refactor(chat): remove private unlock machine flow

src/app/chat/chat-screen.tsx

@@ -49,12 +49,6 @@ export function ChatScreen() {
     state.upgradePromptVisible && state.upgradeReason === "daily_limit";
   const messageLimitTitle = "The limit for free chat times\nhas been reached";
 
-  const showPrivatePaywallBanner =
-    state.upgradePromptVisible && state.upgradeReason === "private_message";
-
-  const inlineUpgradeTitle = "Unlock VIP to view private messages";
-  const inlineUpgradeCta = "Activate VIP to view private messages";
-
   const externalBrowserPromptShownRef = useRef(false);
   const chatPaywallSubscriptionUrl = ROUTE_BUILDERS.subscription("vip", {
     returnTo: "chat",
@@ -129,7 +123,7 @@ export function ChatScreen() {
     UrlLauncherUtil.openUrlWithExternalBrowser(ROUTES.splash);
   }
 
-  function handleUnlockPrivateMessage(): void {
+  function openChatPaywallSubscription(): void {
     if (isGuest) {
       router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
       return;
@@ -137,28 +131,20 @@ export function ChatScreen() {
     router.push(chatPaywallSubscriptionUrl);
   }
 
+  function handleUnlockPrivateMessage(): void {
+    openChatPaywallSubscription();
+  }
+
   function handleUnlockImagePaywall(): void {
-    if (isGuest) {
+    openChatPaywallSubscription();
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
   }
 
   function handleMessageLimitUnlock(): void {
-    if (isGuest) {
+    openChatPaywallSubscription();
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
   }
 
   function handleUnlockVoiceMessage(): void {
-    if (isGuest) {
+    openChatPaywallSubscription();
-      router.push(ROUTE_BUILDERS.authWithRedirect(chatPaywallSubscriptionUrl));
-      return;
-    }
-    router.push(chatPaywallSubscriptionUrl);
   }
 
   return (
@@ -183,19 +169,11 @@ export function ChatScreen() {
             messages={state.messages}
             isReplyingAI={state.isReplyingAI}
             isGuest={isGuest}
-            unlockingPrivateMessageId={state.unlockingPrivateMessageId}
             onUnlockPrivateMessage={handleUnlockPrivateMessage}
             onUnlockImagePaywall={handleUnlockImagePaywall}
             onUnlockVoiceMessage={handleUnlockVoiceMessage}
           />
 
-          {showPrivatePaywallBanner ? (
-            <ChatQuotaExhaustedBanner
-              title={inlineUpgradeTitle}
-              ctaLabel={inlineUpgradeCta}
-            />
-          ) : null}
-
           {showMessageLimitBanner ? (
             <ChatQuotaExhaustedBanner
               title={messageLimitTitle}

src/app/chat/components/chat-area.tsx

@@ -26,8 +26,7 @@ export interface ChatAreaProps {
   messages: readonly UiMessage[];
   isReplyingAI: boolean;
   isGuest: boolean;
-  unlockingPrivateMessageId?: string | null;
+  onUnlockPrivateMessage?: () => void;
-  onUnlockPrivateMessage?: (messageId: string) => void;
   onUnlockImagePaywall?: () => void;
   onUnlockVoiceMessage?: () => void;
 }
@@ -35,7 +34,6 @@ export interface ChatAreaProps {
 export function ChatArea({
   messages,
   isReplyingAI,
-  unlockingPrivateMessageId,
   onUnlockPrivateMessage,
   onUnlockImagePaywall,
   onUnlockVoiceMessage,
@@ -60,7 +58,6 @@ export function ChatArea({
 
