Keep creation as a living DAG and archive playable products separately.

Opening accept no longer locks the graph; session.json stays creation-only while play starts from an instance snapshot. Sidebar products nest run saves, and play reading fills the feed at a denser type size.

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

src/runtime/phase-machine.ts

@@ -31,7 +31,6 @@ import {
   normalizeQuestions,
 } from "../skills/question-protocol.js";
 import {
-  CREATION_SEALED_WAITING_MESSAGE,
   SLOT_CREATION_SEALED_BY_OPENING,
   isOpeningSealArtifact,
 } from "../skills/opening-seal.js";
@@ -785,21 +784,6 @@ export function applyEvent(
         };
       }
 
-      if (session.slots[SLOT_CREATION_SEALED_BY_OPENING]) {
-        return {
-          session: waiting(touch({ ...next, resumeContext: undefined }), {
-            kind: "input",
-            message: CREATION_SEALED_WAITING_MESSAGE,
-          }),
-          effects: [
-            {
-              type: "emit_message",
-              message: "创作已收口并保存。请切换到「游玩」开始。",
-            },
-          ],
-        };
-      }
-
       // 常规定稿用户输入 → 等总管下一步
       return {
         session: touch(running({ ...next, resumeContext: undefined })),
@@ -1178,14 +1162,14 @@ export function applyEvent(
         pendingDecision: undefined,
         currentWorkerId: undefined,
       };
-      // 开场白终节点：选定后落库、关 DAG，不再问「下一步想写什么」。
+      // 开场白终节点：落库开场，再回到分层图。创作流程保留，产物靠「保存」拆出。
       if (isOpeningSealArtifact(artifact)) {
         return {
-          session: waiting(cleared, {
-            kind: "input",
-            message: CREATION_SEALED_WAITING_MESSAGE,
-          }),
-          effects: [{ type: "seal_creation_opening" }],
+          session: touch(running(cleared)),
+          effects: [
+            { type: "seal_creation_opening" },
+            { type: "propose_next_creation_step" },
+          ],
         };
       }
       if (inferLifecycleStage(session) === "play") {

src/runtime/phase-runtime.ts

@@ -85,6 +85,7 @@ import {
   isInstanceStep,
   findStepByRef,
   findModuleByName,
+  hasAcceptedCloserStep,
   parseCreationFlow,
   DESIGN_FLOW_WORKER_ID,
   DESIGN_STEP_WORKER_ID,
@@ -114,9 +115,8 @@ import {
   SLOT_ASKED_QUESTIONS,
 } from "../skills/question-protocol.js";
 import { parseWorkerSetYaml } from "../skills/worker-set-parse.js";
+import { defaultPlaySlots } from "../skills/play-slots.js";
 import {
-  closeCreationFlowRaw,
-  CREATION_SEALED_WAITING_MESSAGE,
   mergeOpeningTablePatch,
   OPENING_CURRENT_VARS_TAG,
   OPENING_INITIAL_VARS_TAG,
@@ -427,6 +427,23 @@ export class PhaseRuntime {
     };
   }
 
+  /** 收口已验收但未落印时补封印，并保证有可上场的运行规格 */
+  prepareEnterPlay(): void {
+    if (
+      this.hasAcceptedCloser() &&
+      !this.session.slots[SLOT_CREATION_SEALED_BY_OPENING]
+    ) {
+      this.sealCreationOpening();
+      return;
+    }
+    if (
+      this.session.slots[SLOT_CREATION_SEALED_BY_OPENING] ||
+      this.session.slots.designInstanceReady
+    ) {
+      this.ensurePlaySpecReady();
+    }
+  }
+
   getAvailableSkills(): SkillIndexEntry[] {
     return this.availableSkills;
   }
@@ -1402,10 +1419,6 @@ export class PhaseRuntime {
    * 验收后回到分层图：点节点即确认并进入，底栏写意见再发即改编排。
    */
   private async awaitCreationStepPick(): Promise<void> {
-    if (this.session.slots[SLOT_CREATION_SEALED_BY_OPENING]) {
-      this.onMessage(CREATION_SEALED_WAITING_MESSAGE);
-      return;
-    }
     this.syncSlotsToBlackboard(this.session);
     const flow = parseCreationFlow(
       this.blackboard.getContentByTag(CREATION_FLOW_TAG),
@@ -1474,7 +1487,7 @@ export class PhaseRuntime {
   }
 
   /**
-   * 选定开场白后：把候选落成 输出.开场白 / 初值表，关闭 DAG。
+   * 选定开场白后：把候选落成 输出.开场白 / 初值表。不关 DAG，创作流程继续。
    */
   private sealCreationOpening(): void {
     const selectedRaw = this.session.slots[SLOT_OPENING_SELECTED_INDEX];
@@ -1515,17 +1528,6 @@ export class PhaseRuntime {
       }
     }
 
-    const closed = closeCreationFlowRaw(
-      this.blackboard.getContentByTag(CREATION_FLOW_TAG),
-    );
-    if (closed) {
-      this.blackboard.write({
-        tag: CREATION_FLOW_TAG,
-        content: closed,
-        source: "runtime",
-      });
-    }
-
     const n = payload?.candidates.length ?? (openingText ? 1 : 0);
     const which =
       n > 1 && payload
@@ -1534,7 +1536,7 @@ export class PhaseRuntime {
           ? "开场白"
           : "开场";
     this.onMessage(
-      `[创作收口] 已选定${which}，工作流计划已关闭。可切换到「游玩」。`,
+      `[创作] 已选定${which}。可保存为产物后开玩，或继续补节点。`,
     );
 
     this.session = {
@@ -1542,10 +1544,37 @@ export class PhaseRuntime {
       slots: {
         ...this.session.slots,
         [SLOT_CREATION_SEALED_BY_OPENING]: true,
-        [CREATION_FLOW_TAG]: closed ?? this.session.slots[CREATION_FLOW_TAG],
         [OPENING_OUTPUT_TAG]: openingText || this.session.slots[OPENING_OUTPUT_TAG],
       },
     };
+    this.ensurePlaySpecReady();
+  }
+
+  private hasAcceptedCloser(): boolean {
+    const flow = parseCreationFlow(
+      this.blackboard.getContentByTag(CREATION_FLOW_TAG),
+    );
+    return hasAcceptedCloserStep(flow, this.readAcceptedStepIds());
+  }
+
+  /** 收口后若还没有运行规格，用草稿或默认槽位补一份，才能进游玩 */
+  private ensurePlaySpecReady(): void {
+    const finalTag = this.blackboard.getContentByTag(WORKER_SET_FINAL_TAG)?.trim();
+    const draft = this.blackboard.getContentByTag(WORKER_SET_DRAFT_TAG)?.trim();
+    if (!finalTag) {
+      const spec = draft?.trim()
+        ? draft
+        : JSON.stringify({ play_slots: defaultPlaySlots() });
+      this.writeWorkerTagContent(WORKER_SET_FINAL_TAG, spec, "opening-setup");
+    }
+    if (this.session.slots.designInstanceReady) return;
+    this.session = {
+      ...this.session,
+      slots: {
+        ...this.session.slots,
+        designInstanceReady: true,
+      },
+    };
   }
 
   /** 再编排：解开开场收口，让 design-flow 能在收口前插入节点 */
@@ -2667,7 +2696,6 @@ export class PhaseRuntime {
   /** invoke_main_agent 副作用：running 时调用总管 LLM，链式推进直到需用户介入 */
   private async maybeRunMainAgent(effects: PhaseEffect[]): Promise<void> {
     if (inferLifecycleStage(this.session) === "play") return;
-    if (this.session.slots[SLOT_CREATION_SEALED_BY_OPENING]) return;
     if (this.mainAgent && effects.some((e) => e.type === "invoke_main_agent")) {
       await this.runMainAgent();
     }

src/server/agent-view.ts

@@ -400,8 +400,8 @@ export function buildFocus(
       actorType: "user",
       actorLabel: "你",
       action:
-        reason.message && /创作已收口/.test(reason.message)
-          ? "创作已收口"
+        reason.message && /创作已收口|可保存为产物/.test(reason.message)
+          ? "可保存产物"
           : "补充说明",
       detail: reason.message?.slice(0, 120),
     };

src/server/book-handlers.ts

@@ -395,7 +395,17 @@ export async function handleBooksApi(
       return true;
     }
     try {
-      const session = await sessionManager.startNewPlayRun(active.id);
+      let instanceId: string | undefined;
+      try {
+        const raw = await readBody(req);
+        if (raw.trim()) {
+          const body = JSON.parse(raw) as { instanceId?: string };
+          instanceId = body.instanceId?.trim() || undefined;
+        }
+      } catch {
+        instanceId = undefined;
+      }
+      const session = await sessionManager.startNewPlayRun(active.id, instanceId);
       json(res, 200, { session });
     } catch (err) {
       json(res, 400, {
@@ -420,7 +430,11 @@ export async function handleBooksApi(
           ...s,
           kindLabel: s.kind === "instance" ? "创作定稿" : "游玩进度",
         }));
-        json(res, 200, { saves });
+        json(res, 200, {
+          saves,
+          playWorkingInstanceId:
+            sessionManager.playWorkingInstanceId(bookId) ?? null,
+        });
       } catch (err) {
         json(res, 400, {
           error: err instanceof Error ? err.message : "读取存档失败",
@@ -490,6 +504,28 @@ export async function handleBooksApi(
       return true;
     }
 
