Merge 4993f6e: multi-turn conversation system

src/api/generationRecordClient.ts

@@ -43,15 +43,40 @@ export interface SaveGenerationRecordResult {
 // 单个 poller 内也会重复触发。这里做客户端幂等：in-flight 合流 + 成功后短期拦截，
 // 避免后端在缺少去重时插入重复记录。
 const inFlightSaves = new Map<string, Promise<SaveGenerationRecordResult>>();
-const recentlySavedAt = new Map<string, number>();
+const recentlySavedRecords = new Map<string, { savedAt: number; signature: string }>();
 const SAVE_DEDUPE_WINDOW_MS = 60_000;
 
 function pruneRecentlySaved(now: number): void {
-  for (const [id, savedAt] of recentlySavedAt) {
-    if (now - savedAt > SAVE_DEDUPE_WINDOW_MS) recentlySavedAt.delete(id);
+  for (const [id, record] of recentlySavedRecords) {
+    if (now - record.savedAt > SAVE_DEDUPE_WINDOW_MS) recentlySavedRecords.delete(id);
   }
 }
 
+function stableJsonStringify(value: unknown): string {
+  if (value === null || typeof value !== "object") return JSON.stringify(value);
+  if (Array.isArray(value)) return `[${value.map(stableJsonStringify).join(",")}]`;
+  const entries = Object.entries(value as Record<string, unknown>)
+    .filter(([, entryValue]) => entryValue !== undefined)
+    .sort(([a], [b]) => a.localeCompare(b));
+  return `{${entries.map(([key, entryValue]) => `${JSON.stringify(key)}:${stableJsonStringify(entryValue)}`).join(",")}}`;
+}
+
+function buildSaveSignature(input: SaveGenerationRecordInput): string {
+  return stableJsonStringify({
+    tool: input.tool,
+    mode: input.mode,
+    title: input.title,
+    status: input.status,
+    prompt: input.prompt,
+    taskIds: input.taskIds,
+    assets: input.assets,
+    config: input.config,
+    result: input.result,
+    metadata: input.metadata,
+    createdAt: input.createdAt,
+  });
+}
+
 function readPendingRecords(): SaveGenerationRecordInput[] {
   try {
     const raw = window.localStorage.getItem(PENDING_RECORDS_KEY);
@@ -78,26 +103,29 @@ export async function saveGenerationRecord(input: SaveGenerationRecordInput): Pr
   pruneRecentlySaved(now);
 
   const recordId = input.clientRecordId;
+  const signature = buildSaveSignature(input);
   if (recordId) {
-    const inFlight = inFlightSaves.get(recordId);
+    const saveKey = `${recordId}:${signature}`;
+    const inFlight = inFlightSaves.get(saveKey);
     if (inFlight) return inFlight;
-    const savedAt = recentlySavedAt.get(recordId);
-    if (savedAt !== undefined && now - savedAt <= SAVE_DEDUPE_WINDOW_MS) {
-      // 终态记录只需落库一次；窗口内的重复调用直接视为已保存。
+    const savedRecord = recentlySavedRecords.get(recordId);
+    if (savedRecord && savedRecord.signature === signature && now - savedRecord.savedAt <= SAVE_DEDUPE_WINDOW_MS) {
+      // 相同 clientRecordId 且 payload 完全一致时才拦截；同一记录的多轮更新需要继续保存。
       return { source: "server", id: recordId };
     }
   }
 
   const promise = saveGenerationRecordInternal(input);
   if (recordId) {
-    inFlightSaves.set(recordId, promise);
+    const saveKey = `${recordId}:${signature}`;
+    inFlightSaves.set(saveKey, promise);
     void promise
       .then((result) => {
-        if (result.source === "server") recentlySavedAt.set(recordId, Date.now());
+        if (result.source === "server") recentlySavedRecords.set(recordId, { savedAt: Date.now(), signature });
       })
       .catch(() => undefined)
       .finally(() => {
-        inFlightSaves.delete(recordId);
+        inFlightSaves.delete(saveKey);
       });
   }
   return promise;

src/features/ecommerce/EcommercePage.tsx

@@ -25,7 +25,7 @@ import {
   TableOutlined,
   VideoCameraOutlined,
 } from "@ant-design/icons";
-import { useEffect, useMemo, useRef, useState, type CSSProperties, type ChangeEvent, type DragEvent, type KeyboardEvent as ReactKeyboardEvent, type MouseEvent as ReactMouseEvent, type PointerEvent as ReactPointerEvent, type ReactNode } from "react";
+import { Fragment, useEffect, useMemo, useRef, useState, type CSSProperties, type ChangeEvent, type DragEvent, type KeyboardEvent as ReactKeyboardEvent, type MouseEvent as ReactMouseEvent, type PointerEvent as ReactPointerEvent, type ReactNode } from "react";
 import { createPortal } from "react-dom";
 import { useTypewriter } from "../../hooks/useTypewriter";
 import "../../styles/pages/ecommerce.css";
@@ -363,10 +363,13 @@ interface CloneSavedSetting {
   requirement: string;
 }
 
-interface EcommerceHistoryRecord {
+type EcommerceHistoryStatus = "generating" | "done" | "failed";
+
+interface EcommerceHistoryTurn {
   id: string;
-  title: string;
   createdAt: number;
+  status: EcommerceHistoryStatus;
+  errorMessage?: string;
   output: CloneOutputKey;
   platform: string;
   market: string;
@@ -383,6 +386,29 @@ interface EcommerceHistoryRecord {
   replicateLevel: CloneReplicateLevelKey;
 }
 
