { Button } from "@/components/ui/Button";
+import { TextInput } from "@/components/ui/TextInput";
+import type { ClarifyOptionVM } from "@/lib/workbench/clarify";
+
+interface ChoiceChipsProps {
+  // 反问的澄清问题。
+  question: string;
+  // 2–4 个具体选项；为空时只渲染自由输入。
+  options: ClarifyOptionVM[];
+  // 是否提供常驻自由输入兜底。
+  allowFreeText: boolean;
+  // 点选某选项：回传其 value（供上层折进 instruction）。
+  onPick: (value: string) => void;
+  // 提交自由输入文本（allowFreeText 且提供此回调时可用）。
+  onFreeText?: (text: string) => void;
+}
+
+// AI 反问澄清的选项芯片组（WFW-9 M1）：渲染一个问题 + 一组选项芯片（复用 Button），
+// 作者点选一项即高亮并回传 value；可选自由输入兜底。纯展示、无副作用、无 API 调用。
+export function ChoiceChips({
+  question,
+  options,
+  allowFreeText,
+  onPick,
+  onFreeText,
+}: ChoiceChipsProps) {
+  const [picked, setPicked] = useState<string | null>(null);
+  const [freeText, setFreeText] = useState("");
+  const inputId = useId();
+  const hasOptions = options.length > 0;
+  const canSubmit = Boolean(onFreeText) && freeText.trim().length > 0;
+
+  const handlePick = (value: string): void => {
+    setPicked(value);
+    onPick(value);
+  };
+
+  const handleFreeSubmit = (): void => {
+    const trimmed = freeText.trim();
+    if (!trimmed || !onFreeText) return;
+    onFreeText(trimmed);
+    setFreeText("");
+  };
+
+  const handleKeyDown = (event: KeyboardEvent<HTMLInputElement>): void => {
+    if (event.key !== "Enter") return;
+    event.preventDefault();
+    handleFreeSubmit();
+  };
+
+  return (
+    <div className="space-y-2">
+      <p className="text-sm text-ink">{question}</p>
+
+      {hasOptions ? (
+        <div className="flex flex-wrap gap-2" role="group" aria-label="澄清选项">
+          {options.map((option, index) => {
+            const active = option.value === picked;
+            return (
+              <Button
+                key={`${index}-${option.value}`}
+                type="button"
+                aria-pressed={active}
+                onClick={() => handlePick(option.value)}
+                variant={active ? "outline" : "secondary"}
+                size="sm"
+              >
+                {option.label}
+              </Button>
+            );
+          })}
+        </div>
+      ) : null}
+
+      {allowFreeText ? (
+        <div className="flex items-center gap-2">
+          <label htmlFor={inputId} className="sr-only">
+            自由回答
+          </label>
+          <TextInput
+            id={inputId}
+            value={freeText}
+            onChange={(event) => setFreeText(event.target.value)}
+            onKeyDown={handleKeyDown}
+            controlSize="sm"
+            placeholder="或直接说你的想法…"
+            className="flex-1"
+          />
+          <Button
+            type="button"
+            onClick={handleFreeSubmit}
+            disabled={!canSubmit}
+            variant="secondary"
+            size="sm"
+          >
+            提交
+          </Button>
+        </div>
+      ) : null}
+    </div>
+  );
+}

apps/web/components/workbench/RefinePanel.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useEffect, useRef, useState } from "react";
-import { Check, MessageSquarePlus, RotateCcw, X } from "lucide-react";
+import { Check, MessageSquarePlus, MessagesSquare, RotateCcw, X } from "lucide-react";
 
 import { ThinkingIndicator } from "@/components/ThinkingIndicator";
 import { Button } from "@/components/ui/Button";
@@ -9,6 +9,12 @@ import { SectionHeader } from "@/components/ui/SectionHeader";
 import { StatusNote } from "@/components/ui/StatusNote";
 import { TextArea } from "@/components/ui/TextArea";
 import { useRefine } from "@/lib/workbench/useRefine";
+import { useClarify } from "@/lib/workbench/useClarify";
+import { foldClarifications, needsClarifyGate } from "@/lib/workbench/clarify";
+import { ChoiceChips } from "./ChoiceChips";
+
+// 门控阈值：再沟通意见 trim 后短于此字数才自动预检反问（清晰意见不交往返税）。
+const CLARIFY_MIN_CHARS = 10;
 
 interface RefinePanelProps {
   projectId: string;
@@ -30,7 +36,9 @@ export function RefinePanel({
   onClose,
 }: RefinePanelProps) {
   const { status, versions, latest, refine, recommunicate } = useRefine();
+  const clarify = useClarify();
   const [instruction, setInstruction] = useState("");
+  const [pendingInstruction, setPendingInstruction] = useState<string | null>(null);
   const ranRef = useRef(false);
 