+    if ((req.method === "PATCH" || req.method === "PUT") && !isLoad) {
+      const body = JSON.parse(await readBody(req)) as { label?: string };
+      try {
+        const save = sessionManager.renameGameSnapshot(
+          bookId,
+          saveId,
+          body.label ?? "",
+        );
+        json(res, 200, {
+          save: {
+            ...save,
+            kindLabel: save.kind === "instance" ? "创作定稿" : "游玩进度",
+          },
+        });
+      } catch (err) {
+        json(res, 400, {
+          error: err instanceof Error ? err.message : "重命名失败",
+        });
+      }
+      return true;
+    }
+
     if (req.method === "DELETE") {
       try {
         sessionManager.deleteGameSnapshot(bookId, saveId);

src/server/session-manager.ts

@@ -11,14 +11,13 @@ import type { RunSnapshot, RunSnapshotMeta, SnapshotKind } from "../types/run-sn
 import { toRunSnapshotMeta } from "../types/run-snapshot.js";
 import { materializeInstanceSnapshotPayload } from "../book/snapshot-filters.js";
 import {
-  CREATION_SEALED_WAITING_MESSAGE,
   INSTANCE_OPENING_SNAPSHOT_LABEL,
   OPENING_OUTPUT_TAG,
-  SLOT_CREATION_SEALED_BY_OPENING,
 } from "../skills/opening-seal.js";
 import {
   PLAY_WORKING_SNAPSHOT_ID,
   PLAY_WORKING_SNAPSHOT_LABEL,
+  SLOT_PLAY_INSTANCE_ID,
   SLOT_PLAY_LAYER_ACTIVE,
   isPlayLayerActive,
 } from "../skills/play-turn.js";
@@ -209,6 +208,10 @@ export type SessionView = {
   /** 已从定稿开出聊天层（不是只把顶栏标成游玩） */
   playLayerActive: boolean;
   playReady: boolean;
+  /** 已落档至少一份产物（instance 快照） */
+  hasProduct: boolean;
+  /** 当前游玩所依据的产物 id */
+  playInstanceId?: string;
   skillCatalog: SkillCatalogEntry[];
   toolTrace: ToolTraceEntry[];
   burst: BurstState;
@@ -371,11 +374,11 @@ export class SessionManager {
 
   setLifecycleStage(sessionId: string, stage: LifecycleStage): SessionView {
     const s = this.require(sessionId);
-    const session = s.runtime.getSession();
-    if (stage === "play" && !canEnterPlay(session)) {
-      throw new Error("实例尚未就绪，无法进入游玩");
-    }
     if (stage === "play") {
+      s.runtime.prepareEnterPlay();
+      if (!canEnterPlay(s.runtime.getSession())) {
+        throw new Error("实例尚未就绪，无法进入游玩");
+      }
       this.enterPlayLayer(s, { resume: true });
     } else {
       this.enterDesignLayer(s);
@@ -609,8 +612,11 @@ export class SessionManager {
     let blackboardItems = s.runtime.getBlackboard().exportItems();
 
     if (kind === "instance") {
-      if (!canEnterPlay(runtimeSession) && !runtimeSession.slots.startupCompleted) {
-        throw new Error("须先验收 Worker 集，才能保存创作定稿");
+      s.runtime.prepareEnterPlay();
+      runtimeSession = structuredClone(s.runtime.getSession());
+      blackboardItems = s.runtime.getBlackboard().exportItems();
+      if (!canEnterPlay(runtimeSession)) {
+        throw new Error("须先完成收口或验收 Worker 集，才能保存产物");
       }
       ({ runtimeSession, blackboardItems } = materializeInstanceSnapshotPayload({
         runtimeSession,
@@ -626,6 +632,8 @@ export class SessionManager {
       bookId: s.bookId,
       label: trimmed,
       kind,
+      instanceId:
+        kind === "run" ? this.currentPlayInstanceId(s) : undefined,
       orchestratorId: skillPackId,
       runtimeSession,
       blackboardItems,
@@ -665,25 +673,30 @@ export class SessionManager {
     return this.saveGameSnapshot(sessionId, label, "run", note);
   }
 
-  /** 从已验收实例开一条新的游玩线（清空 run 层状态） */
-  async startNewPlayRun(sessionId: string): Promise<SessionView> {
+  /** 从已落档产物开一条新的游玩线（清空 run 层状态） */
+  async startNewPlayRun(
+    sessionId: string,
+    instanceId?: string,
+  ): Promise<SessionView> {
     const s = this.require(sessionId);
     if (!s.bookId) throw new Error("仅绑定作品时可新建游玩");
-    const session = s.runtime.getSession();
-    if (!canEnterPlay(session)) {
-      throw new Error("须先验收 Worker 集，才能开始游玩");
+    this.persistCreationIfDesign(s);
+    s.runtime.prepareEnterPlay();
+    if (!canEnterPlay(s.runtime.getSession())) {
+      throw new Error("须先验收 Worker 集或完成收口，才能开始游玩");
     }
     this.archivePlayWorking(s.bookId);
-    this.enterPlayLayer(s, { resume: false });
-    this.persist(s);
+    this.enterPlayLayer(s, { resume: false, instanceId });
     return this.toView(sessionId);
   }
 
-  /** 进入游玩层：resume 时恢复「当前游玩」，否则从定稿新开一条聊天 */
+  /** 进入游玩层：resume 时恢复「当前游玩」，否则从产物新开一条聊天 */
   private enterPlayLayer(
     s: ManagedSession,
-    opts: { resume: boolean },
+    opts: { resume: boolean; instanceId?: string },
   ): void {
+    this.persistCreationIfDesign(s);
+    s.runtime.prepareEnterPlay();
     const session = s.runtime.getSession();
     if (!canEnterPlay(session)) {
       throw new Error("实例尚未就绪，无法进入游玩");
@@ -704,11 +717,11 @@ export class SessionManager {
         return;
       }
     }
-    this.beginNewPlayFromInstance(s);
+    this.beginNewPlayFromInstance(s, opts.instanceId);
     if (s.bookId) this.savePlayWorking(s);
   }
 
-  /** 回到创作层：先把当前聊天写入「当前游玩」，再加载定稿 */
+  /** 回到创作层：先把当前聊天写入「当前游玩」，再恢复创作过程 */
   private enterDesignLayer(s: ManagedSession): void {
     const session = s.runtime.getSession();
     if (
@@ -721,33 +734,18 @@ export class SessionManager {
     if (s.bookId && isPlayLayerActive(session.slots)) {
       this.savePlayWorking(s);
     }
-    const instance = s.bookId ? this.latestInstanceSnapshot(s.bookId) : null;
-    if (instance) {
-      this.restoreSnapshotInPlace(s, instance, "design");
-      return;
-    }
-    let runtimeSession = structuredClone(s.runtime.getSession());
-    let blackboardItems = s.runtime.getBlackboard().exportItems();
-    ({ runtimeSession, blackboardItems } = materializeInstanceSnapshotPayload({
-      runtimeSession,
-      blackboardItems,
-    }));
-    runtimeSession.id = session.id;
-    runtimeSession.slots = {
-      ...runtimeSession.slots,
-      uiLifecycleStage: "design",
-      [SLOT_PLAY_LAYER_ACTIVE]: undefined,
-    };
-    runtimeSession.phase = "waiting_user";
-    runtimeSession.waitingReason = { kind: "input" };
-    s.runtime.restoreFromCheckpoint(runtimeSession, blackboardItems);
+    this.restoreCreationFromDisk(s);
   }
 
-  private beginNewPlayFromInstance(s: ManagedSession): void {
+  private beginNewPlayFromInstance(s: ManagedSession, instanceId?: string): void {
     const keepId = s.runtime.getSession().id;
     let runtimeSession: RuntimeSession;
     let blackboardItems: import("../types/blackboard.js").BlackboardItem[];
-    const instance = s.bookId ? this.latestInstanceSnapshot(s.bookId) : null;
+    const instance = s.bookId
+      ? instanceId
+        ? this.loadInstanceSnapshot(s.bookId, instanceId)
+        : this.latestInstanceSnapshot(s.bookId)
+      : null;
     if (instance) {
       runtimeSession = structuredClone(instance.runtimeSession);
       blackboardItems = structuredClone(instance.blackboardItems);
@@ -764,6 +762,7 @@ export class SessionManager {
       ...runtimeSession.slots,
       uiLifecycleStage: "play",
       [SLOT_PLAY_LAYER_ACTIVE]: true,
+      [SLOT_PLAY_INSTANCE_ID]: instance?.id,
       startupCompleted: true,
     };
     runtimeSession.phase = "waiting_user";
@@ -807,6 +806,13 @@ export class SessionManager {
       ...runtimeSession.slots,
       uiLifecycleStage: layer,
       [SLOT_PLAY_LAYER_ACTIVE]: layer === "play" ? true : undefined,
+      [SLOT_PLAY_INSTANCE_ID]:
+        layer === "play"
+          ? snapshot.instanceId ||
+            (typeof runtimeSession.slots[SLOT_PLAY_INSTANCE_ID] === "string"
+              ? runtimeSession.slots[SLOT_PLAY_INSTANCE_ID]
+              : undefined)
+          : undefined,
       startupCompleted: true,
     };
     if (layer === "play") {
@@ -817,12 +823,12 @@ export class SessionManager {
         runtimeSession.waitingReason = { kind: "input" };
       }
     } else {
-      const sealed = Boolean(runtimeSession.slots[SLOT_CREATION_SEALED_BY_OPENING]);
-      runtimeSession.phase = "waiting_user";
-      runtimeSession.waitingReason = {
-        kind: "input",
-        ...(sealed ? { message: CREATION_SEALED_WAITING_MESSAGE } : {}),
-      };
+      if (runtimeSession.phase === "done") {
+        runtimeSession.phase = "waiting_user";
+      }
+      if (!runtimeSession.waitingReason) {
+        runtimeSession.waitingReason = { kind: "input" };
+      }
       runtimeSession.pendingArtifactId = undefined;
       runtimeSession.pendingDecision = undefined;
       runtimeSession.currentWorkerId = undefined;
@@ -868,6 +874,7 @@ export class SessionManager {
       bookId: s.bookId,
       label: PLAY_WORKING_SNAPSHOT_LABEL,
       kind: "run",
+      instanceId: this.currentPlayInstanceId(s),
       orchestratorId:
         sessionSkillPackId(runtimeSession) ??
         (book ? bookSkillPackId(book) : "") ??
@@ -909,19 +916,91 @@ export class SessionManager {
         s.runtime.getSession().id,
         INSTANCE_OPENING_SNAPSHOT_LABEL,
         "instance",
-        "进入游玩前自动保存定稿",
+        "开玩前自动保存产物",
       );
     } catch (err) {
-      console.warn("[会话] 进入游玩前保存定稿失败", err);
+      console.warn("[会话] 开玩前保存产物失败", err);
     }
   }
 
+  private currentPlayInstanceId(s: ManagedSession): string | undefined {
+    const raw = s.runtime.getSession().slots[SLOT_PLAY_INSTANCE_ID];
+    if (typeof raw === "string" && raw.trim()) return raw.trim();
+    if (!s.bookId) return undefined;
+    return this.latestInstanceSnapshot(s.bookId)?.id;
+  }
+
+  playWorkingInstanceId(bookId: string): string | undefined {
+    const working = loadRunSnapshotFile(bookId, PLAY_WORKING_SNAPSHOT_ID);
+    if (!working || working.kind !== "run") return undefined;
+    return working.instanceId;
+  }
+
+  renameGameSnapshot(
+    bookId: string,
+    snapshotId: string,
+    label: string,
+  ): RunSnapshotMeta {
+    if (!getBook(bookId)) throw new Error("Book 不存在");
+    const trimmed = label.trim();
+    if (!trimmed) throw new Error("名称不能为空");
+    const snapshot = loadRunSnapshotFile(bookId, snapshotId);
+    if (!snapshot) throw new Error("存档不存在");
+    const next: RunSnapshot = { ...snapshot, label: trimmed };
+    saveRunSnapshotFile(next);
+    return toRunSnapshotMeta(next);
+  }
+
   private latestInstanceSnapshot(bookId: string): RunSnapshot | null {
     const meta = this.listGameSnapshots(bookId).find((s) => s.kind === "instance");
     if (!meta) return null;
     return loadRunSnapshotFile(bookId, meta.id);
   }
 