+interface EcommerceHistoryRecord {
+  id: string;
+  title: string;
+  createdAt: number;
+  status?: EcommerceHistoryStatus;
+  errorMessage?: string;
+  output: CloneOutputKey;
+  platform: string;
+  market: string;
+  language: string;
+  ratio: string;
+  requirement: string;
+  productImages: CloneImageItem[];
+  results: CloneResult[];
+  setResultImages: string[];
+  setCounts: Record<CloneSetCountKey, number>;
+  detailModules: string[];
+  modelScenes: string[];
+  referenceImages: CloneImageItem[];
+  replicateLevel: CloneReplicateLevelKey;
+  turns?: EcommerceHistoryTurn[];
+}
+
 interface ProductSetPreviewSelection {
   src: string;
   label: string;
@@ -1433,9 +1459,67 @@ function removeFilePayloadFromImages(images: CloneImageItem[]): CloneImageItem[]
   }));
 }
 
-function normalizeEcommerceHistoryRecord(record: EcommerceHistoryRecord): EcommerceHistoryRecord {
+function getTurnResults(turn: EcommerceHistoryTurn): CloneResult[] {
+  if (turn.results?.length) return turn.results.filter((item) => item.src);
+  if (turn.output !== "set") return [];
+  return (turn.setResultImages ?? [])
+    .filter(Boolean)
+    .map((src, index) => ({ id: `${turn.id}-set-${index}`, src, label: `套图 ${index + 1}` }));
+}
+
+function buildHistoryTurnFromRecord(record: EcommerceHistoryRecord): EcommerceHistoryTurn {
   return {
+    id: `${record.id}-turn-initial`,
+    createdAt: record.createdAt,
+    status: record.status ?? "done",
+    errorMessage: record.status === "failed" ? record.errorMessage : undefined,
+    output: record.output,
+    platform: record.platform,
+    market: record.market,
+    language: record.language,
+    ratio: record.ratio,
+    requirement: record.requirement,
+    productImages: record.productImages ?? [],
+    results: record.results ?? [],
+    setResultImages: record.setResultImages ?? [],
+    setCounts: record.setCounts ?? defaultCloneSetCounts,
+    detailModules: record.detailModules ?? defaultCloneDetailModuleIds,
+    modelScenes: record.modelScenes ?? [],
+    referenceImages: record.referenceImages ?? [],
+    replicateLevel: record.replicateLevel ?? "high",
+  };
+}
+
+function normalizeEcommerceHistoryTurn(turn: EcommerceHistoryTurn, fallback: EcommerceHistoryRecord, index: number): EcommerceHistoryTurn {
+  const status = turn.status ?? fallback.status ?? "done";
+  return {
+    id: typeof turn.id === "string" && turn.id ? turn.id : `${fallback.id}-turn-${index + 1}`,
+    createdAt: typeof turn.createdAt === "number" ? turn.createdAt : fallback.createdAt,
+    status,
+    errorMessage: status === "failed" ? turn.errorMessage ?? fallback.errorMessage : undefined,
+    output: turn.output ?? fallback.output,
+    platform: turn.platform ?? fallback.platform,
+    market: turn.market ?? fallback.market,
+    language: turn.language ?? fallback.language,
+    ratio: turn.ratio ?? fallback.ratio,
+    requirement: turn.requirement ?? fallback.requirement,
+    productImages: removeFilePayloadFromImages(Array.isArray(turn.productImages) ? turn.productImages : fallback.productImages),
+    results: Array.isArray(turn.results) ? turn.results.filter(isCloneResult) : [],
+    setResultImages: Array.isArray(turn.setResultImages) ? turn.setResultImages.filter(Boolean) : [],
+    setCounts: turn.setCounts ?? fallback.setCounts ?? defaultCloneSetCounts,
+    detailModules: turn.detailModules ?? fallback.detailModules ?? defaultCloneDetailModuleIds,
+    modelScenes: turn.modelScenes ?? fallback.modelScenes ?? [],
+    referenceImages: removeFilePayloadFromImages(Array.isArray(turn.referenceImages) ? turn.referenceImages : fallback.referenceImages ?? []),
+    replicateLevel: turn.replicateLevel ?? fallback.replicateLevel ?? "high",
+  };
+}
+
+function normalizeEcommerceHistoryRecord(record: EcommerceHistoryRecord): EcommerceHistoryRecord {
+  const status = record.status ?? "done";
+  const baseRecord = {
     ...record,
+    status,
+    errorMessage: status === "failed" ? record.errorMessage : undefined,
     productImages: removeFilePayloadFromImages(record.productImages),
     referenceImages: removeFilePayloadFromImages(record.referenceImages ?? []),
     results: record.results ?? [],
@@ -1445,6 +1529,14 @@ function normalizeEcommerceHistoryRecord(record: EcommerceHistoryRecord): Ecomme
     modelScenes: record.modelScenes ?? [],
     replicateLevel: record.replicateLevel ?? "high",
   };
+  const rawTurns = Array.isArray(record.turns) && record.turns.length
+    ? record.turns
+    : [buildHistoryTurnFromRecord(baseRecord)];
+  const turns = rawTurns.map((turn, index) => normalizeEcommerceHistoryTurn(turn, baseRecord, index));
+  return {
+    ...baseRecord,
+    turns,
+  };
 }
 