       {renderMessagesWithDateHeaders(
         messages,
-        unlockingPrivateMessageId,
         onUnlockPrivateMessage,
         onUnlockImagePaywall,
         onUnlockVoiceMessage,
@@ -74,8 +71,7 @@ export function ChatArea({
 /** 渲染消息列表（按日期分组插入分隔条） */
 function renderMessagesWithDateHeaders(
   messages: readonly UiMessage[],
-  unlockingPrivateMessageId?: string | null,
+  onUnlockPrivateMessage?: () => void,
-  onUnlockPrivateMessage?: (messageId: string) => void,
   onUnlockImagePaywall?: () => void,
   onUnlockVoiceMessage?: () => void,
 ) {
@@ -94,7 +90,6 @@ function renderMessagesWithDateHeaders(
     ) : (
       <MessageBubble
         key={item.key}
-        id={item.message.id}
         content={item.message.content}
         imageUrl={item.message.imageUrl}
         imagePaywalled={item.message.imagePaywalled}
@@ -104,10 +99,6 @@ function renderMessagesWithDateHeaders(
         lockReason={item.message.lockReason}
         lockedPrivate={item.message.lockedPrivate}
         privateMessageHint={item.message.privateMessageHint}
-        isUnlockingPrivate={
-          item.message.id != null &&
-          item.message.id === unlockingPrivateMessageId
-        }
         onUnlockPrivateMessage={onUnlockPrivateMessage}
         onUnlockImagePaywall={onUnlockImagePaywall}
         onUnlockVoiceMessage={onUnlockVoiceMessage}

src/app/chat/components/message-bubble.tsx

@@ -15,7 +15,6 @@ import { MessageContent } from "./message-content";
 import styles from "./chat-area.module.css";
 
 export interface MessageBubbleProps {
-  id?: string;
   content: string;
   imageUrl?: string | null;
   imagePaywalled?: boolean;
@@ -25,14 +24,12 @@ export interface MessageBubbleProps {
   lockReason?: string | null;
   lockedPrivate?: boolean | null;
   privateMessageHint?: string | null;
-  isUnlockingPrivate?: boolean;
+  onUnlockPrivateMessage?: () => void;
-  onUnlockPrivateMessage?: (messageId: string) => void;
   onUnlockImagePaywall?: () => void;
   onUnlockVoiceMessage?: () => void;
 }
 
 export function MessageBubble({
-  id,
   content,
   imageUrl,
   imagePaywalled,
@@ -42,7 +39,6 @@ export function MessageBubble({
   lockReason,
   lockedPrivate,
   privateMessageHint,
-  isUnlockingPrivate,
   onUnlockPrivateMessage,
   onUnlockImagePaywall,
   onUnlockVoiceMessage,
@@ -55,7 +51,6 @@ export function MessageBubble({
         <MessageAvatar isFromAI={true} />
         <div style={{ width: 8 }} />
         <MessageContent
-          messageId={id}
           content={content}
           imageUrl={imageUrl}
           imagePaywalled={imagePaywalled}
@@ -65,7 +60,6 @@ export function MessageBubble({
           lockReason={lockReason}
           lockedPrivate={lockedPrivate}
           privateMessageHint={privateMessageHint}
-          isUnlockingPrivate={isUnlockingPrivate}
           onUnlockPrivateMessage={onUnlockPrivateMessage}
           onUnlockImagePaywall={onUnlockImagePaywall}
           onUnlockVoiceMessage={onUnlockVoiceMessage}
@@ -79,7 +73,6 @@ export function MessageBubble({
     <div className={styles.bubbleRowUser} aria-label="User message">
       <div style={{ width: 43 }} /> {/* 占位 */}
       <MessageContent
-        messageId={id}
         content={content}
         imageUrl={imageUrl}
         imagePaywalled={imagePaywalled}
@@ -89,7 +82,6 @@ export function MessageBubble({
         lockReason={lockReason}
         lockedPrivate={lockedPrivate}
         privateMessageHint={privateMessageHint}
-        isUnlockingPrivate={isUnlockingPrivate}
         onUnlockPrivateMessage={onUnlockPrivateMessage}
         onUnlockImagePaywall={onUnlockImagePaywall}
         onUnlockVoiceMessage={onUnlockVoiceMessage}

src/app/chat/components/message-content.tsx

@@ -5,7 +5,6 @@ import { TextBubble } from "./text-bubble";
 import { VoiceBubble } from "./voice-bubble";
 
 export interface MessageContentProps {
-  messageId?: string;
   content: string;
   imageUrl?: string | null;
   imagePaywalled?: boolean;
@@ -15,8 +14,7 @@ export interface MessageContentProps {
   lockReason?: string | null;
   lockedPrivate?: boolean | null;
   privateMessageHint?: string | null;
-  isUnlockingPrivate?: boolean;
+  onUnlockPrivateMessage?: () => void;
-  onUnlockPrivateMessage?: (messageId: string) => void;
   onUnlockImagePaywall?: () => void;
   onUnlockVoiceMessage?: () => void;
 }
@@ -24,7 +22,6 @@ export interface MessageContentProps {
 const IMAGE_PLACEHOLDER = "[图片]";
 