+  private loadInstanceSnapshot(bookId: string, snapshotId: string): RunSnapshot {
+    const snapshot = loadRunSnapshotFile(bookId, snapshotId);
+    if (!snapshot) throw new Error("产物不存在");
+    if (snapshot.kind !== "instance") throw new Error("该存档不是产物定稿");
+    return snapshot;
+  }
+
+  private restoreCreationFromDisk(s: ManagedSession): void {
+    const keepId = s.runtime.getSession().id;
+    if (!s.bookId) {
+      this.clearPlayLayerOnSession(s, keepId);
+      return;
+    }
+    const snap = loadBookSession(s.bookId);
+    if (!snap?.runtimeSession) {
+      this.clearPlayLayerOnSession(s, keepId);
+      return;
+    }
+    const runtimeSession = structuredClone(snap.runtimeSession);
+    runtimeSession.id = keepId;
+    runtimeSession.slots = {
+      ...runtimeSession.slots,
+      uiLifecycleStage: "design",
+      [SLOT_PLAY_LAYER_ACTIVE]: undefined,
+    };
+    s.runtime.restoreFromCheckpoint(runtimeSession, snap.blackboardItems);
+    s.messages = snap.messages.map((m) => ({ ...m })) as ChatMessage[];
+    s.branchState = this.deserializeBranchState(snap.messageBranchState);
+  }
+
+  private clearPlayLayerOnSession(s: ManagedSession, keepId: string): void {
+    const runtimeSession = structuredClone(s.runtime.getSession());
+    runtimeSession.id = keepId;
+    runtimeSession.slots = {
+      ...runtimeSession.slots,
+      uiLifecycleStage: "design",
+      [SLOT_PLAY_LAYER_ACTIVE]: undefined,
+    };
+    s.runtime.restoreFromCheckpoint(
+      runtimeSession,
+      s.runtime.getBlackboard().exportItems(),
+    );
+  }
+
   private playOpeningMessage(text: string): ChatMessage {
     return {
       id: randomUUID(),
@@ -935,7 +1014,7 @@ export class SessionManager {
     };
   }
 
-  /** 从存档读档：替换当前作品进度，可继续创作 */
+  /** 读档：产物开玩，游玩存档续玩。不覆盖创作过程。 */
   async loadGameSnapshot(bookId: string, snapshotId: string): Promise<SessionView> {
     const snapshot = loadRunSnapshotFile(bookId, snapshotId);
     if (!snapshot) throw new Error("存档不存在");
@@ -946,47 +1025,36 @@ export class SessionManager {
       throw new Error("存档与当前作品 skill 包不匹配，无法读档");
     }
 
-    this.dropBookSessions(bookId);
-
-    const newSessionId = randomUUID();
-    const messages: ChatMessage[] = snapshot.messages.map((m) => ({ ...m })) as ChatMessage[];
-    let runtimeSession = structuredClone(snapshot.runtimeSession);
-    let blackboardItems = snapshot.blackboardItems;
+    let sessionId = this.activeBookSessions.get(bookId);
+    if (!sessionId) {
+      await this.openBook(bookId);
+      sessionId = this.activeBookSessions.get(bookId);
+    }
+    if (!sessionId) throw new Error("无法打开作品");
+    const s = this.require(sessionId);
 
     if (snapshot.kind === "instance") {
-      ({ runtimeSession, blackboardItems } = materializeInstanceSnapshotPayload({
-        runtimeSession,
-        blackboardItems,
-      }));
-      runtimeSession.slots = {
-        ...runtimeSession.slots,
-        uiLifecycleStage: "design",
-        [SLOT_PLAY_LAYER_ACTIVE]: undefined,
-      };
-    } else {
-      runtimeSession.slots = {
-        ...runtimeSession.slots,
-        uiLifecycleStage: "play",
-        [SLOT_PLAY_LAYER_ACTIVE]: true,
-      };
+      this.persistCreationIfDesign(s);
+      if (isPlayLayerActive(s.runtime.getSession().slots)) {
+        this.archivePlayWorking(bookId);
+      }
+      this.beginNewPlayFromInstance(s, snapshot.id);
+      this.savePlayWorking(s);
+      return this.toView(
+        sessionId,
+        true,
+        `已用产物「${snapshot.label}」开玩。创作流程仍在「创作」里。`,
+      );
     }
 
-    runtimeSession.id = newSessionId;
-
-    const resumeHint =
-      snapshot.kind === "instance"
-        ? `已加载实例「${snapshot.label}」。可开始运行，或调整角色设定后再模拟。`
-        : `已从存档「${snapshot.label}」读档，可继续创作。`;
-
-    return this.mountRestoredSession({
-      sessionId: newSessionId,
-      bookId,
-      skillPackId: runSnapshotSkillPackId(snapshot) ?? "",
-      runtimeSession,
-      blackboardItems,
-      messages,
-      resumeHint,
-    });
+    this.persistCreationIfDesign(s);
+    this.restoreSnapshotInPlace(s, snapshot, "play");
+    this.savePlayWorking(s);
+    return this.toView(
+      sessionId,
+      true,
+      `已从存档「${snapshot.label}」继续游玩。`,
+    );
   }
 
   /** 删除单个存档 */
@@ -1438,9 +1506,6 @@ export class SessionManager {
       ? s.runtime.getSession().artifacts.find((a) => a.id === pendingId)
       : undefined;
     const stageBefore = inferLifecycleStage(s.runtime.getSession());
-    const sealedBefore = Boolean(
-      s.runtime.getSession().slots[SLOT_CREATION_SEALED_BY_OPENING],
-    );
     try {
       const owned = await this.runExclusive(id, s, () =>
         s.runtime.acceptArtifact(undefined, opts),
@@ -1468,8 +1533,6 @@ export class SessionManager {
       }
     }
     this.persist(s);
-    this.maybeSaveOpeningInstance(s, sealedBefore);
-    this.persist(s);
     return this.toView(id);
   }
 
@@ -1862,43 +1925,32 @@ export class SessionManager {
     }
   }
 
-  /** 选定开场后正式保存一份 instance 定稿（可进游玩的规格+开局） */
-  private maybeSaveOpeningInstance(
-    s: ManagedSession,
-    sealedBefore: boolean,
-  ): void {
-    if (sealedBefore) return;
+  /** 游玩中只更新工作副本，不覆盖创作过程 */
+  private persist(s: ManagedSession): void {
     if (!s.bookId) return;
+    const book = getBook(s.bookId);
+    if (!book) return;
     const session = s.runtime.getSession();
-    if (!session.slots[SLOT_CREATION_SEALED_BY_OPENING]) return;
-    if (!canEnterPlay(session)) {
-      s.messages.push(
-        this.msg(
-          "system",
-          "[创作收口] 开场已选定，但 Worker 集尚未验收，未写入创作定稿存档。",
-        ),
-      );
+    if (
+      isPlayLayerActive(session.slots) ||
+      inferLifecycleStage(session) === "play"
+    ) {
+      this.savePlayWorking(s);
+      this.syncBookSkill(s.bookId, session);
+      updateBook(s.bookId, { activeSessionId: session.id });
       return;
     }
-    try {
-      const meta = this.saveGameSnapshot(
-        session.id,
-        INSTANCE_OPENING_SNAPSHOT_LABEL,
-        "instance",
-        "选定开场后自动保存",
-      );
-      s.messages.push(
-        this.msg("system", `[创作收口] 已保存创作定稿「${meta.label}」。`),
-      );
-    } catch (err) {
-      const detail = err instanceof Error ? err.message : String(err);
-      s.messages.push(
-        this.msg("system", `[创作收口] 开场已选定，定稿存档未写入：${detail}`),
-      );
-    }
+    this.writeBookSession(s);
   }
 
-  private persist(s: ManagedSession): void {
+  /** 切到游玩前把当前创作过程写入 session.json */
+  private persistCreationIfDesign(s: ManagedSession): void {
+    if (!s.bookId) return;
+    if (isPlayLayerActive(s.runtime.getSession().slots)) return;
+    this.writeBookSession(s);
+  }
+
+  private writeBookSession(s: ManagedSession): void {
     if (!s.bookId) return;
     const book = getBook(s.bookId);
     if (!book) return;
@@ -2545,6 +2597,13 @@ export class SessionManager {
       lifecycleStage,
       playLayerActive: isPlayLayerActive(session.slots),
       playReady: canEnterPlay(session),
+      hasProduct: Boolean(
+        s.bookId &&
+          this.listGameSnapshots(s.bookId).some((item) => item.kind === "instance"),
+      ),
+      playInstanceId: isPlayLayerActive(session.slots)
+        ? this.currentPlayInstanceId(s)
+        : undefined,
       skillCatalog,
       toolTrace: buildToolTrace(messages),
       burst: buildBurstState(messages, session),

src/server/skill-catalog.ts

@@ -177,7 +177,7 @@ function buildWorldSimulatorCatalog(
     id: "declare-ready",
     stage: "design",
     label: "实例就绪",
-    purpose: "Worker 集已 accept 即可进游玩；若走了开场白终节点，选定后会自动保存定稿。",
+    purpose: "收口或 Worker 集验收后可保存产物；产物可单独开玩。",
     status: hasAcceptedWorkerSet(session) ? "done" : "pending",
   });
 

src/skills/creation-flow.ts

@@ -2292,7 +2292,23 @@ export function isCloserModule(
   name?: string,
 ): boolean {
   if (module?.closer === true) return true;
-  return (name ?? "").trim() === "开场白与开场变量";
+  const t = (name ?? "").trim();
+  return t === "开场白与开场变量" || t.startsWith("开场白与开场变量#") || t === "开场白";
+}
+
+export function hasAcceptedCloserStep(
+  flow: CreationFlow | null | undefined,
+  acceptedStepIds: readonly string[],
+  catalog?: ModuleCatalog | null,
+): boolean {
+  if (flow?.steps.length) {
+    return flow.steps.some(
+      (s) =>
+        isCloserModule(findModuleByName(catalog, s.name), s.name) &&
+        isStepAccepted(s, acceptedStepIds),
+    );
+  }
+  return acceptedStepIds.some((id) => isCloserModule(null, id));
 }
 
 export function findCloserStepIndex(

src/skills/opening-seal.ts

@@ -1,5 +1,5 @@
 /**
- * 开场白终节点：选定后落库、关 DAG。
+ * 开场白终节点：选定后落库开场。不关 DAG；产物靠用户「保存」拆出。
  * 能力 `opening-setup` 与磁盘 worker `opening-generator` 共用这条收口。
  */
 import {
@@ -22,21 +22,34 @@ export const SLOT_CREATION_SEALED_BY_OPENING = "creationSealedByOpening";
 export const SLOT_OPENING_SELECTED_INDEX = "openingSelectedIndex";
 
 export const CREATION_SEALED_WAITING_MESSAGE =
-  "开场已选定，创作已收口并保存。可切换到「游玩」。";
+  "开场已选定。可保存为产物后开玩，或继续补节点。";
 