 function readEcommerceHistoryRecords() {
@@ -1982,6 +2074,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
   const historyRefreshLockRef = useRef(false);
   const lastSavedHistorySignatureRef = useRef("");
   const imageAbortRef = useRef({ current: false });
+  const activeHistoryTurnIdRef = useRef<string | null>(null);
   const activeEcommerceTaskIdsRef = useRef<Set<string>>(new Set());
   const lastFailedActionRef = useRef<(() => void) | null>(null);
   const [garmentImages, setGarmentImages] = useState<CloneImageItem[]>([]);
@@ -2113,7 +2206,25 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     });
     lastFailedActionRef.current = null;
     if (productSetStatus === "generating") setProductSetStatus("idle");
-    if (status === "generating") setStatus("idle");
+    if (status === "generating") {
+      setStatus("idle");
+      if (activeHistoryRecordId) {
+        const turnId = activeHistoryTurnIdRef.current;
+        if (turnId) {
+          updateLocalEcommerceHistoryTurn(activeHistoryRecordId, turnId, (turn) => ({
+            ...turn,
+            status: "failed",
+            errorMessage: "已取消生成",
+          }));
+        } else {
+          updateLocalEcommerceHistoryRecord(activeHistoryRecordId, (record) => ({
+            ...record,
+            status: "failed",
+            errorMessage: "已取消生成",
+          }));
+        }
+      }
+    }
     if (detailStatus === "generating") setDetailStatus("idle");
     if (tryOnStatus === "generating") setTryOnStatus("idle");
     if (tryOnStatus === "modeling") setTryOnStatus("ready");
@@ -4118,27 +4229,50 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     setIsCommandComposerCompact(true);
     imageAbortRef.current = { current: false };
     lastFailedActionRef.current = null;
+    setGenerationProgress(0);
+    setResults([]);
+    setProductSetResultImages([]);
+    const pendingGeneration = beginEcommerceHistoryTurn();
+    const pendingRecordId = pendingGeneration.record.id;
+    const pendingTurnId = pendingGeneration.turn.id;
+    setPreviewZoom(1);
+    setPreviewOffset({ x: 0, y: 0 });
+    previewOffsetRef.current = { x: 0, y: 0 };
     if (cloneOutput === "set") {
       void generateSetImages(
         productImages, cloneSetCounts, requirement,
         platform, ratio, language, market,
-        (s) => setStatus(s as ProductCloneStatus),
+        (s) => {
+          setStatus(s as ProductCloneStatus);
+          if (s === "generating") {
+            updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({ ...turn, status: "generating", errorMessage: undefined }));
+          } else if (s === "failed") {
+            updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({ ...turn, status: "failed", errorMessage: "生成失败，请检查网络或参数后重试。" }));
+          }
+        },
         (urls) => {
           setProductSetResultImages(urls);
           const validUrls = urls.filter(Boolean);
+          const resultCards = validUrls.map((src, i) => ({ id: `set-${Date.now()}-${i}`, src, label: `套图 ${i + 1}` }));
+          updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({
+            ...turn,
+            status: validUrls.length ? "done" : "failed",
+            errorMessage: validUrls.length ? undefined : "生成未返回结果",
+            setResultImages: validUrls,
+            results: resultCards,
+          }));
           if (validUrls.length) {
-            setCanvasNodes((prev) => [...prev, {
-              id: `node-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`,
+            upsertCanvasNode({
+              id: pendingTurnId,
               mode: "set",
               sourceImage: productImages[0]?.src,
-              results: validUrls.map((src, i) => ({ id: `set-${Date.now()}-${i}`, src, label: `套图 ${i + 1}` })),
+              results: resultCards,
               createdAt: Date.now(),
-              x: prev.length * 420,
-              y: 0,
-            }]);
+            });
           }
         },
       );
+      lastFailedActionRef.current = () => handleGenerate();
     } else {
       const clonePromptOptions: EcommerceImagePromptOptions | undefined =
         cloneOutput === "model"
@@ -4157,19 +4291,32 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
         cloneOutput, productImages, requirement,
         platform, ratio, language, market,
         clonePromptOptions,
-        (s: string) => setStatus(s as ProductCloneStatus),
+        (s: string) => {
+          setStatus(s as ProductCloneStatus);
+          if (s === "generating") {
+            updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({ ...turn, status: "generating", errorMessage: undefined }));
+          } else if (s === "failed") {
+            updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({ ...turn, status: "failed", errorMessage: "生成失败，请检查网络或参数后重试。" }));
+          }
+        },
         (newResults: CloneResult[]) => {
-          setResults(newResults);
-          if (newResults.length && newResults[0].src) {
-            setCanvasNodes((prev) => [...prev, {
-              id: `node-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`,
+          const validResults = newResults.filter((item) => item.src);
+          setResults(validResults);
+          updateLocalEcommerceHistoryTurn(pendingRecordId, pendingTurnId, (turn) => ({
+            ...turn,
+            status: validResults.length ? "done" : "failed",
+            errorMessage: validResults.length ? undefined : newResults[0]?.label || "生成未返回结果",
+            results: validResults,
+            setResultImages: [],
+          }));
+          if (validResults.length && validResults[0].src) {
+            upsertCanvasNode({
+              id: pendingTurnId,
               mode: cloneOutput,
               sourceImage: productImages[0]?.src,
-              results: newResults,
+              results: validResults,
               createdAt: Date.now(),
-              x: prev.length * 420,
-              y: 0,
-            }]);
+            });
           }
         },
       );
@@ -4273,6 +4420,23 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     toast.success("已从当前视图移除");
   };
 