 export function MessageContent({
-  messageId,
   content,
   imageUrl,
   imagePaywalled,
@@ -34,7 +31,6 @@ export function MessageContent({
   lockReason,
   lockedPrivate,
   privateMessageHint,
-  isUnlockingPrivate = false,
   onUnlockPrivateMessage,
   onUnlockImagePaywall,
   onUnlockVoiceMessage,
@@ -63,12 +59,8 @@ export function MessageContent({
       {isLockedPrivateMessage ? (
         <PrivateMessageCard
           hint={privateMessageHint}
-          isUnlocking={isUnlockingPrivate}
+          isUnlocking={false}
-          onUnlock={
+          onUnlock={onUnlockPrivateMessage}
-            messageId
-              ? () => onUnlockPrivateMessage?.(messageId)
-              : undefined
-          }
         />
       ) : (
         <>
@@ -85,7 +77,7 @@ export function MessageContent({
               isFromAI={isFromAI}
               locked={isLockedVoiceMessage}
               hint={privateMessageHint}
-              isUnlocking={isUnlockingPrivate}
+              isUnlocking={false}
               onUnlock={
                 isLockedVoiceMessage
                   ? onUnlockVoiceMessage

src/stores/chat/__tests__/chat-machine.helpers.test.ts

@@ -39,7 +39,6 @@ function makeChatState(overrides: Partial<ChatState> = {}): ChatState {
     upgradeReason: null,
     upgradeHint: null,
     upgradeDetail: null,
-    unlockingPrivateMessageId: null,
     isLoadingMore: false,
     hasMore: true,
     historyOffset: 0,

src/stores/chat/__tests__/chat-machine.transitions.test.ts

@@ -3,7 +3,6 @@ import { createActor, fromCallback, fromPromise, waitFor } from "xstate";
 
 import {
   ChatSendResponse,
-  UnlockPrivateResponse,
   type UiMessage,
 } from "@/data/dto/chat";
 import { chatMachine } from "@/stores/chat/chat-machine";
@@ -29,11 +28,6 @@ interface SendMessageHttpOutput {
   reply: UiMessage | null;
 }
 
-interface UnlockPrivateOutput {
-  messageId: string;
-  response: UnlockPrivateResponse;
-}
-
 function makeChatSendResponse(): ChatSendResponse {
   return ChatSendResponse.from({
     reply: "",
@@ -56,7 +50,6 @@ function makeChatSendResponse(): ChatSendResponse {
 function createTestChatMachine(
   options: {
     historyMessages?: UiMessage[];
-    unlockedContent?: string;
   } = {},
 ) {
   return chatMachine.provide({
@@ -97,21 +90,6 @@ function createTestChatMachine(
         });
         return () => undefined;
       }),
-      unlockPrivateMessage: fromPromise<
-        UnlockPrivateOutput,
-        { messageId: string }
-      >(async ({ input }) => ({
-        messageId: input.messageId,
-        response: UnlockPrivateResponse.from({
-          unlocked: true,
-          content: options.unlockedContent ?? "unlocked",
-          showUpgrade: false,
-          paywallTriggered: false,
-          privateFreeLimit: 0,
-          privateUsedToday: 0,
-          reason: "ok",
-        }),
-      })),
     },
   });
 }
@@ -167,49 +145,6 @@ describe("chatMachine transitions", () => {
     actor.stop();
   });
 