-export const INSTANCE_OPENING_SNAPSHOT_LABEL = "创作定稿（开场）";
+export const INSTANCE_OPENING_SNAPSHOT_LABEL = "定稿";
 
 export function isOpeningLockTag(tag: string): boolean {
   const t = tag.trim();
   return t === OPENING_OUTPUT_TAG || t === OPENING_INITIAL_VARS_TAG;
 }
 
+/** 收口步 id / name（含「开场白与开场变量#2」） */
+export function isCloserStepRef(id: string | undefined): boolean {
+  const t = (id ?? "").trim();
+  if (!t) return false;
+  return (
+    t === "开场白与开场变量" ||
+    t.startsWith("开场白与开场变量#") ||
+    t === "开场白"
+  );
+}
+
 export function isOpeningSealArtifact(artifact: {
   workerId?: string;
+  stepId?: string;
   outputTags?: readonly string[];
 }): boolean {
   if ((artifact.workerId ?? "").trim() === "opening-generator") return true;
-  return (artifact.outputTags ?? []).includes(OPENING_SETUP_ARTIFACT_TAG);
+  if ((artifact.outputTags ?? []).includes(OPENING_SETUP_ARTIFACT_TAG)) return true;
+  return isCloserStepRef(artifact.stepId);
 }
 
 export type OpeningVariable = {

src/skills/play-turn.ts

@@ -5,6 +5,8 @@
  */
 export const SLOT_PLAY_TURN_QUEUE = "playTurnQueue";
 export const SLOT_PLAY_LAYER_ACTIVE = "playLayerActive";
+/** 当前游玩线所依据的产物 snapshot id */
+export const SLOT_PLAY_INSTANCE_ID = "playInstanceId";
 
 export const PLAY_WORKING_SNAPSHOT_ID = "play-working";
 export const PLAY_WORKING_SNAPSHOT_LABEL = "当前游玩";

src/skills/worker-declaration.ts

@@ -1,6 +1,14 @@
 import type { Blackboard } from "../blackboard/blackboard.js";
 import type { RuntimeSession } from "../types/runtime.js";
 import { isPlayLayerActive } from "./play-turn.js";
+import {
+  SLOT_CREATION_ACCEPTED_UNITS,
+  parseAcceptedUnits,
+} from "./creation-units.js";
+import {
+  isCloserStepRef,
+  SLOT_CREATION_SEALED_BY_OPENING,
+} from "./opening-seal.js";
 import {
   deriveDesignStageScope,
   deriveOnDemandWorkerScope,
@@ -41,8 +49,14 @@ export function hasAcceptedWorkerSet(session: RuntimeSession): boolean {
   );
 }
 
+function hasAcceptedCloser(session: RuntimeSession): boolean {
+  if (Boolean(session.slots[SLOT_CREATION_SEALED_BY_OPENING])) return true;
+  const accepted = parseAcceptedUnits(session.slots[SLOT_CREATION_ACCEPTED_UNITS]);
+  return accepted.some((id) => isCloserStepRef(id));
+}
+
 export function canEnterPlay(session: RuntimeSession): boolean {
-  return hasAcceptedWorkerSet(session);
+  return hasAcceptedWorkerSet(session) || hasAcceptedCloser(session);
 }
 
 export function inferLifecycleStage(session: RuntimeSession): LifecycleStage {

src/types/run-snapshot.ts

@@ -16,6 +16,8 @@ export type RunSnapshot = {
   bookId: string;
   label: string;
   kind: SnapshotKind;
+  /** 游玩存档所属的产物（instance）id */
+  instanceId?: string;
   /** skill 包 id（兼容旧字段名） */
   orchestratorId?: string;
   runtimeSession: RuntimeSession;
@@ -32,6 +34,8 @@ export type RunSnapshotMeta = {
   bookId: string;
   label: string;
   kind: SnapshotKind;
+  /** 游玩存档所属的产物（instance）id */
+  instanceId?: string;
   /** skill 包 id（兼容旧字段名） */
   orchestratorId?: string;
   createdAt: string;
@@ -44,6 +48,7 @@ export function toRunSnapshotMeta(snapshot: RunSnapshot): RunSnapshotMeta {
     bookId: snapshot.bookId,
     label: snapshot.label,
     kind: snapshot.kind,
+    instanceId: snapshot.instanceId,
     orchestratorId: snapshot.orchestratorId,
     createdAt: snapshot.createdAt,
     note: snapshot.note,

tests/creation-flow.test.ts

@@ -25,6 +25,7 @@ import {
   spawnRepeatableCreationStep,
   spawnInstanceFromPrototype,
   hasSelectableCreationWork,
+  hasAcceptedCloserStep,
   removeUnstartedInstance,
   looksLikeCreationFlowDoc,
   parseCreationFlow,
@@ -1269,4 +1270,21 @@ modules:
     if ("error" in ok) return;
     expect(ok.step.depends_on).toEqual(["生成规则#1"]);
   });
+
+  it("detects accepted closer step", () => {
+    const flow = parseCreationFlow(
+      JSON.stringify({
+        steps: [
+          {
+            id: "开场白与开场变量",
+            name: "开场白与开场变量",
+            depends_on: [],
+          },
+        ],
+      }),
+    );
+    expect(hasAcceptedCloserStep(flow, [])).toBe(false);
+    expect(hasAcceptedCloserStep(flow, ["开场白与开场变量"])).toBe(true);
+    expect(hasAcceptedCloserStep(null, ["开场白与开场变量"])).toBe(true);
+  });
 });

tests/opening-seal.test.ts

@@ -37,6 +37,13 @@ describe("opening-seal", () => {
         outputTags: ["输出.开场白"],
       }),
     ).toBe(true);
+    expect(
+      isOpeningSealArtifact({
+        workerId: "design-step",
+        stepId: "开场白与开场变量",
+        outputTags: ["artifact.flat.v1"],
+      }),
+    ).toBe(true);
     expect(
       isOpeningSealArtifact({
         workerId: "design-step",

tests/phase-machine.test.ts

@@ -422,7 +422,7 @@ describe("phase machine", () => {
     ]);
   });
 
-  it("accepting opening-setup seals creation instead of next_intent", () => {
+  it("accepting opening-setup materializes opening then returns to the graph", () => {
     let session = createSession("default");
     const artifact = createArtifact({
       workerId: "design-step",
@@ -441,17 +441,17 @@ describe("phase machine", () => {
       type: "user_accepted_artifact",
       payload: { artifactId: artifact.id },
     });
-    expect(accepted.session.waitingReason?.kind).toBe("input");
-    expect(accepted.session.waitingReason).toMatchObject({
-      kind: "input",
-    });
-    expect(accepted.effects).toEqual([{ type: "seal_creation_opening" }]);
+    expect(accepted.session.phase).toBe("running");
+    expect(accepted.effects).toEqual([
+      { type: "seal_creation_opening" },
+      { type: "propose_next_creation_step" },
+    ]);
     expect(
       accepted.effects.some((e) => e.type === "invoke_main_agent"),
     ).toBe(false);
   });
 
-  it("accepting opening-generator also seals creation", () => {
+  it("accepting opening-generator also materializes opening then returns to the graph", () => {
     let session = createSession("default");
     const artifact = createArtifact({
       workerId: "opening-generator",
@@ -469,11 +469,14 @@ describe("phase machine", () => {
       type: "user_accepted_artifact",
       payload: { artifactId: artifact.id },
     });
-    expect(accepted.session.waitingReason?.kind).toBe("input");
-    expect(accepted.effects).toEqual([{ type: "seal_creation_opening" }]);
+    expect(accepted.session.phase).toBe("running");
+    expect(accepted.effects).toEqual([
+      { type: "seal_creation_opening" },
+      { type: "propose_next_creation_step" },
+    ]);
   });
 
-  it("sealed creation still blocks input until play", () => {
+  it("sealed creation still lets the user keep designing", () => {
     let session = createSession("default");
     session = {
       ...session,
@@ -481,14 +484,13 @@ describe("phase machine", () => {
       waitingReason: { kind: "input" },
       slots: { creationSealedByOpening: true, designInstanceReady: true },
     };
-    const blocked = applyEvent(session, {
+    const continued = applyEvent(session, {
       type: "user_submitted_input",
-      payload: { text: "我买金首饰" },
+      payload: { text: "再补一个 NPC" },
     });
-    expect(blocked.effects).toEqual([
-      { type: "emit_message", message: "创作已收口并保存。请切换到「游玩」开始。" },
-    ]);
-    expect(blocked.effects.some((e) => e.type === "run_play_turn")).toBe(false);
+    expect(continued.session.phase).toBe("running");
+    expect(continued.effects).toEqual([{ type: "invoke_main_agent" }]);
+    expect(continued.effects.some((e) => e.type === "run_play_turn")).toBe(false);
   });
 
   it("play input starts a play turn even after opening seal", () => {

tests/phase-runtime.test.ts

@@ -293,4 +293,43 @@ describe("phase runtime", () => {
       flow?.steps.find((s) => s.name === "开场白与开场变量")?.depends_on,
     ).toEqual(["美学纲领与交互范式"]);
   });
+
+  it("prepareEnterPlay seals when closer is already accepted", () => {
+    const session = createSession("default");
+    const blackboard = new Blackboard();
+    blackboard.write({
+      tag: "设计.创作流程",
+      content: JSON.stringify({
+        status: "open",
+        steps: [
+          {
+            id: "开场白与开场变量",
+            name: "开场白与开场变量",
+            depends_on: [],
+          },
+        ],
+      }),
+      source: "runtime",
+    });
+    const runtime = new PhaseRuntime({
+      initialSession: {
+        ...session,
+        slots: {
+          ...session.slots,
+          creationAcceptedUnits: ["开场白与开场变量"],
+        },
+      },
+      initialBlackboardItems: blackboard.exportItems(),
+    });
+    runtime.prepareEnterPlay();
+    expect(runtime.getSession().slots.creationSealedByOpening).toBe(true);
+    expect(runtime.getSession().slots.designInstanceReady).toBe(true);
+    expect(
+      runtime.getBlackboard().getContentByTag("设计.worker集")?.trim(),
+    ).toBeTruthy();
+    const flow = parseCreationFlow(
+      runtime.getBlackboard().getContentByTag("设计.创作流程"),
+    );
+    expect(flow?.status).not.toBe("closed");
+  });
 });

tests/run-snapshot.test.ts

@@ -64,6 +64,20 @@ describe("run snapshot store", () => {
     expect(loaded!.note).toBe("测试快照");
   });
 