+  const upsertCanvasNode = (node: Omit<CanvasNode, "x" | "y">) => {
+    setCanvasNodes((current) => {
+      const existingIndex = current.findIndex((item) => item.id === node.id);
+      if (existingIndex >= 0) {
+        return current.map((item) => (item.id === node.id ? { ...item, ...node } : item));
+      }
+      return [
+        ...current,
+        {
+          ...node,
+          x: current.length * 420,
+          y: current.length % 2 === 0 ? 0 : 160,
+        },
+      ];
+    });
+  };
+
   const removeSelectedProductSetPreview = (preview: ProductSetPreviewSelection) => {
     if (!preview.nodeId || !preview.cardId) return;
     removeCanvasResult(preview.nodeId, preview.cardId);
@@ -4583,46 +4747,12 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
       sourceImages.map((item) => item.src).join("|"),
     ].join("::");
 
-  const formatHistoryTime = (timestamp: number) => {
-    const diff = Math.max(0, Date.now() - timestamp);
-    const minute = 60 * 1000;
-    const hour = 60 * minute;
-    const day = 24 * hour;
-    if (diff < minute) return "刚刚";
-    if (diff < hour) return String(Math.floor(diff / minute)) + " 分钟前";
-    if (diff < day) return String(Math.floor(diff / hour)) + " 小时前";
-    return String(Math.floor(diff / day)) + " 天前";
+  const getHistoryRecordResults = (record: EcommerceHistoryRecord) => {
+    const turns = record.turns?.length ? record.turns : [buildHistoryTurnFromRecord(record)];
+    return turns.flatMap(getTurnResults);
   };
 