-  it("unlocks a locked private message and clears unlocking state", async () => {
-    const actor = createActor(
-      createTestChatMachine({
-        historyMessages: [
-          {
-            id: "private-1",
-            content: "",
-            isFromAI: true,
-            date: "2026-06-25",
-            locked: true,
-            lockReason: "private_message",
-            isPrivate: true,
-            lockedPrivate: true,
-            privateMessageHint: "A private message is waiting.",
-          },
-        ],
-        unlockedContent: "Here is the unlocked private message.",
-      }),
-    ).start();
-
-    actor.send({ type: "ChatUserLogin", token: "token" });
-    await waitFor(actor, (snapshot) =>
-      snapshot.matches({ userSession: "ready" }),
-    );
-
-    actor.send({ type: "ChatUnlockPrivateMessage", messageId: "private-1" });
-    await waitFor(
-      actor,
-      (snapshot) =>
-        snapshot.context.messages[0]?.content ===
-        "Here is the unlocked private message.",
-    );
-
-    const [message] = actor.getSnapshot().context.messages;
-    expect(message.content).toBe("Here is the unlocked private message.");
-    expect(message.locked).toBe(false);
-    expect(message.lockedPrivate).toBe(false);
-    expect(message.privateMessageHint).toBeNull();
-    expect(actor.getSnapshot().context.unlockingPrivateMessageId).toBeNull();
-
-    actor.stop();
-  });
-
   it("allows multiple messages to be queued without leaving ready state", async () => {
     const actor = createActor(createTestChatMachine()).start();
 
@@ -278,21 +213,6 @@ describe("chatMachine transitions", () => {
           });
           return () => undefined;
         }),
-        unlockPrivateMessage: fromPromise<
-          UnlockPrivateOutput,
-          { messageId: string }
-        >(async ({ input }) => ({
-          messageId: input.messageId,
-          response: UnlockPrivateResponse.from({
-            unlocked: true,
-            content: "unlocked",
-            showUpgrade: false,
-            paywallTriggered: false,
-            privateFreeLimit: 0,
-            privateUsedToday: 0,
-            reason: "ok",
-          }),
-        })),
       },
     });
     const actor = createActor(machine).start();

src/stores/chat/chat-context.tsx

@@ -25,7 +25,6 @@ interface ChatState {
   upgradeReason: MachineContext["upgradeReason"];
   upgradeHint: MachineContext["upgradeHint"];
   upgradeDetail: MachineContext["upgradeDetail"];
-  unlockingPrivateMessageId: MachineContext["unlockingPrivateMessageId"];
   isLoadingMore: boolean;
   hasMore: boolean;
   historyOffset: number;
@@ -52,7 +51,6 @@ export function ChatProvider({ children }: ChatProviderProps) {
       upgradeReason: state.context.upgradeReason,
       upgradeHint: state.context.upgradeHint,
       upgradeDetail: state.context.upgradeDetail,
-      unlockingPrivateMessageId: state.context.unlockingPrivateMessageId,
       isLoadingMore: state.context.isLoadingMore,
       hasMore: state.context.hasMore,
       historyOffset: state.context.historyOffset,

src/stores/chat/chat-events.ts

@@ -8,8 +8,8 @@
  * chat 机器不感知鉴权。
  *
  * 鉴权生命周期事件（本轮新增）：
- *   - `ChatGuestLogin`：游客进入 /chat —— 拉服务器端首屏，不连 WS
+ *   - `ChatGuestLogin`：游客进入 /chat —— 拉服务器端首屏
- *   - `ChatUserLogin`：其他登录用户进入 /chat —— 拉服务器端首屏，不连 WS
+ *   - `ChatUserLogin`：其他登录用户进入 /chat —— 拉服务器端首屏
  *   - `ChatLogout`：正式登录用户登出 —— 清消息
  *
  * 设计：所有历史 / 配额相关副作用全部通过派发事件给 chat 机器处理，
@@ -23,7 +23,6 @@ export type ChatEvent =
   // 业务事件
   | { type: "ChatSendMessage"; content: string }
   | { type: "ChatSendImage"; imageBase64: string }
-  | { type: "ChatUnlockPrivateMessage"; messageId: string }
   | { type: "ChatLoadMoreHistory" }
   | { type: "ChatQueuedSendStarted" }
   | {

src/stores/chat/chat-machine.actors.ts

@@ -73,41 +73,6 @@ export const loadMoreHistoryActor = fromPromise<
   };
 });
 