+  it("stores instanceId on run snapshots and lists it", async () => {
+    const { saveRunSnapshot, loadRunSnapshot, listRunSnapshots } = await import(
+      "../src/book/run-snapshot-store.js"
+    );
+    const bookId = randomUUID();
+    const instanceId = randomUUID();
+    const snapshot = makeSnapshot(bookId, "巷战");
+    snapshot.instanceId = instanceId;
+
+    saveRunSnapshot(snapshot);
+    expect(loadRunSnapshot(bookId, snapshot.id)?.instanceId).toBe(instanceId);
+    expect(listRunSnapshots(bookId)[0].instanceId).toBe(instanceId);
+  });
+
   it("listRunSnapshots returns saved items newest first", async () => {
     const { saveRunSnapshot, listRunSnapshots } = await import(
       "../src/book/run-snapshot-store.js"
@@ -156,6 +170,7 @@ describe("run snapshot store", () => {
       runtime: { getSession: () => { slots: Record<string, unknown> }; getBlackboard: () => { write: (i: object) => void } };
     };
     managed.runtime.getSession().slots.startupCompleted = true;
+    managed.runtime.getSession().slots.designInstanceReady = true;
     const bb = managed.runtime.getBlackboard();
     bb.write({ tag: "情境.实验.设定", content: "囚徒困境", source: "worker" });
     bb.write({ tag: "运行.事件流", content: "第1轮", source: "worker" });
@@ -168,6 +183,26 @@ describe("run snapshot store", () => {
     expect(stored.blackboardItems.some((i) => i.tag === "运行.事件流")).toBe(false);
 
     const loaded = await mgr.loadGameSnapshot(book.id, save.id);
-    expect(loaded.hints.some((h) => h.includes("实例"))).toBe(true);
+    expect(loaded.hints.some((h) => h.includes("产物"))).toBe(true);
+  });
+
+  it("renameGameSnapshot updates the label", async () => {
+    const { createBook } = await import("../src/book/store.js");
+    const { SessionManager } = await import("../src/server/session-manager.js");
+    const { loadRunSnapshot } = await import("../src/book/run-snapshot-store.js");
+
+    const book = createBook({ title: "改名测试" });
+    const mgr = new SessionManager();
+    const view = await mgr.createForBook(book.id, "world-simulator");
+    const managed = mgr["require"](view.id) as {
+      runtime: { getSession: () => { slots: Record<string, unknown> } };
+    };
+    managed.runtime.getSession().slots.startupCompleted = true;
+    managed.runtime.getSession().slots.designInstanceReady = true;
+
+    const save = mgr.saveGameSnapshot(view.id, "定稿", "instance");
+    const renamed = mgr.renameGameSnapshot(book.id, save.id, "丧尸街巷");
+    expect(renamed.label).toBe("丧尸街巷");
+    expect(loadRunSnapshot(book.id, save.id)?.label).toBe("丧尸街巷");
   });
 });

tests/worker-declaration.test.ts

@@ -3,6 +3,7 @@ import { Blackboard } from "../src/blackboard/blackboard.js";
 import { createSession } from "../src/runtime/phase-machine.js";
 import {
   buildInstanceWorkerDeclaration,
+  canEnterPlay,
   inferLifecycleStage,
   isWorkerDeclared,
   readWorkerSetYamlForDeclaration,
@@ -108,4 +109,15 @@ describe("worker-declaration", () => {
     };
     expect(inferLifecycleStage(s3)).toBe("play");
   });
+
+  it("closer accepted is enough to enter play", () => {
+    const session = {
+      ...createSession(),
+      slots: {
+        ...createSession().slots,
+        creationAcceptedUnits: ["开场白与开场变量"],
+      },
+    };
+    expect(canEnterPlay(session)).toBe(true);
+  });
 });

web/agent-ui.js

@@ -76,6 +76,34 @@ function isPlayView(view) {
   return Boolean(view?.playLayerActive || view?.lifecycleStage === "play");
 }
 
+/** 开场已选定、创作收口，仍停在创作层等用户保存产物 */
+export function isCreationSealedWaiting(view) {
+  if (!view || isPlayView(view)) return false;
+  const msg = view.waitingReason?.message;
+  return (
+    view.waitingReason?.kind === "input" &&
+    typeof msg === "string" &&
+    /创作已收口|可保存为产物/.test(msg)
+  );
+}
+
+/** 收口节点已验收（图上「已完成」），即使还停在选节点 */
+export function isCreationCloserDone(view) {
+  if (!view || isPlayView(view)) return false;
+  const steps = view.creationFlowView?.steps;
+  if (!Array.isArray(steps)) return false;
+  return steps.some((s) => s?.closer && s.runState === "done");
+}
+
+export function canOfferSaveProduct(view) {
+  return isCreationSealedWaiting(view) || isCreationCloserDone(view);
+}
+
+export function canOfferEnterPlay(view) {
+  if (!view || isPlayView(view)) return false;
+  return canOfferSaveProduct(view) || Boolean(view.hasProduct);
+}
+
 function renderLiveStreamBody(live, view) {
   const thinking = (live?.thinking || view?.agentThinking || "").trim();
   const output = (live?.output ?? "").trim();
@@ -848,16 +876,19 @@ export function renderLifecycle(view) {
   document.body.dataset.lifecycle = stage;
   const toggle = document.getElementById("lifecycle-toggle");
   if (!toggle) return;
+  const ready = Boolean(view?.playReady || view?.hasProduct);
+  toggle.hidden = !ready;
   toggle.querySelectorAll("[data-stage]").forEach((btn) => {
     const s = btn.getAttribute("data-stage");
     btn.classList.toggle("active", s === stage);
     if (s === "play") {
-      btn.disabled = !view.playReady;
-      btn.title = view.playReady
-        ? "进入游玩 / 写作"
-        : "请先验收 Worker 集（创作定稿）后再切换";
+      btn.disabled = !ready;
+      btn.title = ready
+        ? "用已保存的产物开玩"
+        : "请先保存产物后再开玩";
     } else {
       btn.disabled = false;
+      btn.title = "回到创作";
     }
   });
 }
@@ -4312,7 +4343,12 @@ function renderSpeakWorkspace(view) {
   let hint = "在底栏输入你的想法。";
   let guideHtml = "";
 
-  if (wr?.kind === "pick_creation_step" || isFlowPlanReview(view)) {
+  if (canOfferSaveProduct(view)) {
+    title = "可以落档了";
+    hint = view.hasProduct
+      ? "产物已拆出，可开玩；创作流程还在，补节点或再保存一份新定稿。"
+      : "保存后创作流程仍在；拆出的产物可以单独开玩、存档。";
+  } else if (wr?.kind === "pick_creation_step" || isFlowPlanReview(view)) {
     title = "选要做的节点";
     hint = "点可进入的节点即确认并开始；虚线原型点一下增殖再进去。要改排在底栏写意见再发。";
   } else if (showOpening) {
@@ -4350,13 +4386,8 @@ function renderSpeakWorkspace(view) {
       ? proposedOutputCopy(view.proposedNextStep)
       : view.focus?.detail || "确认执行，或在底栏说明意见。";
   } else if (wr?.kind === "input") {
-    if (wr.message && /创作已收口/.test(wr.message)) {
-      title = "创作已收口";
-      hint = wr.message;
-    } else {
-      title = "继续说";
-      hint = view.hints?.[0] || wr.message || "直接输入你的想法或补充。";
-    }
+    title = "继续说";
+    hint = view.hints?.[0] || wr.message || "直接输入你的想法或补充。";
   } else if (view.uiPrompt && !hasUserMessages(view)) {
     title = "描述你想创作什么";
     hint = String(view.uiPrompt).trim().slice(0, 280);
@@ -4377,9 +4408,23 @@ function renderSpeakWorkspace(view) {
           interactive: flowInteractive,
         })
       : "";
+  const enterPlay = canOfferEnterPlay(view)
+    ? `<div class="workspace-intent-actions">
+        ${
+          canOfferSaveProduct(view)
+            ? `<button type="button" class="btn btn-primary" data-save-product>保存定稿</button>`
+            : ""
+        }
+        <button type="button" class="btn${
+          canOfferSaveProduct(view) ? "" : " btn-primary"
+        }" data-enter-play>${view.hasProduct ? "用产物开玩" : "开玩"}</button>
+      </div>`
+    : "";
   return `<section class="workspace-intent">
     <div class="workspace-intent-head">
-      <span class="workspace-surface-kicker">${flowInteractive ? "流程" : "说话"}</span>
+      <span class="workspace-surface-kicker">${
+        canOfferSaveProduct(view) ? "落档" : flowInteractive ? "流程" : "说话"
+      }</span>
       ${leaveStepControlHtml(view)}
     </div>
     <h2 class="workspace-intent-title">${esc(title)}</h2>
@@ -4388,6 +4433,7 @@ function renderSpeakWorkspace(view) {
     ${guideHtml}
     ${intake}
     ${flowHtml}
+    ${enterPlay}
   </section>`;
 }
 
@@ -4586,6 +4632,12 @@ export function renderMessageFeed(view, loading, handlers = {}) {
     stage.innerHTML = renderSpeakWorkspace(view);
     wireCreationFlowGraph(stage, handlers);
     wireLeaveStepControl(stage, handlers);
+    stage.querySelector("[data-enter-play]")?.addEventListener("click", () => {
+      handlers.onEnterPlay?.();
+    });
+    stage.querySelector("[data-save-product]")?.addEventListener("click", () => {
+      handlers.onSaveProduct?.();
+    });
     if (panelFeed) ensureQuestionsHostIn(panelFeed);
     return;
   }

web/app.js

@@ -1,4 +1,11 @@
-import { renderWorkspace, updateLiveStreamPanel, resetRailChrome, fillStepArtifactDialog } from "./agent-ui.js";
+import {
+  renderWorkspace,
+  updateLiveStreamPanel,
+  resetRailChrome,
+  fillStepArtifactDialog,
+  canOfferSaveProduct,
+  canOfferEnterPlay,
+} from "./agent-ui.js";
 import { downloadMarkdown, sessionToMarkdown } from "./export.js";
 import { renderIntakePanel } from "./intake-ui.js";
 import { displaySkillPackLabel, isFlowPlanReview, reviewComposerCopy } from "./display-labels.js";
@@ -24,6 +31,8 @@ let bookSelectMode = false;
 let selectedBookIds = new Set();
 let activePlaySaveId = null;
 const playSavesByBook = new Map();
+const playWorkingInstanceByBook = new Map();
+const expandedProductsByBook = new Map();
 const playSavesLoading = new Set();
 let bookMenuBookId = null;
 let livePollTimer = null;
@@ -99,6 +108,17 @@ function resolveUserTask(view, loading) {
     };
   }
 