-  const saveCurrentEcommerceHistory = () => {
-    const historyResults = getCurrentHistoryResults();
-    if (!historyResults.length) return null;
-    const signature = buildHistorySignature(cloneOutput, requirement, historyResults, productImages);
-    if (lastSavedHistorySignatureRef.current === signature && activeHistoryRecordId) return activeHistoryRecordId;
-
-    const createdAt = Date.now();
-    const outputLabel = cloneOutputOptions.find((option) => option.key === cloneOutput)?.label || "生成记录";
-      const title = requirement.trim() || outputLabel + " " + new Date(createdAt).toLocaleTimeString("zh-CN", { hour: "2-digit", minute: "2-digit" });
-    const record: EcommerceHistoryRecord = {
-      id: crypto.randomUUID(),
-      title,
-      createdAt,
-      output: cloneOutput,
-      platform,
-      market,
-      language,
-      ratio,
-      requirement,
-      productImages,
-      results: historyResults,
-      setResultImages: cloneOutput === "set" ? historyResults.map((item) => item.src) : [],
-      setCounts: cloneSetCounts,
-      detailModules: selectedCloneDetailModules,
-      modelScenes: selectedCloneModelScenes,
-      referenceImages: cloneReferenceImages,
-      replicateLevel: cloneReplicateLevel,
-    };
-    lastSavedHistorySignatureRef.current = signature;
+  const persistEcommerceHistoryRecord = (record: EcommerceHistoryRecord, historyResults: CloneResult[]) => {
     void saveUnifiedEcommerceGenerationRecord({
       clientRecordId: record.id,
       title: record.title,
@@ -4651,9 +4781,172 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
       metadata: {
         localHistoryStorageKey: ecommerceHistoryStorageKey,
         referenceImageCount: record.referenceImages.length,
+        turnCount: record.turns?.length ?? 1,
+        latestTurnId: record.turns?.[record.turns.length - 1]?.id,
       },
       createdAt: new Date(record.createdAt).toISOString(),
     });
+  };
+
+  const formatHistoryTime = (timestamp: number) => {
+    const diff = Math.max(0, Date.now() - timestamp);
+    const minute = 60 * 1000;
+    const hour = 60 * minute;
+    const day = 24 * hour;
+    if (diff < minute) return "刚刚";
+    if (diff < hour) return String(Math.floor(diff / minute)) + " 分钟前";
+    if (diff < day) return String(Math.floor(diff / hour)) + " 小时前";
+    return String(Math.floor(diff / day)) + " 天前";
+  };
+
+  const buildEcommerceHistoryTitle = (output: CloneOutputKey, prompt: string, createdAt: number) => {
+    const outputLabel = cloneOutputOptions.find((option) => option.key === output)?.label || "生成记录";
+    return prompt.trim() || outputLabel + " " + new Date(createdAt).toLocaleTimeString("zh-CN", { hour: "2-digit", minute: "2-digit" });
+  };
+
+  const updateLocalEcommerceHistoryRecord = (recordId: string, updater: (record: EcommerceHistoryRecord) => EcommerceHistoryRecord) => {
+    setEcommerceHistoryRecords((current) => {
+      const nextRecords = current.map((record) => (record.id === recordId ? normalizeEcommerceHistoryRecord(updater(record)) : record));
+      writeEcommerceHistoryRecords(nextRecords);
+      return nextRecords;
+    });
+  };
+
+  const buildCurrentEcommerceHistoryTurn = (turnId: string, createdAt: number, turnStatus: EcommerceHistoryStatus = "generating"): EcommerceHistoryTurn => ({
+    id: turnId,
+    createdAt,
+    status: turnStatus,
+    output: cloneOutput,
+    platform,
+    market,
+    language,
+    ratio,
+    requirement,
+    productImages,
+    results: [],
+    setResultImages: [],
+    setCounts: cloneSetCounts,
+    detailModules: selectedCloneDetailModules,
+    modelScenes: selectedCloneModelScenes,
+    referenceImages: cloneReferenceImages,
+    replicateLevel: cloneReplicateLevel,
+  });
+
+  const syncRecordSummaryWithTurn = (record: EcommerceHistoryRecord, turn: EcommerceHistoryTurn): EcommerceHistoryRecord => ({
+    ...record,
+    status: turn.status,
+    errorMessage: turn.status === "failed" ? turn.errorMessage : undefined,
+    output: turn.output,
+    platform: turn.platform,
+    market: turn.market,
+    language: turn.language,
+    ratio: turn.ratio,
+    requirement: turn.requirement,
+    productImages: turn.productImages,
+    results: turn.results,
+    setResultImages: turn.setResultImages,
+    setCounts: turn.setCounts,
+    detailModules: turn.detailModules,
+    modelScenes: turn.modelScenes,
+    referenceImages: turn.referenceImages,
+    replicateLevel: turn.replicateLevel,
+  });
+
+  const updateLocalEcommerceHistoryTurn = (
+    recordId: string,
+    turnId: string,
+    updater: (turn: EcommerceHistoryTurn) => EcommerceHistoryTurn,
+  ) => {
+    updateLocalEcommerceHistoryRecord(recordId, (record) => {
+      const turns = record.turns?.length ? record.turns : [buildHistoryTurnFromRecord(record)];
+      let updatedTurn: EcommerceHistoryTurn | null = null;
+      const nextTurns = turns.map((turn) => {
+        if (turn.id !== turnId) return turn;
+        updatedTurn = normalizeEcommerceHistoryTurn(updater(turn), record, turns.indexOf(turn));
+        return updatedTurn;
+      });
+      return updatedTurn ? syncRecordSummaryWithTurn({ ...record, turns: nextTurns }, updatedTurn) : record;
+    });
+  };
+
+  const beginEcommerceHistoryTurn = () => {
+    const createdAt = Date.now();
+    const turn = buildCurrentEcommerceHistoryTurn(crypto.randomUUID(), createdAt);
+    const existingRecord = activeHistoryRecordId
+      ? ecommerceHistoryRecords.find((record) => record.id === activeHistoryRecordId)
+      : null;
+    const recordId = existingRecord?.id ?? crypto.randomUUID();
+    const baseRecord: EcommerceHistoryRecord = existingRecord ?? {
+      id: recordId,
+      title: buildEcommerceHistoryTitle(cloneOutput, requirement, createdAt),
+      createdAt,
+      status: turn.status,
+      output: turn.output,
+      platform: turn.platform,
+      market: turn.market,
+      language: turn.language,
+      ratio: turn.ratio,
+      requirement: turn.requirement,
+      productImages: turn.productImages,
+      results: turn.results,
+      setResultImages: turn.setResultImages,
+      setCounts: turn.setCounts,
+      detailModules: turn.detailModules,
+      modelScenes: turn.modelScenes,
+      referenceImages: turn.referenceImages,
+      replicateLevel: turn.replicateLevel,
+      turns: [],
+    };
+    const previousTurns = baseRecord.turns?.length ? baseRecord.turns : existingRecord ? [buildHistoryTurnFromRecord(baseRecord)] : [];
+    const record = normalizeEcommerceHistoryRecord(syncRecordSummaryWithTurn({
+      ...baseRecord,
+      turns: [...previousTurns, turn],
+    }, turn));
+    setEcommerceHistoryRecords((current) => {
+      const nextRecords = [record, ...current.filter((item) => item.id !== record.id)].slice(0, 30);
+      writeEcommerceHistoryRecords(nextRecords);
+      return nextRecords;
+    });
+    setActiveHistoryRecordId(record.id);
+    activeHistoryTurnIdRef.current = turn.id;
+    return { record, turn };
+  };
+
+  const saveCurrentEcommerceHistory = () => {
+    const activeRecord = activeHistoryRecordId ? ecommerceHistoryRecords.find((record) => record.id === activeHistoryRecordId) : null;
+    const historyResults = activeRecord?.turns?.length ? getHistoryRecordResults(activeRecord) : getCurrentHistoryResults();
+    if (!historyResults.length) return null;
+    const signature = activeRecord?.turns?.length
+      ? buildHistorySignature(activeRecord.output, activeRecord.requirement, historyResults, activeRecord.productImages)
+      : buildHistorySignature(cloneOutput, requirement, historyResults, productImages);
+    if (lastSavedHistorySignatureRef.current === signature && activeHistoryRecordId) return activeHistoryRecordId;
+
+    const createdAt = Date.now();
+    const record: EcommerceHistoryRecord = activeRecord?.turns?.length
+      ? normalizeEcommerceHistoryRecord(activeRecord)
+      : normalizeEcommerceHistoryRecord({
+          id: activeRecord?.id ?? crypto.randomUUID(),
+          title: activeRecord?.title ?? buildEcommerceHistoryTitle(cloneOutput, requirement, createdAt),
+          createdAt: activeRecord?.createdAt ?? createdAt,
+          status: "done",
+          errorMessage: undefined,
+          output: cloneOutput,
+          platform,
+          market,
+          language,
+          ratio,
+          requirement,
+          productImages,
+          results: historyResults,
+          setResultImages: cloneOutput === "set" ? historyResults.map((item) => item.src) : [],
+          setCounts: cloneSetCounts,
+          detailModules: selectedCloneDetailModules,
+          modelScenes: selectedCloneModelScenes,
+          referenceImages: cloneReferenceImages,
+          replicateLevel: cloneReplicateLevel,
+        });
+    lastSavedHistorySignatureRef.current = signature;
+    persistEcommerceHistoryRecord(record, historyResults);
     setEcommerceHistoryRecords((current) => {
       const nextRecords = [record, ...current.filter((item) => item.id !== record.id)].slice(0, 30);
       writeEcommerceHistoryRecords(nextRecords);
@@ -4679,32 +4972,34 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     setCloneReplicateLevel(record.replicateLevel);
     setProductSetResultImages(record.setResultImages);
     setResults(record.output === "set" ? [] : record.results);
-    setStatus("done");
+    setStatus((record.status ?? "done") as ProductCloneStatus);
     setPreviewZoom(1);
     setComposerMenu(null);
     setActiveHistoryRecordId(record.id);
-    lastSavedHistorySignatureRef.current = buildHistorySignature(record.output, record.requirement, record.results, record.productImages);
+    activeHistoryTurnIdRef.current = record.status === "generating"
+      ? record.turns?.find((turn) => turn.status === "generating")?.id ?? null
+      : null;
+    const recordResults = getHistoryRecordResults(record);
+    lastSavedHistorySignatureRef.current = buildHistorySignature(record.output, record.requirement, recordResults, record.productImages);
     setIsCommandComposerCompact(true);
 
