feat(frontend): 五类交互接入 AI 对话留痕 + Workbench 抽屉入口（AC-3）

- RefinePanel/ChapterRewritePanel：结束后 append [author(意见/答复), ai(产出)]；
  clarify buffer-until-concluded——澄清 Q&A（原意见→反问→答复）缓冲，随最终产出批
  一起落库同 thread；纯放弃不记。refine ai 行 meta 存 version_no+原选段（每版重锚）。
- ContinuePanel：ai-only（续写无作者输入），每候选一条 ai 气泡 meta{candidate_index}。
- GeneratorRunner：成功后 append [author(字段摘要, meta{tool_key,input_fields}),
  ai(渲染预览, meta{tool_key,output_kind})]；空产物不记。lib/toolbox/aiSummary.ts 纯助手+单测。
- InlineToolbox→GeneratorRunner 透传 append+本章号；ToolboxPage 用 silent 直投项目级(chapter_no=null)。
- Workbench：挂 useAiConversation 单实例 + AiConversationDrawer + 底栏「AI 对话」入口（flag 灰度），
  三个 DRAFT-only 再接受回调（替换整章/插入正文/回填选段），成功关抽屉+toast、漂移不盲替换。

apps/web/components/toolbox/GeneratorRunner.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useCallback, useMemo, useState } from "react";
+import { useCallback, useMemo, useRef, useState } from "react";
 import { ArrowLeft, Database, Sparkles } from "lucide-react";
 
 import { useToast } from "@/components/Toast";
@@ -23,8 +23,10 @@ import {
   type PreviewItem,
 } from "@/lib/toolbox/toolbox";
 import { ingestTable, isSingleObjectIngest } from "@/lib/toolbox/ingest";
+import { fieldSummary, renderPreviewText } from "@/lib/toolbox/aiSummary";
 import { buildManuscriptExcerpt } from "@/lib/workbench/manuscriptExcerpt";
 import { useGenerator } from "@/lib/toolbox/useGenerator";
+import type { AiTurnInput } from "@/lib/workbench/useAiConversation";
 import { TemplateFiller } from "./TemplateFiller";
 
 interface GeneratorRunnerProps {
@@ -36,6 +38,10 @@ interface GeneratorRunnerProps {
   // 可选：作者【已写正文】。传入且当前工具有 brief 字段时，表单里出现「用当前正文」按钮，
   // 点击把正文摘录填进 brief，让内容感知型生成器（如书名）据正文反推。工具箱页不传 → 不显示。
   manuscriptText?: string;
+  // 可选留痕：生成成功后 append 一批 [author(字段摘要), ai(预览文本)]。
+  // 内联工具箱传 conversation.appendMessages + 当前章号；工具箱页传 silent 直投 + chapterNo=null。
+  appendMessages?: (turn: AiTurnInput) => void;
+  logChapterNo?: number | null;
 }
 
 // 声明驱动的通用生成器（核心）：按 descriptor.input_fields 渲染表单 → 调通用 generate →
@@ -47,6 +53,8 @@ export function GeneratorRunner({
   onClose,
   onInsertText,
   manuscriptText,
+  appendMessages,
+  logChapterNo,
 }: GeneratorRunnerProps) {
   const gen = useGenerator();
   const toast = useToast();
@@ -55,6 +63,8 @@ export function GeneratorRunner({
   );
   // 入库勾选：预览行下标集合（与 gen.rawPreview 行对齐）。
   const [selected, setSelected] = useState<Set<number>>(new Set());
+  // 本 runner 一次会话 = 一个 thread；多次生成归此组。
+  const threadId = useRef(crypto.randomUUID()).current;
 
   const setField = useCallback((name: string, value: string): void => {
     setValues((prev) => ({ ...prev, [name]: value }));
@@ -99,8 +109,36 @@ export function GeneratorRunner({
       return;
     }
     setSelected(new Set());
-    await gen.generate(projectId, tool.key, buildGenerateRequest(values));
-  }, [gen, projectId, tool, values, toast]);
+    const artifact = await gen.generate(
+      projectId,
+      tool.key,
+      buildGenerateRequest(values),
+    );
+    // 留痕（成功且有可读预览时）：author(字段摘要) + ai(渲染预览)；空产物/错误路径不记。
+    if (artifact && appendMessages) {
+      const aiText = renderPreviewText(artifact.preview);
+      if (aiText.length > 0) {
+        appendMessages({
+          threadId,
+          kind: "generator",
+          toolKey: tool.key,
+          chapterNo: logChapterNo ?? null,
+          messages: [
+            {
+              role: "author",
+              content: fieldSummary(tool.input_fields ?? [], values) || tool.title,
+              meta: { tool_key: tool.key, input_fields: values },
+            },
+            {
+              role: "ai",
+              content: aiText,
+              meta: { tool_key: tool.key, output_kind: artifact.outputKind },
+            },
+          ],
+        });
+      }
+    }
+  }, [gen, projectId, tool, values, toast, appendMessages, logChapterNo, threadId]);
 
   const rows = useMemo(
     () => previewRows(gen.rawPreview),

apps/web/components/toolbox/ToolboxPage.tsx

@@ -9,6 +9,7 @@ import { EmptyState } from "@/components/ui/EmptyState";
 import { PageHeader } from "@/components/ui/PageHeader";
 import type { ProjectResponse, ToolDescriptorView } from "@/lib/api/types";
 import { isLegacyTool, resolveLegacyRoute } from "@/lib/toolbox/toolbox";
+import { useAiConversation } from "@/lib/workbench/useAiConversation";
 import { ToolCard } from "./ToolCard";
 import { GeneratorRunner } from "./GeneratorRunner";
 
@@ -27,6 +28,8 @@ export function ToolboxPage({
   initialOpenKey,
 }: ToolboxPageProps) {
   const router = useRouter();
+  // 工具箱页无抽屉：silent 直投——项目级(chapter_no=null)留痕，不 GET、失败不 toast。
+  const conversation = useAiConversation(project.id, 0, { silent: true });
 
   const findOpenable = useCallback(
     (key: string | undefined): ToolDescriptorView | null => {
@@ -76,6 +79,8 @@ export function ToolboxPage({
           <GeneratorRunner
             projectId={project.id}
             tool={active}
+            appendMessages={conversation.appendMessages}
+            logChapterNo={null}
             onClose={() => setActive(null)}
           />
         ) : sorted.length === 0 ? (