+  if (canOfferSaveProduct(view)) {
+    return {
+      id: "speak",
+      label: "可保存",
+      title: "落档产物",
+      hint: view.hasProduct
+        ? "可再保存一份新定稿，或用已有产物开玩。补节点仍点图。"
+        : "点「保存定稿」拆出产物。创作流程还在，之后用产物开玩。",
+    };
+  }
+
   if (isFlowPlanReview(view) || wr?.kind === "pick_creation_step") {
     return {
       id: "speak",
@@ -758,12 +778,30 @@ function renderComposer(view, loading) {
   }
 
   if (spec.mode === "pick_step") {
+    const saveProduct = canOfferSaveProduct(view)
+      ? `<button type="button" class="btn btn-primary" data-act="save-product">保存定稿</button>`
+      : "";
+    const enterPlay = canOfferEnterPlay(view)
+      ? `<button type="button" class="btn" data-act="enter-play">${
+          view.hasProduct ? "用产物开玩" : "开玩"
+        }</button>`
+      : "";
+    const sendCls =
+      canOfferSaveProduct(view) || canOfferEnterPlay(view)
+        ? "btn composer-btn"
+        : "btn btn-primary composer-btn";
     const shell = composerInputShell(spec, {
       textareaHtml: `<textarea id="composer-input" rows="1" placeholder="${esc(spec.placeholder)}"></textarea>`,
-      trailing: `<button type="submit" class="btn btn-primary composer-btn" data-act="pick-replan" disabled title="写下意见后再发；点图上节点即确认并进入">${esc(spec.submitLabel || "发送")}</button>`,
+      trailing: `${saveProduct}${enterPlay}<button type="submit" class="${sendCls}" data-act="pick-replan" disabled title="写下意见后再发；点图上节点即确认并进入">${esc(spec.submitLabel || "发送")}</button>`,
     });
     root.innerHTML = `<form class="composer-form" id="composer-form">${shell}</form>`;
     wireComposerForm({ requiresText: true });
+    root.querySelector("[data-act=save-product]")?.addEventListener("click", () => {
+      void saveCurrentInstance();
+    });
+    root.querySelector("[data-act=enter-play]")?.addEventListener("click", () => {
+      enterPlayNow();
+    });
     applyPendingComposerDraft();
     return;
   }
@@ -956,8 +994,49 @@ function playRunsForBook(bookId) {
   return (playSavesByBook.get(bookId) ?? []).filter((s) => s.kind === "run");
 }
 
+function productInstancesForBook(bookId) {
+  return (playSavesByBook.get(bookId) ?? []).filter((s) => s.kind === "instance");
+}
+
+function resolveRunInstanceId(run, products) {
+  if (run.instanceId && products.some((p) => p.id === run.instanceId)) {
+    return run.instanceId;
+  }
+  if (!products.length) return null;
+  const sorted = [...products].sort((a, b) =>
+    String(a.createdAt).localeCompare(String(b.createdAt)),
+  );
+  let id = sorted[0].id;
+  for (const product of sorted) {
+    if (String(product.createdAt) <= String(run.createdAt)) id = product.id;
+  }
+  return id;
+}
+
+function runsForProduct(bookId, instanceId, products) {
+  return playRunsForBook(bookId).filter(
+    (run) => resolveRunInstanceId(run, products) === instanceId,
+  );
+}
+
+function isProductExpanded(bookId, instanceId, fallback) {
+  const set = expandedProductsByBook.get(bookId);
+  if (set) return set.has(instanceId);
+  return Boolean(fallback);
+}
+
+function toggleProductExpanded(bookId, instanceId) {
+  const open = isProductExpanded(bookId, instanceId, false);
+  const next = new Set();
+  if (!open) next.add(instanceId);
+  expandedProductsByBook.set(bookId, next);
+  renderBookList();
+}
+
 function bookPlayReady(bookId) {
-  if (lastView?.bookId === bookId && Boolean(lastView?.playReady)) return true;
+  if (lastView?.bookId === bookId && Boolean(lastView?.playReady || lastView?.hasProduct)) {
+    return true;
+  }
   const saves = playSavesByBook.get(bookId);
   if (!Array.isArray(saves)) return false;
   return saves.some((s) => s.kind === "instance" || s.kind === "run");
@@ -980,8 +1059,10 @@ async function fetchPlaySavesForBook(bookId, force = false) {
   try {
     const data = await api(`/api/books/${encodeURIComponent(bookId)}/saves`);
     playSavesByBook.set(bookId, data.saves ?? []);
+    playWorkingInstanceByBook.set(bookId, data.playWorkingInstanceId ?? null);
   } catch {
     playSavesByBook.set(bookId, []);
+    playWorkingInstanceByBook.set(bookId, null);
   } finally {
     playSavesLoading.delete(bookId);
     renderBookList();
@@ -1107,10 +1188,12 @@ function renderExplorerRow({
   actionClass,
   onClick,
   onDelete,
+  onRename,
   child,
   twistie,
   expanded,
   onTwistie,
+  title,
 }) {
   const row = document.createElement("button");
   row.type = "button";
@@ -1125,6 +1208,7 @@ function renderExplorerRow({
     .filter(Boolean)
     .join(" ");
   if (bookId) row.dataset.bookId = bookId;
+  if (title) row.title = title;
   row.innerHTML = `
     ${twistie ? `<span class="explorer-twist" data-twist>${expanded ? "▾" : "▸"}</span>` : ""}
     <span class="explorer-main">
@@ -1136,10 +1220,17 @@ function renderExplorerRow({
     if (e.target.closest(".explorer-del") || e.target.closest("[data-twist]")) return;
     onClick?.(e);
   });
-  row.querySelector("[data-twist]")?.addEventListener("click", (e) => {
-    e.stopPropagation();
-    onTwistie?.();
-  });
+  if (onRename) {
+    row.addEventListener("dblclick", (e) => {
+      if (e.target.closest(".explorer-del") || e.target.closest("[data-twist]")) return;
+      e.preventDefault();
+      onRename();
+    });
+  }
+    row.querySelector("[data-twist]")?.addEventListener("click", (e) => {
+      e.stopPropagation();
+      (onTwistie || onClick)?.();
+    });
   row.querySelector(".explorer-del")?.addEventListener("click", (e) => {
     e.stopPropagation();
     onDelete?.();
@@ -1157,11 +1248,16 @@ function renderExplorerRow({
   return row;
 }
 
-function renderBookBranch(book, list, { nested = false } = {}) {
+function renderBookBranch(book, list) {
   const loading = playSavesLoading.has(book.id);
   const saves = playSavesByBook.get(book.id);
-  const ready = bookPlayReady(book.id);
+  const products = productInstancesForBook(book.id);
   const playHere = book.id === activeBookId && isPlayNow();
+  const playingInstanceId =
+    playHere && lastView?.playInstanceId
+      ? lastView.playInstanceId
+      : playWorkingInstanceByBook.get(book.id);
+  const latestId = products[0]?.id;
 
   if (loading && saves === undefined) {
     const hint = document.createElement("p");
@@ -1171,56 +1267,96 @@ function renderBookBranch(book, list, { nested = false } = {}) {
     return;
   }
 
-  if (ready) {
-    list.appendChild(
-      renderExplorerRow({
-        name: "当前",
-        meta: playHere && !activePlaySaveId ? "进行中" : "工作副本",
-        active: playHere && !activePlaySaveId,
-        child: nested,
-        onClick: () => void openCurrentPlay(book.id),
-      }),
-    );
-  }
+  for (const product of products) {
+    const isLatest = product.id === latestId;
+    const isPlayingHere = playHere && playingInstanceId === product.id;
+    const hasWorking = playingInstanceId === product.id;
+    const expanded = isProductExpanded(book.id, product.id, isPlayingHere);
+    const runs = runsForProduct(book.id, product.id, products);
+    const wrap = document.createElement("div");
+    wrap.className = `explorer-product${expanded ? " is-open" : ""}`;
 
-  for (const s of playRunsForBook(book.id)) {
-    const when = formatSaveWhen(s.createdAt);
-    list.appendChild(
-      renderExplorerRow({
-        name: s.label,
-        meta: when ? `游玩 · ${when}` : "游玩进度",
-        active: playHere && activePlaySaveId === s.id,
-        child: nested,
-        actionClass: "explorer-file",
-        onClick: () => void loadPlaySave(book.id, s.id),
-        onDelete: () => void deletePlaySave(book.id, s.id, s.label),
-      }),
-    );
-  }
+    const header = renderExplorerRow({
+      name: product.label,
+      meta: isLatest ? "最新" : "",
+      twistie: true,
+      expanded,
+      title: "点开游玩存档，双击改名",
+      onTwistie: () => toggleProductExpanded(book.id, product.id),
+      onClick: () => toggleProductExpanded(book.id, product.id),
+      onRename: () => void renamePlaySave(book.id, product.id, product.label),
+      onDelete: () => void deletePlaySave(book.id, product.id, product.label, "落档"),
+    });
+    header.setAttribute("aria-expanded", expanded ? "true" : "false");
+    wrap.appendChild(header);
 
-  if (ready) {
-    list.appendChild(
-      renderExplorerRow({
-        name: "+ 新开一局",
-        actionClass: "explorer-action",
-        child: nested,
-        onClick: () => void startNewPlayForBook(book.id),
-      }),
-    );
+    if (expanded) {
+      const drop = document.createElement("div");
+      drop.className = "explorer-drop";
+      drop.setAttribute("role", "group");
+      drop.setAttribute("aria-label", `${product.label} 的游玩存档`);
+
+      if (hasWorking) {
+        drop.appendChild(
+          renderExplorerRow({
+            name: "当前游玩",
+            meta: isPlayingHere && !activePlaySaveId ? "进行中" : "工作副本",
+            active: isPlayingHere && !activePlaySaveId,
+            child: true,
+            onClick: () => void openCurrentPlay(book.id),
+          }),
+        );
+      }
+
+      if (!runs.length && !hasWorking) {
+        const hint = document.createElement("p");
+        hint.className = "explorer-drop-empty";
+        hint.textContent = "还没有游玩存档";
+        drop.appendChild(hint);
+      }
+
+      for (const run of runs) {
+        const runWhen = formatSaveWhen(run.createdAt);
+        drop.appendChild(
+          renderExplorerRow({
+            name: run.label,
+            meta: runWhen || "游玩进度",
+            active: playHere && activePlaySaveId === run.id,
+            child: true,
+            actionClass: "explorer-file",
+            onClick: () => void loadPlaySave(book.id, run.id),
+            onRename: () => void renamePlaySave(book.id, run.id, run.label),
+            onDelete: () => void deletePlaySave(book.id, run.id, run.label, "游玩存档"),
+          }),
+        );
+      }
+
+      drop.appendChild(
+        renderExplorerRow({
+          name: "+ 新开一局",
+          actionClass: "explorer-action",
+          child: true,
+          onClick: () => void startNewPlayForBook(book.id, product.id),
+        }),
+      );
+      wrap.appendChild(drop);
+    }
+
+    list.appendChild(wrap);
   }
 }
 
 function renderBookContents(book, list) {
-  const skill = book.activeSkillName ?? book.activeSkillId ?? book.orchestratorName ?? "实例设计";
+  const designing = book.id === activeBookId && !isPlayNow();
   list.appendChild(
     renderExplorerRow({
-      name: "创作",
-      meta: skill,
-      active: book.id === activeBookId && !isPlayNow(),
+      name: "继续创作",
+      meta: designing ? "进行中" : "",
+      active: designing,
       onClick: () => void openBookDesign(book.id),
     }),
   );
-  renderBookBranch(book, list, { nested: false });
+  renderBookBranch(book, list);
 }
 
 function renderBookList() {
@@ -1439,8 +1575,25 @@ async function loadPlaySave(bookId, saveId) {
   }
 }
 