-    const hasResults = record.output === "set"
-      ? record.setResultImages.some(Boolean)
-      : record.results.some((r) => r.src);
-    if (hasResults) {
-      const nodeResults: CloneResult[] = record.output === "set"
-        ? record.setResultImages.filter(Boolean).map((url, i) => ({ id: `set-${i}`, src: url, label: `套图 ${i + 1}` }))
-        : record.results;
-      setCanvasNodes([{
-        id: record.id,
-        mode: record.output,
-        sourceImage: record.productImages[0]?.src,
-        results: nodeResults,
-        createdAt: record.createdAt,
-        x: 0,
-        y: 0,
-      }]);
-    } else {
-      setCanvasNodes([]);
-    }
+    const turns = record.turns?.length ? record.turns : [buildHistoryTurnFromRecord(record)];
+    const nodes = turns.reduce<CanvasNode[]>((items, turn) => {
+      const turnResults = getTurnResults(turn);
+      if (!turnResults.length) return items;
+      const index = items.length;
+      items.push({
+        id: turn.id,
+        mode: turn.output,
+        sourceImage: turn.productImages[0]?.src,
+        results: turnResults,
+        createdAt: turn.createdAt,
+        x: index * 420,
+        y: index % 2 === 0 ? 0 : 160,
+      });
+      return items;
+    }, []);
+    setCanvasNodes(nodes);
 
     setPreviewOffset({ x: 0, y: 0 });
     previewOffsetRef.current = { x: 0, y: 0 };
@@ -4719,6 +5014,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     setComposerMenu(null);
     setIsCommandComposerCompact(false);
     setActiveHistoryRecordId(null);
+    activeHistoryTurnIdRef.current = null;
     lastSavedHistorySignatureRef.current = "";
   };
 
@@ -4757,7 +5053,10 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
     const next = ecommerceHistoryRecords.filter((r) => r.id !== recordId);
     setEcommerceHistoryRecords(next);
     writeEcommerceHistoryRecords(next);
-    if (activeHistoryRecordId === recordId) setActiveHistoryRecordId(null);
+    if (activeHistoryRecordId === recordId) {
+      setActiveHistoryRecordId(null);
+      activeHistoryTurnIdRef.current = null;
+    }
     deleteEcommerceGenerationRecord(recordId).catch(() => {});
   };
 