-export const unlockPrivateMessageActor = fromPromise<
-  {
-    messageId: string;
-    response: import("@/data/dto/chat").UnlockPrivateResponse;
-  },
-  { messageId: string }
->(async ({ input }) => {
-  const result = await chatRepo.unlockPrivateMessage(input.messageId);
-  if (Result.isErr(result)) {
-    log.error("[chat-machine] unlockPrivateMessageActor failed", {
-      messageId: input.messageId,
-      error: result.error,
-    });
-    throw result.error;
-  }
-
-  if (result.data.unlocked && result.data.content != null) {
-    const localResult = await chatRepo.markPrivateMessageUnlockedInLocal(
-      input.messageId,
-      result.data.content,
-    );
-    if (Result.isErr(localResult)) {
-      log.error("[chat-machine] unlockPrivateMessageActor local sync failed", {
-        messageId: input.messageId,
-        error: localResult.error,
-      });
-    }
-  }
-
-  return {
-    messageId: input.messageId,
-    response: result.data,
-  };
-});
-
 export const httpMessageQueueActor = fromCallback<ChatEvent>(
   ({ sendBack, receive }) => {
     return createMessageQueueActor(sendBack, receive);

src/stores/chat/chat-machine.ts

@@ -2,10 +2,10 @@
  * Chat 状态机（XState v5）
  *
  * 鉴权解耦（事件驱动）：
- *   chat 机器不感知鉴权 / 不管 WebSocket —— 由 <ChatAuthSync /> 派生 loginStatus
+ *   chat 机器不感知鉴权 —— 由 <ChatAuthSync /> 派生 loginStatus
  *   ChatAuthSync 派发登录态生命周期事件：
- *     - `ChatGuestLogin` → 游客会话（断 WS = 不连）
+ *     - `ChatGuestLogin` → 游客会话
- *     - `ChatUserLogin { token }` → 其他登录用户会话（不连 WS）
+ *     - `ChatUserLogin { token }` → 其他登录用户会话
  *     - `ChatLogout` → 正式登录用户登出
  *
  * 登录态流转约束：
@@ -15,8 +15,8 @@
  *
  * 状态结构（parent state 模式）：
  *   - `idle`：屏没挂 / 登出
- *   - `guestSession`（parent）：游客会话 —— 不 invoke WS
+ *   - `guestSession`（parent）：游客会话
- *   - `userSession`（parent）：其他登录用户会话 —— 不 invoke WS
+ *   - `userSession`（parent）：其他登录用户会话
  *
  * init 任务：
  *   - guestSession.initializing：loadHistory
@@ -50,7 +50,6 @@ import {
   sendMessageHttpActor,
   loadMoreHistoryActor,
   httpMessageQueueActor,
-  unlockPrivateMessageActor,
 } from "./chat-machine.actors";
 
 const log = new Logger("StoresChatChatMachine");
@@ -73,7 +72,6 @@ export const chatMachine = setup({
     sendMessageHttp: sendMessageHttpActor,
     loadMoreHistory: loadMoreHistoryActor,
     httpMessageQueue: httpMessageQueueActor,
-    unlockPrivateMessage: unlockPrivateMessageActor,
   },
   actions: {
     enqueueMessage: sendTo("messageQueue", ({ event }) => event),
@@ -195,7 +193,7 @@ export const chatMachine = setup({
       };
     }),
 