-async function deletePlaySave(bookId, saveId, label) {
-  if (!confirm(`删除游玩存档「${label}」？`)) return;
+async function renamePlaySave(bookId, saveId, currentLabel) {
+  const next = prompt("名称", currentLabel);
+  if (next == null) return;
+  const trimmed = next.trim();
+  if (!trimmed) return alert("名称不能为空");
+  if (trimmed === currentLabel) return;
+  try {
+    await api(
+      `/api/books/${encodeURIComponent(bookId)}/saves/${encodeURIComponent(saveId)}`,
+      { method: "PATCH", body: JSON.stringify({ label: trimmed }) },
+    );
+    await fetchPlaySavesForBook(bookId, true);
+  } catch (err) {
+    alert(err.message);
+  }
+}
+
+async function deletePlaySave(bookId, saveId, label, kindLabel = "游玩存档") {
+  if (!confirm(`删除${kindLabel}「${label}」？`)) return;
   try {
     await api(
       `/api/books/${encodeURIComponent(bookId)}/saves/${encodeURIComponent(saveId)}`,
@@ -1453,17 +1606,25 @@ async function deletePlaySave(bookId, saveId, label) {
   }
 }
 
-async function startNewPlayForBook(bookId) {
-  if (!bookPlayReady(bookId)) {
-    alert("须先验收 Worker 集");
+async function startNewPlayForBook(bookId, instanceId) {
+  const thisView = lastView?.bookId === bookId ? lastView : null;
+  if (!bookPlayReady(bookId) && !thisView?.hasProduct && !canOfferEnterPlay(thisView)) {
+    alert("请先保存产物，或完成收口后再开玩");
     return;
   }
   try {
     navigateToBook(bookId);
     if (lastView?.bookId === bookId) renderSession(lastView, true);
-    const data = await api(`/api/books/${encodeURIComponent(bookId)}/play/new`, { method: "POST" });
+    const data = await api(`/api/books/${encodeURIComponent(bookId)}/play/new`, {
+      method: "POST",
+      body: JSON.stringify(instanceId ? { instanceId } : {}),
+    });
     activePlaySaveId = null;
+    if (instanceId) {
+      expandedProductsByBook.set(bookId, new Set([instanceId]));
+    }
     renderSession(data.session, false);
+    void fetchPlaySavesForBook(bookId, true);
   } catch (err) {
     if (lastView) renderSession(lastView, false);
     alert(err.message);
@@ -1549,6 +1710,8 @@ function closeWorkspace({ emptyCopy = "" } = {}) {
   if (btnInst) btnInst.hidden = true;
   const btnExport = $("btn-export");
   if (btnExport) btnExport.disabled = true;
+  const toggle = $("lifecycle-toggle");
+  if (toggle) toggle.hidden = true;
   $("message-feed").innerHTML = emptyCopy ? `<p class="empty">${emptyCopy}</p>` : "";
   const stage = $("workspace-stage");
   if (stage) {
@@ -1683,6 +1846,8 @@ function renderSession(view, loading = false) {
     onViewStepArtifact: (stepId, name) => showStepArtifactDialog(stepId, name),
     onSpawnCreationStep: (moduleName) => runAction("spawn_step", { moduleName }),
     onLeaveCreationStep: () => runAction("leave_step"),
+    onEnterPlay: () => enterPlayNow(),
+    onSaveProduct: () => void saveCurrentInstance(),
   });
   renderComposer(view, loading);
   if (loading) startLivePoll();
@@ -1930,6 +2095,14 @@ async function runAction(action, extra = {}) {
   }
 }
 
+function enterPlayNow() {
+  if (activeBookId) {
+    void openCurrentPlay(activeBookId);
+    return;
+  }
+  void setLifecycle("play");
+}
+
 async function setLifecycle(stage) {
   if (!sessionId) return;
   if (stage === lastView?.lifecycleStage) {
@@ -1942,8 +2115,8 @@ async function setLifecycle(stage) {
       return;
     }
   }
-  if (stage === "play" && !lastView?.playReady) {
-    alert("请先验收 Worker 集（创作定稿）后再进入游玩");
+  if (stage === "play" && !lastView?.playReady && !canOfferEnterPlay(lastView) && !lastView?.hasProduct) {
+    alert("请先保存产物，或完成收口后再开玩");
     return;
   }
   try {
@@ -1953,6 +2126,7 @@ async function setLifecycle(stage) {
     });
     if (stage === "design") activePlaySaveId = null;
     renderSession(view, false);
+    if (activeBookId) void fetchPlaySavesForBook(activeBookId, true);
   } catch (err) {
     alert(err.message || "无法切换阶段");
     if (lastView) renderSession(lastView, false);
@@ -2109,17 +2283,34 @@ async function saveCurrentPlay() {
   }
 }
 
+function defaultArchiveLabel() {
+  return (
+    formatSaveWhen(new Date().toISOString()) ||
+    new Date().toLocaleString("zh-CN")
+  );
+}
+
 async function saveCurrentInstance() {
-  if (!activeBookId || !lastView?.playReady) return alert("须先验收 Worker 集");
-  const label = prompt("创作定稿存档名称");
+  if (!activeBookId || (!lastView?.playReady && !canOfferSaveProduct(lastView))) {
+    return alert("须先完成收口或验收 Worker 集");
+  }
+  const label = prompt("落档名称", defaultArchiveLabel());
   if (!label?.trim()) return;
   try {
     await api(`/api/books/${encodeURIComponent(activeBookId)}/saves`, {
       method: "POST",
       body: JSON.stringify({ label: label.trim(), sessionId, kind: "instance" }),
     });
-    playSavesByBook.delete(activeBookId);
-    void fetchPlaySavesForBook(activeBookId, true);
+    if (lastView) {
+      lastView = { ...lastView, hasProduct: true };
+      renderSession(lastView, false);
+    }
+    await fetchPlaySavesForBook(activeBookId, true);
+    const newest = productInstancesForBook(activeBookId)[0];
+    if (newest) {
+      expandedProductsByBook.set(activeBookId, new Set([newest.id]));
+      renderBookList();
+    }
   } catch (err) {
     alert(err.message);
   }
@@ -2223,6 +2414,11 @@ function exportSession() {
   downloadMarkdown(`${name}.md`, sessionToMarkdown(lastView));
 }
 
+$("lifecycle-toggle")?.addEventListener("click", (e) => {
+  const stage = e.target.closest("[data-stage]")?.getAttribute("data-stage");
+  if (stage === "play") enterPlayNow();
+  else if (stage === "design") void setLifecycle("design");
+});
 $("btn-new-book")?.addEventListener("click", openNewBookDialog);
 $("btn-cancel-new")?.addEventListener("click", () => $("dialog-new-book").close());
 $("book-action-menu")?.addEventListener("click", (e) => {

web/index.html

@@ -80,6 +80,10 @@
 
         <footer class="composer" id="composer">
           <span class="status" id="status-pill"><span class="status-dot" id="status-dot"></span><span id="status-text">—</span></span>
+          <div class="lifecycle-toggle" id="lifecycle-toggle" hidden role="group" aria-label="创作与游玩">
+            <button type="button" class="lifecycle-btn" data-stage="design">创作</button>
+            <button type="button" class="lifecycle-btn" data-stage="play">游玩</button>
+          </div>
           <div id="composer-main"></div>
           <details class="more-menu">
             <summary class="btn-sm more-menu-sum" title="更多">更多</summary>
@@ -121,7 +125,7 @@
 
     <menu id="book-action-menu" class="context-menu" hidden>
       <button type="button" class="context-menu-item" id="book-menu-open" data-action="open">打开创作</button>
-      <button type="button" class="context-menu-item" id="book-menu-play" data-action="play">进入游玩</button>
+      <button type="button" class="context-menu-item" id="book-menu-play" data-action="play">用产物开玩</button>
       <button type="button" class="context-menu-item" id="book-menu-save-instance" data-action="save-instance">保存定稿</button>
       <button type="button" class="context-menu-item" id="book-menu-save-play" data-action="save-play">保存游玩</button>
       <button type="button" class="context-menu-item" id="book-menu-export" data-action="export">导出</button>

web/present-shells.js

@@ -3,7 +3,7 @@
  * 契约：docs/play-presentation-shells.md · present.v1
  *
  * 信息层级约定（所有壳共用）：
- *   P0 body  — 最大字号与面积，阅读主轴
+ *   P0 body  — 阅读主轴：字号大于辅助栏，但不做成讲稿大字
  *   P1 actions — 需要决策时醒目，但不压过正文
  *   P2 monitor — 芯片密排，一眼扫完
  *   P3 header / footer / aside — 辅助，紧凑
@@ -66,20 +66,20 @@ export function shellDefaultRegions(shell) {
 }
 
 function formatBlockContent(value) {
+  let text = "";
   if (value === undefined || value === null) return "";
-  if (typeof value === "string") return value;
-  if (Array.isArray(value)) {
-    return value
+  if (typeof value === "string") text = value;
+  else if (Array.isArray(value)) {
+    text = value
       .map((x) => (typeof x === "string" ? x : JSON.stringify(x)))
       .filter(Boolean)
       .join("\n");
-  }
-  if (typeof value === "object") {
-    return Object.entries(value)
+  } else if (typeof value === "object") {
+    text = Object.entries(value)
       .map(([k, v]) => `${k}：${typeof v === "string" ? v : JSON.stringify(v)}`)
       .join("\n");
-  }
-  return String(value);
+  } else text = String(value);
+  return text.replace(/\n{3,}/g, "\n\n");
 }
 
 /** 模型常把 tag 名写进正文开头；展示前剥掉 */
@@ -132,7 +132,11 @@ function regionInnerHtml(region, rawValue, esc) {
     if (chips) return chips;
   }
   const text = formatBlockContent(rawValue).trim();
-  return `<div class="present-region-body">${esc(text).replace(/\n/g, "<br>")}</div>`;
+  const paras = text.split(/\n\n+/).filter(Boolean);
+  const inner = paras
+    .map((p) => `<p>${esc(p).replace(/\n/g, "<br>")}</p>`)
+    .join("");
+  return `<div class="present-region-body">${inner}</div>`;
 }
 