@@ -7417,26 +7716,35 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
   const isRecordDetailWorkspace = isMainCloneWorkspace && Boolean(activeHistoryRecordId);
   const currentResultCount = canvasNodes.reduce((count, node) => count + node.results.length, 0);
   const activeHistoryRecord = activeHistoryRecordId ? ecommerceHistoryRecords.find((record) => record.id === activeHistoryRecordId) : null;
-  const currentResultThumbs = canvasNodes.flatMap((node) => node.results).slice(0, 6);
-  const activeHistoryImageIds = new Set((activeHistoryRecord?.productImages ?? []).map((image) => image.id));
-  const historyConversationImages = activeHistoryRecord?.productImages?.length ? activeHistoryRecord.productImages : productImages;
-  const newConversationImages = activeHistoryRecord ? productImages.filter((image) => !activeHistoryImageIds.has(image.id)) : [];
-  const historyRequirementText = activeHistoryRecord?.requirement?.trim() || requirement.trim();
-  const newRequirementText = requirement.trim() && requirement.trim() !== historyRequirementText
-    ? requirement.trim()
-    : "继续上传素材，准备下一轮生成。";
-  const historyRequirementMeta = [
-    { label: "平台", value: activeHistoryRecord?.platform || platform },
-    { label: "语种", value: activeHistoryRecord?.language || language },
-    { label: "比例", value: formatRatioDisplayValue(activeHistoryRecord?.ratio || ratio) },
-    { label: "设置", value: composerSettingLabel },
-  ];
-  const currentRequirementMeta = [
-    { label: "平台", value: platform },
-    { label: "语种", value: language },
-    { label: "比例", value: formatRatioDisplayValue(ratio) },
-    { label: "设置", value: composerSettingLabel },
-  ];
+  const activeConversationTurns = activeHistoryRecord
+    ? activeHistoryRecord.turns?.length
+      ? activeHistoryRecord.turns
+      : [buildHistoryTurnFromRecord(activeHistoryRecord)]
+    : [];
+  const getHistoryTurnSettingLabel = (turn: EcommerceHistoryTurn) => {
+    if (turn.output === "set") {
+      const total = cloneSetCountKeys.reduce((sum, key) => sum + (turn.setCounts?.[key] ?? 0), 0);
+      return `套图 ${total || 1}张`;
+    }
+    if (turn.output === "detail") return `详情 ${turn.detailModules?.length || 1}项`;
+    if (turn.output === "model") return `模特 ${turn.modelScenes?.length || 1}景`;
+    return cloneOutputOptions.find((option) => option.key === turn.output)?.label || selectedCloneOutput.label;
+  };
+  const restoreHistoryTurnInputs = (turn: EcommerceHistoryTurn) => {
+    setCloneOutput(turn.output);
+    setPlatform(turn.platform);
+    setMarket(turn.market);
+    setLanguage(turn.language);
+    setRatio(turn.ratio);
+    setRequirement(turn.requirement);
+    setProductImages(turn.productImages);
+    setCloneSetCounts(turn.setCounts);
+    setSelectedCloneDetailModules(turn.detailModules.slice(0, maxDetailModuleSelection));
+    setSelectedCloneModelScenes(turn.modelScenes);
+    setCloneReferenceImages(turn.referenceImages);
+    setCloneReplicateLevel(turn.replicateLevel);
+    toast.info("已恢复该轮参数，可继续发送");
+  };
 