-    appendSocketErrorMessage: assign(({ context }) => {
+    appendQueuedSendErrorMessage: assign(({ context }) => {
       const messages = [
         ...context.messages,
         {
@@ -213,69 +211,6 @@ export const chatMachine = setup({
       if (event.type !== "ChatQueuedHttpDone") return {};
       return applyHttpSendOutput(context, event.output);
     }),
-
-    setUnlockingPrivateMessage: assign(({ event }) => {
-      if (event.type !== "ChatUnlockPrivateMessage") return {};
-      return {
-        unlockingPrivateMessageId: event.messageId,
-        upgradePromptVisible: false,
-        upgradeReason: null,
-        upgradeHint: null,
-        upgradeDetail: null,
-      };
-    }),
-
-    applyUnlockPrivateOutput: assign(({ context, event }) => {
-      if (!("output" in event)) return {};
-      const output = event.output as unknown as {
-        messageId: string;
-        response: import("@/data/dto/chat").UnlockPrivateResponse;
-      };
-      const { messageId, response } = output;
-
-      if (response.unlocked && response.content != null) {
-        return {
-          messages: context.messages.map((message) =>
-            message.id === messageId
-              ? {
-                  ...message,
-                  content: response.content ?? message.content,
-                  locked: false,
-                  lockedPrivate: false,
-                  privateMessageHint: null,
-                  isPrivate: message.isPrivate ?? true,
-                }
-              : message,
-          ),
-          unlockingPrivateMessageId: null,
-          upgradePromptVisible: false,
-          upgradeReason: null,
-          upgradeHint: null,
-          upgradeDetail: null,
-        };
-      }
-
-      if (response.showUpgrade) {
-        return {
-          unlockingPrivateMessageId: null,
-          upgradePromptVisible: true,
-          upgradeReason: "private_message",
-          upgradeHint: null,
-          upgradeDetail: {
-            usedToday: response.privateUsedToday,
-            limit: response.privateFreeLimit,
-          },
-        };
-      }
-
-      return {
-        unlockingPrivateMessageId: null,
-      };
-    }),
-
-    clearUnlockingPrivateMessage: assign({
-      unlockingPrivateMessageId: null,
-    }),
   },
 }).createMachine({
   id: "chat",
@@ -312,7 +247,7 @@ export const chatMachine = setup({
           actions: "applyQueuedHttpOutput",
         },
         ChatQueuedSendError: {
-          actions: "appendSocketErrorMessage",
+          actions: "appendQueuedSendErrorMessage",
         },
       },
       initial: "initializing",
@@ -354,11 +289,7 @@ export const chatMachine = setup({
               actions: "appendGuestUserImage",
               target: "sending",
             },
-            ChatUnlockPrivateMessage: {
+            // 游客不支持翻页历史，发送消息统一走 HTTP 队列。
-              actions: "setUnlockingPrivateMessage",
-              target: "unlockingPrivate",
-            },
-            // 删除 ChatLoadMoreHistory / WS handlers —— 游客无服务端 history，也不连接 WS
           },
         },
         sending: {
@@ -379,23 +310,6 @@ export const chatMachine = setup({
             },
           },
         },
-        unlockingPrivate: {
-          invoke: {
-            src: "unlockPrivateMessage",
-            input: ({ event }) => ({
-              messageId:
-                event.type === "ChatUnlockPrivateMessage" ? event.messageId : "",
-            }),
-            onDone: {
-              target: "ready",
-              actions: "applyUnlockPrivateOutput",
-            },
-            onError: {
-              target: "ready",
-              actions: "clearUnlockingPrivateMessage",
-            },
-          },
-        },
       },
     },
 
@@ -421,7 +335,7 @@ export const chatMachine = setup({
           actions: "applyQueuedHttpOutput",
         },
         ChatQueuedSendError: {
-          actions: "appendSocketErrorMessage",
+          actions: "appendQueuedSendErrorMessage",
         },
       },
       initial: "initializing",
@@ -460,10 +374,6 @@ export const chatMachine = setup({
             ChatLoadMoreHistory: {
               target: "loadingMore",
             },
-            ChatUnlockPrivateMessage: {
-              actions: "setUnlockingPrivateMessage",
-              target: "unlockingPrivate",
-            },
           },
         },
         sendingViaHttp: {
@@ -503,23 +413,6 @@ export const chatMachine = setup({
             },
           },
         },
-        unlockingPrivate: {
-          invoke: {
-            src: "unlockPrivateMessage",
-            input: ({ event }) => ({
-              messageId:
-                event.type === "ChatUnlockPrivateMessage" ? event.messageId : "",
-            }),
-            onDone: {
-              target: "ready",
-              actions: "applyUnlockPrivateOutput",
-            },
-            onError: {
-              target: "ready",
-              actions: "clearUnlockingPrivateMessage",
-            },
-          },
-        },
       },
     },
   },

src/stores/chat/chat-state.ts

@@ -5,7 +5,7 @@ export interface ChatState {
   isReplyingAI: boolean;
   pendingReplyCount: number;
   upgradePromptVisible: boolean;
-  upgradeReason: "daily_limit" | "private_message" | "image" | null;
+  upgradeReason: "daily_limit" | "image" | null;
   upgradeHint: string | null;
   upgradeDetail:
     | {
@@ -15,7 +15,6 @@ export interface ChatState {
         limit?: number;
       }
     | null;
-  unlockingPrivateMessageId: string | null;
   isLoadingMore: boolean;
   hasMore: boolean;
   historyOffset: number;
@@ -34,7 +33,6 @@ export const initialState: ChatState = {
   upgradeReason: null,
   upgradeHint: null,
   upgradeDetail: null,
-  unlockingPrivateMessageId: null,
   isLoadingMore: false,
   hasMore: true,
   historyOffset: 0,