重构世界模拟器为模块化配方架构，完善创作编排、会话运行时与 Web UI，并清理过时技能。

Co-authored-by: Cursor <cursoragent@cursor.com>

src/book/store.ts

@@ -1,11 +1,23 @@
 import { randomUUID } from "node:crypto";
-import { mkdirSync, readdirSync, readFileSync, unlinkSync, writeFileSync } from "node:fs";
+import {
+  cpSync,
+  existsSync,
+  mkdirSync,
+  readdirSync,
+  readFileSync,
+  unlinkSync,
+  writeFileSync,
+} from "node:fs";
 import path from "node:path";
 import type { BookProject, BookSummary } from "../types/book.js";
+import type { PersistedBookSession } from "../types/book-session.js";
+import type { RunSnapshot } from "../types/run-snapshot.js";
 import { ensureUserDataDirs, getUserDataDir } from "../config/user-data-dir.js";
 import { deleteBookSession } from "./session-store.js";
 import { deleteAllRunSnapshots } from "./run-snapshot-store.js";
 
+const SESSION_FILENAME = "session.json";
+
 function booksDir(): string {
   return path.join(getUserDataDir(), "books");
 }
@@ -14,6 +26,10 @@ function bookPath(id: string): string {
   return path.join(booksDir(), `${id}.json`);
 }
 
+function bookDataDir(id: string): string {
+  return path.join(getUserDataDir(), "books", id);
+}
+
 export function listBooks(): BookSummary[] {
   ensureUserDataDirs();
   mkdirSync(booksDir(), { recursive: true });
@@ -64,7 +80,7 @@ export function createBook(input: { title?: string }): BookProject {
   const book: BookProject = {
     id: randomUUID(),
     title: input.title?.trim() || "未命名作品",
-    preview: "新建作品，选择 skill 包开始…",
+    preview: "新建作品，描述你想创作什么…",
     sessionIds: [],
     createdAt: now,
     updatedAt: now,
@@ -84,6 +100,8 @@ export function updateBook(
       | "activeSessionId"
       | "activeSkillId"
       | "activeSkillName"
+      | "orchestratorId"
+      | "orchestratorName"
     >
   >,
 ): BookProject {
@@ -115,3 +133,69 @@ export function deleteBook(id: string): void {
     /* ignore */
   }
 }
+
+/** 复制作品及其会话、游玩存档为新作品 */
+export function duplicateBook(sourceId: string, title?: string): BookProject {
+  const source = getBook(sourceId);
+  if (!source) throw new Error("Book 不存在");
+
+  const newId = randomUUID();
+  const newSessionId = randomUUID();
+  const now = new Date().toISOString();
+  const dupTitle = title?.trim() || `${source.title} 副本`;
+
+  ensureUserDataDirs();
+  const sourceDir = bookDataDir(sourceId);
+  const destDir = bookDataDir(newId);
+
+  if (existsSync(sourceDir)) {
+    cpSync(sourceDir, destDir, { recursive: true });
+  } else {
+    mkdirSync(destDir, { recursive: true });
+  }
+
+  const sessionFile = path.join(destDir, SESSION_FILENAME);
+  let sessionIds: string[] = [];
+  let activeSessionId: string | undefined;
+
+  if (existsSync(sessionFile)) {
+    try {
+      const snap = JSON.parse(readFileSync(sessionFile, "utf8")) as PersistedBookSession;
+      snap.bookId = newId;
+      snap.sessionId = newSessionId;
+      snap.runtimeSession.id = newSessionId;
+      snap.savedAt = now;
+      writeFileSync(sessionFile, JSON.stringify(snap, null, 2), "utf8");
+      sessionIds = [newSessionId];
+      activeSessionId = newSessionId;
+    } catch {
+      /* ignore broken session */
+    }
+  }
+
+  const snapDir = path.join(destDir, "run-snapshots");
+  if (existsSync(snapDir)) {
+    for (const file of readdirSync(snapDir).filter((f) => f.endsWith(".json"))) {
+      try {
+        const full = path.join(snapDir, file);
+        const raw = JSON.parse(readFileSync(full, "utf8")) as RunSnapshot;
+        raw.bookId = newId;
+        writeFileSync(full, JSON.stringify(raw, null, 2), "utf8");
+      } catch {
+        /* skip */
+      }
+    }
+  }
+
+  const newBook: BookProject = {
+    ...structuredClone(source),
+    id: newId,
+    title: dupTitle,
+    sessionIds,
+    activeSessionId,
+    createdAt: now,
+    updatedAt: now,
+  };
+  writeFileSync(bookPath(newId), JSON.stringify(newBook, null, 2), "utf8");
+  return newBook;
+}