   return (
     <section
@@ -7496,75 +7804,73 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
                 </button>
               </header>
               <div className="clone-ai-conversation-body">
-                <section className="clone-ai-chat-message clone-ai-chat-message--user">
-                  <span>需求</span>
-                  <p>{historyRequirementText || "上传商品素材，描述你想生成的商品图、详情图、模特图或短视频。"}</p>
-                  <div className="clone-ai-chat-meta" aria-label="需求参数">
-                    {historyRequirementMeta.map((item) => (
-                      <em key={item.label}>
-                        <span>{item.label}</span>
-                        <strong>{item.value}</strong>
-                      </em>
-                    ))}
-                  </div>
-                  {historyConversationImages.length ? (
-                    <div className="clone-ai-chat-assets" aria-label="已上传素材">
-                      {historyConversationImages.slice(0, 4).map((image) => (
-                        <img key={image.id} src={image.src} alt={image.name || "商品素材"} />
-                      ))}
-                      {historyConversationImages.length > 4 ? <em>+{historyConversationImages.length - 4}</em> : null}
-                    </div>
-                  ) : null}
-                </section>
-                <section className={`clone-ai-chat-message clone-ai-chat-message--assistant is-${status}`}>
-                  <span>电商图设计师</span>
-                  <p>
-                    {status === "done" || currentResultCount > 0
-                      ? `已生成 ${currentResultCount || results.length || productSetResultImages.filter(Boolean).length} 张结果，可在画布中拖拽、缩放和预览。`
-                      : status === "generating"
-                        ? `正在为 ${platform} / ${market} 生成${selectedCloneOutput.label}，结果会自动出现在中间画布。`
-                        : status === "failed"
-                          ? "生成失败，请检查网络或参数后重试。"
-                          : "我会根据商品图、平台规则和提示词整理生成任务。"}
-                  </p>
-                  {status === "generating" ? (
-                    <EcommerceProgressBar status="generating" progress={generationProgress} onCancel={handleCancelGenerate} label={`${selectedCloneOutput.label}生成`} />
-                  ) : null}
-                  {currentResultThumbs.length ? (
-                    <div className="clone-ai-chat-results" aria-label="生成结果缩略图">
-                      {currentResultThumbs.map((item) => (
-                        <button
-                          key={item.id}
-                          type="button"
-                          onClick={() => openProductSetPreview(item)}
-                          aria-label={`预览${item.label}`}
-                        >
-                          <img src={item.src} alt={item.label} />
-                        </button>
-                      ))}
-                    </div>
-                  ) : null}
-                </section>
-                {newConversationImages.length ? (
-                  <section className="clone-ai-chat-message clone-ai-chat-message--user clone-ai-chat-message--followup">
-                    <span>新需求</span>
-                    <p>{newRequirementText}</p>
-                    <div className="clone-ai-chat-meta" aria-label="新需求参数">
-                      {currentRequirementMeta.map((item) => (
-                        <em key={item.label}>
-                          <span>{item.label}</span>
-                          <strong>{item.value}</strong>
-                        </em>
-                      ))}
-                    </div>
-                    <div className="clone-ai-chat-assets" aria-label="新增素材">
-                      {newConversationImages.slice(0, 4).map((image) => (
-                        <img key={image.id} src={image.src} alt={image.name || "新增商品素材"} />
-                      ))}
-                      {newConversationImages.length > 4 ? <em>+{newConversationImages.length - 4}</em> : null}
-                    </div>
-                  </section>
-                ) : null}
+                {activeConversationTurns.map((turn, index) => {
+                  const turnResults = getTurnResults(turn);
+                  const outputLabel = cloneOutputOptions.find((option) => option.key === turn.output)?.label || selectedCloneOutput.label;
+                  const turnMeta = [
+                    { label: "平台", value: turn.platform },
+                    { label: "语种", value: turn.language },
+                    { label: "比例", value: formatRatioDisplayValue(turn.ratio) },
+                    { label: "设置", value: getHistoryTurnSettingLabel(turn) },
+                  ];
+                  const isCurrentGeneratingTurn = turn.status === "generating" && turn.id === activeHistoryTurnIdRef.current;
+                  return (
+                    <Fragment key={turn.id}>
+                      <section className={`clone-ai-chat-message clone-ai-chat-message--user${index > 0 ? " clone-ai-chat-message--followup" : ""}`}>
+                        <span>{index === 0 ? "需求" : `继续生成 ${index + 1}`}</span>
+                        <p>{turn.requirement?.trim() || "上传商品素材，描述你想生成的商品图、详情图、模特图或短视频。"}</p>
+                        <div className="clone-ai-chat-meta" aria-label="需求参数">
+                          {turnMeta.map((item) => (
+                            <em key={item.label}>
+                              <span>{item.label}</span>
+                              <strong>{item.value}</strong>
+                            </em>
+                          ))}
+                        </div>
+                        {turn.productImages.length ? (
+                          <div className="clone-ai-chat-assets" aria-label="已上传素材">
+                            {turn.productImages.slice(0, 4).map((image) => (
+                              <img key={image.id} src={image.src} alt={image.name || "商品素材"} />
+                            ))}
+                            {turn.productImages.length > 4 ? <em>+{turn.productImages.length - 4}</em> : null}
+                          </div>
+                        ) : null}
+                      </section>
+                      <section className={`clone-ai-chat-message clone-ai-chat-message--assistant is-${turn.status}`}>
+                        <span>电商图设计师</span>
+                        <p>
+                          {turn.status === "done" || turnResults.length
+                            ? `已生成 ${turnResults.length} 张${outputLabel}，已同步到中间画布，可拖拽、缩放和预览。`
+                            : turn.status === "generating"
+                              ? `正在为 ${turn.platform} / ${turn.market} 生成${outputLabel}，完成后会自动追加到画布。`
+                              : turn.errorMessage || "生成失败，请检查网络或参数后重试。"}
+                        </p>
+                        {isCurrentGeneratingTurn ? (
+                          <EcommerceProgressBar status="generating" progress={generationProgress} onCancel={handleCancelGenerate} label={`${outputLabel}生成`} />
+                        ) : null}
+                        {turn.status === "failed" ? (
+                          <button type="button" className="clone-ai-retry-btn" onClick={() => restoreHistoryTurnInputs(turn)}>
+                            <ReloadOutlined /> 恢复参数
+                          </button>
+                        ) : null}
+                        {turnResults.length ? (
+                          <div className="clone-ai-chat-results" aria-label="生成结果缩略图">
+                            {turnResults.slice(0, 6).map((item) => (
+                              <button
+                                key={item.id}
+                                type="button"
+                                onClick={() => openProductSetPreview(item)}
+                                aria-label={`预览${item.label}`}
+                              >
+                                <img src={item.src} alt={item.label} />
+                              </button>
+                            ))}
+                          </div>
+                        ) : null}
+                      </section>
+                    </Fragment>
+                  );
+                })}
               </div>
             </aside>
             <button
@@ -7628,6 +7934,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
           {ecommerceHistoryRecords.length ? (
             ecommerceHistoryRecords.map((record) => {
               const outputLabel = cloneOutputOptions.find((option) => option.key === record.output)?.label || "生成记录";
+              const statusLabel = record.status === "generating" ? "生成中" : record.status === "failed" ? "失败" : formatHistoryTime(record.createdAt);
               return (
                 <div key={`${record.id}-${historyRefreshTick}`} className={`ecom-command-history__item${activeHistoryRecordId === record.id ? " is-active" : ""}`}>
                   <button
@@ -7636,7 +7943,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
                     onClick={() => openEcommerceHistoryRecord(record)}
                   >
                     <strong>{record.title}</strong>
-                    <span>{outputLabel} · {formatHistoryTime(record.createdAt)}</span>
+                    <span>{outputLabel} · {statusLabel}</span>
                   </button>
                   <button
                     type="button"
@@ -7656,7 +7963,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
         </nav>
       </aside>
 
-      {selectedProductSetPreview ? (
+      {selectedProductSetPreview && typeof document !== "undefined" ? createPortal((
         <div className="product-set-preview-backdrop" role="presentation" onClick={() => setSelectedProductSetPreview(null)}>
           <section
             className="product-set-preview-modal"
@@ -7701,7 +8008,7 @@ function ProductClonePage(_props: ProductClonePageProps = {}) {
             </div>
           </section>
         </div>
-      ) : null}
+      ), document.body) : null}
 
       {showHostingModal ? (
         <div className="product-set-hosting-backdrop" role="presentation">

src/styles/pages/ecommerce.css

@@ -7861,7 +7861,7 @@
 .product-set-preview-backdrop {
   position: fixed;
   inset: 0;
-  z-index: 100;
+  z-index: 4000;
   display: grid;
   place-items: center;
   background: rgb(17 24 39 / 58%);