   // 打开即对选段回炉一次（仅一次，避免重复请求）。
@@ -41,12 +49,38 @@ export function RefinePanel({
   }, [projectId, chapterNo, original, refine]);
 
   const busy = status === "refining";
+  const clarifying = clarify.status === "checking";
+  const firstQuestion = clarify.decision?.questions[0] ?? null;
+  const asking = clarify.status === "asking" && firstQuestion !== null;
 
-  const onRecommunicate = (): void => {
+  // 折入澄清答案（或原意见）后回炉，并清理澄清态。
-    const trimmed = instruction.trim();
+  const runRecommunicate = (finalInstruction: string): void => {
-    if (!trimmed || busy) return;
+    clarify.reset();
+    setPendingInstruction(null);
     setInstruction("");
-    void recommunicate(projectId, chapterNo, trimmed);
+    void recommunicate(projectId, chapterNo, finalInstruction);
+  };
+
+  // 「再改一版」：意见含糊/极短（或 force）先预检反问；否则直接回炉。
+  const onRecommunicate = async (force: boolean): Promise<void> => {
+    const trimmed = instruction.trim();
+    if (!trimmed || busy || clarifying) return;
+    if (force || needsClarifyGate(trimmed, CLARIFY_MIN_CHARS)) {
+      const segment = latest?.refined ?? original;
+      const vm = await clarify.check(projectId, chapterNo, segment, trimmed);
+      if (vm.needClarification && vm.questions.length > 0) {
+        setPendingInstruction(trimmed); // 记住原意见，等作者答完折进去
+        return;
+      }
+    }
+    runRecommunicate(trimmed);
+  };
+
+  // 作者答复澄清（点选 value 或自由输入）→ 折进意见 → 回炉。
+  const onClarifyAnswer = (answer: string): void => {
+    const question = clarify.decision?.questions[0]?.question ?? "";
+    const base = pendingInstruction ?? instruction.trim();
+    runRecommunicate(foldClarifications(base, [{ question, answer }]));
   };
 
   return (
@@ -101,19 +135,41 @@ export function RefinePanel({
             value={instruction}
             onChange={(e) => setInstruction(e.target.value)}
             rows={2}
-            placeholder="再沟通：想怎么改？（如「再收紧节奏」「保留这句比喻」）"
+            placeholder="再沟通：想怎么改？（意见太笼统时 AI 会先反问、给方向选项）"
           />
         </label>
+        {asking && firstQuestion ? (
+          <div className="rounded border border-cinnabar/40 bg-bg p-3">
+            <p className="mb-2 text-2xs text-ink-soft">AI 想先跟你确认一下：</p>
+            <ChoiceChips
+              question={firstQuestion.question}
+              options={firstQuestion.options}
+              allowFreeText={firstQuestion.allowFreeText}
+              onPick={onClarifyAnswer}
+              onFreeText={onClarifyAnswer}
+            />
+          </div>
+        ) : null}
         <div className="flex flex-wrap items-center gap-2">
           <Button
-            onClick={onRecommunicate}
+            onClick={() => void onRecommunicate(false)}
-            disabled={busy || instruction.trim().length === 0}
+            disabled={busy || clarifying || instruction.trim().length === 0}
             variant="secondary"
             size="sm"
           >
             <MessageSquarePlus className="h-4 w-4" aria-hidden="true" />
             再改一版
           </Button>
+          <Button
+            onClick={() => void onRecommunicate(true)}
+            disabled={busy || clarifying || instruction.trim().length === 0}
+            variant="ghost"
+            size="sm"
+            title="让 AI 先反问、给方向选项再改"
+          >
+            <MessagesSquare className="h-4 w-4" aria-hidden="true" />
+            帮我理清方向
+          </Button>
           <Button
             onClick={() => latest && onAccept(latest.refined)}
             disabled={busy || !latest}
@@ -123,8 +179,11 @@ export function RefinePanel({
             <Check className="h-4 w-4" aria-hidden="true" />
             接受回填
           </Button>
-          {busy ? (
+          {busy || clarifying ? (
-            <ThinkingIndicator label="生成中" className="text-xs text-cinnabar" />
+            <ThinkingIndicator
+              label={clarifying ? "琢磨要不要反问" : "生成中"}
+              className="text-xs text-cinnabar"
+            />
           ) : null}
         </div>
       </div>

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

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+// @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

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+"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 };
+}