 /**
@@ -300,26 +304,28 @@ export function renderPresentShellHtml(packet, esc, opts = {}) {
           ${actionsHtml}
         </div>`;
       break;
-    case "turn_panel":
+    case "turn_panel": {
+      const boardSide = `${by.aside || ""}${by.footer || ""}`;
       layoutHtml = `
         <div class="present-board">
           <div class="present-board-top">${by.monitor || ""}${by.header || ""}</div>
-          <div class="present-board-mid">
+          <div class="present-board-mid${boardSide ? "" : " is-solo"}">
             <div class="present-stage">${by.body || ""}</div>
-            <div class="present-board-side">${by.aside || ""}${by.footer || ""}</div>
+            ${boardSide ? `<div class="present-board-side">${boardSide}</div>` : ""}
           </div>
           ${actionsHtml}
         </div>`;
       break;
+    }
     case "split_board":
       layoutHtml = `
-        <div class="present-split">
+        <div class="present-split${by.aside ? "" : " is-solo"}">
           <div class="present-split-main">
             ${by.header || ""}
             <div class="present-stage">${by.body || ""}</div>
             ${by.footer || ""}
           </div>
-          <div class="present-split-side">${by.aside || ""}</div>
+          ${by.aside ? `<div class="present-split-side">${by.aside}</div>` : ""}
           ${actionsHtml}
         </div>`;
       break;
@@ -334,13 +340,13 @@ export function renderPresentShellHtml(packet, esc, opts = {}) {
       break;
     case "chapter_reader":
       layoutHtml = `
-        <div class="present-reader">
+        <div class="present-reader${by.aside ? "" : " is-solo"}">
           <div class="present-reader-main">
             ${by.header || ""}
             <div class="present-stage present-stage--read">${by.body || ""}</div>
             ${by.footer || ""}
           </div>
-          <div class="present-reader-aside">${by.aside || ""}</div>
+          ${by.aside ? `<div class="present-reader-aside">${by.aside}</div>` : ""}
         </div>`;
       break;
     case "prose":

web/styles.css

@@ -849,6 +849,13 @@ body.design-workspace[data-design-surface="answer"] .workspace-answer {
   color: var(--muted);
   max-width: 46rem;
 }
+.workspace-intent-actions {
+  margin-top: 22px;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  align-items: center;
+}
 .workspace-intent-meta {
   margin: 14px 0 0;
   font-size: 12px;
@@ -1666,6 +1673,10 @@ body.design-workspace .flow-step[data-run="done"] .flow-name {
 }
 .explorer-row.child .explorer-name { font-size: 12px; font-weight: 400; }
 .explorer-row:hover { background: var(--bg); }
+.explorer-row:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: -2px;
+}
 .explorer-row.active { background: var(--accent-soft); }
 .explorer-row.active .explorer-name { color: var(--accent); font-weight: 600; }
 .explorer-row.selected { background: #dbeafe; }
@@ -1728,15 +1739,59 @@ body.design-workspace .flow-step[data-run="done"] .flow-name {
 .explorer-hint {
   margin: 4px 8px 4px 28px; font-size: 11px; color: var(--muted); line-height: 1.4;
 }
+.explorer-product {
+  margin: 2px 0 6px;
+}
+.explorer-product.is-open {
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  background: var(--surface);
+  overflow: hidden;
+}
+.explorer-product.is-open > .explorer-row {
+  border-radius: 0;
+  background: var(--bg);
+}
+.explorer-product.is-open > .explorer-row:hover {
+  background: #ececee;
+}
+.explorer-drop {
+  border-top: 1px solid var(--border);
+  padding: 4px;
+  background: var(--surface);
+}
+.explorer-drop .explorer-row.child {
+  padding-left: 12px;
+}
+.explorer-drop-empty {
+  margin: 4px 8px 8px 12px;
+  font-size: 12px;
+  line-height: 1.4;
+  color: var(--muted);
+}
 .sidebar-empty { padding: 12px; color: var(--muted); font-size: 13px; text-align: center; }
 
 /* Lifecycle */
-.lifecycle-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
+.lifecycle-toggle {
+  display: inline-flex;
+  flex: 0 0 auto;
+  align-self: center;
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 2px;
+  background: var(--surface);
+}
+.lifecycle-toggle[hidden] { display: none; }
 .lifecycle-btn {
-  border: none; background: transparent; padding: 4px 14px; border-radius: 6px;
-  font-size: 13px; cursor: pointer; color: var(--muted);
+  border: none; background: transparent; padding: 4px 10px; border-radius: 6px;
+  font-size: 12px; cursor: pointer; color: var(--muted); font-weight: 500;
 }
 .lifecycle-btn.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
+.lifecycle-btn:disabled { opacity: 0.4; cursor: not-allowed; }
+.lifecycle-btn:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 1px;
+}
 body[data-lifecycle="play"] { --accent: #16a34a; --accent-soft: #dcfce7; --bg: #f0fdf4; }
 body[data-lifecycle="play"] .panel-rail { background: #f7fef9; }
 
@@ -2227,10 +2282,10 @@ body.rail-collapsed .message-feed {
 .msg-q-list li { margin: 0.35rem 0; }
 .msg-q-lead { margin: 0; line-height: 1.55; font-size: 14px; }
 
-/* 游玩：每轮终稿仍是气泡（方便扫上下文），正文在气泡里撑高 */
+/* 游玩：终稿铺满阅读区；字号跟正文阅读走，不跟创作验收的大字稿走 */
 body[data-lifecycle="play"] .message-feed {
-  padding: 16px 18px 22px;
-  gap: 16px;
+  padding: 10px 12px 16px;
+  gap: 10px;
 }
 body[data-lifecycle="play"] .msg-assistant-row .msg-bubble {
   width: min(100%, 44rem);
@@ -2246,7 +2301,12 @@ body[data-lifecycle="play"] .msg-user-row .msg-bubble {
   max-width: 90%;
 }
 body[data-lifecycle="play"] .msg-play-final .msg-bubble {
-  width: min(100%, 46rem);
+  width: 100%;
+  max-width: 100%;
+}
+body[data-lifecycle="play"] .msg-play-final .msg-body {
+  padding: 6px 14px 12px;
+  white-space: normal;
 }
 body[data-lifecycle="play"] .msg-play-final .present-shell {
   border: none;
@@ -2258,14 +2318,25 @@ body[data-lifecycle="play"] .msg-play-final .present-shell {
 body[data-lifecycle="play"] .msg-play-final .present-shell-badge {
   display: none;
 }
+body[data-lifecycle="play"] .msg-play-final .present-stack,
+body[data-lifecycle="play"] .msg-play-final .present-board,
+body[data-lifecycle="play"] .msg-play-final .present-split,
+body[data-lifecycle="play"] .msg-play-final .present-reader {
+  gap: 10px;
+}
 body[data-lifecycle="play"] .msg-play-final .present-stage .present-region--body .present-region-body,
-body[data-lifecycle="play"] .msg-play-final .present-stage.present-region--body .present-region-body {
-  font-size: 18.5px;
-  line-height: 1.88;
+body[data-lifecycle="play"] .msg-play-final .present-stage.present-region--body .present-region-body,
+body[data-lifecycle="play"] .msg-play-final .present-stage--read .present-region-body {
+  font-size: 15px;
+  line-height: 1.65;
   max-width: none;
   max-height: none;
   overflow: visible;
 }
+body[data-lifecycle="play"] .msg-play-final .present-tone--book .present-stage--read .present-region-body,
+body[data-lifecycle="play"] .msg-play-final .present-tone--book .present-stage .present-region-body {
+  max-width: none;
+}
 body[data-lifecycle="play"] .msg-play-final .present-shell--chat_monitor .present-stage {
   padding: 0;
   border: none;
@@ -4692,15 +4763,16 @@ body.design-workspace .af-mosaic {
  * 视觉：少盒子、少渐变；层级靠字号/间距/对比，不靠装饰抢注意力。
  */
 .present-shell {
+  white-space: normal;
   --present-ink: #1c1917;
   --present-muted: #78716c;
   --present-line: #e7e5e4;
   --present-soft: #f5f5f4;
   --present-accent: #0f766e;
-  --present-body: 17.5px;
-  --present-body-lh: 1.78;
-  --present-body-hero: 19px;
-  --present-body-read: 18.5px;
+  --present-body: 15px;
+  --present-body-lh: 1.62;
+  --present-body-hero: 16.5px;
+  --present-body-read: 15.5px;
   display: flex;
   flex-direction: column;
   gap: 0;
@@ -4749,9 +4821,15 @@ body.design-workspace .af-mosaic {
 .present-region-body {
   margin: 0;
   line-height: 1.65;
-  white-space: pre-wrap;
+  white-space: normal;
   font-size: 14px;
 }
+.present-region-body > p {
+  margin: 0 0 0.7em;
+}
+.present-region-body > p:last-child {
+  margin-bottom: 0;
+}
 /* P0：正文舞台 —— 随字数伸展（500～2000 靠外层滚动，不塞进小框） */
 .present-stage {
   flex: 1 1 auto;
@@ -4778,8 +4856,8 @@ body.design-workspace .af-mosaic {
 .present-stage--read .present-region-body {
   font-family: var(--font-read);
   font-size: var(--present-body-read);
-  line-height: 1.9;
-  max-width: 42rem;
+  line-height: 1.7;
+  max-width: none;
 }
 /* 双栏：侧栏钉住，正文再长也能对照 */
 .present-board-side,
@@ -4893,6 +4971,13 @@ body.design-workspace .af-mosaic {
   gap: 16px;
   align-items: start;
 }
+.present-board-mid.is-solo,
+.present-board-mid:not(:has(.present-board-side)) {
+  grid-template-columns: minmax(0, 1fr);
+}
+.present-board-side:empty {
+  display: none;
+}
 .present-board-side {
   display: flex;
   flex-direction: column;
@@ -4912,6 +4997,13 @@ body.design-workspace .af-mosaic {
   gap: 16px 20px;
   align-items: start;
 }
+.present-split.is-solo,
+.present-split:not(:has(.present-split-side)) {
+  grid-template-columns: minmax(0, 1fr);
+}
+.present-split-side:empty {
+  display: none;
+}
 .present-split-main {
   display: flex;
   flex-direction: column;
@@ -4963,6 +5055,13 @@ body.design-workspace .af-mosaic {
   gap: 20px;
   align-items: start;
 }
+.present-reader.is-solo,
+.present-reader:not(:has(.present-reader-aside)) {
+  grid-template-columns: minmax(0, 1fr);
+}
+.present-reader-aside:empty {
+  display: none;
+}
 .present-reader-main {
   display: flex;
   flex-direction: column;
@@ -5015,7 +5114,7 @@ body.design-workspace .af-mosaic {
 .present-tone--book .present-stage--read .present-region-body,
 .present-tone--book .present-stage .present-region-body {
   font-family: var(--font-read);
-  max-width: 38rem;
+  max-width: none;
 }
 .present-tone--terminal {
   --present-ink: #d6d3d1;