fix(chat): isolate pending flows and cancel stale requests

src/app/chat/__tests__/chat-unlock-coordinator.test.ts

@@ -20,6 +20,7 @@ const defaultScope = {
 };
 
 const promotionSession: PendingChatPromotion = {
+  characterId: "character_elio",
   promotionType: "image",
   lockType: "image_paywall",
   clientLockId: "promotion-1",
@@ -181,6 +182,7 @@ function createPendingUnlock(
 ): PendingChatUnlock {
   return {
     reason: "single_message_unlock",
+    characterId: "character_elio",
     ...input,
     stage: "auth",
     createdAt: 1,

src/app/chat/chat-screen.tsx

@@ -58,7 +58,9 @@ export function ChatScreen() {
     loginStatus: authState.loginStatus,
     messages: state.historyMessages,
   });
-  const isPromotionBootstrapReady = useChatPromotionBootstrap();
+  const isPromotionBootstrapReady = useChatPromotionBootstrap(
+    state.characterId,
+  );
   const visibleMessages = isPromotionBootstrapReady
     ? state.messages
     : state.historyMessages;

src/app/chat/hooks/use-chat-promotion-bootstrap.ts

@@ -11,7 +11,7 @@ import { Logger } from "@/utils/logger";
 
 const log = new Logger("UseChatPromotionBootstrap");
 
-export function useChatPromotionBootstrap(): boolean {
+export function useChatPromotionBootstrap(characterId: string): boolean {
   const chatDispatch = useChatDispatch();
   const startedRef = useRef(false);
   const [isReady, setIsReady] = useState(false);
@@ -23,8 +23,8 @@ export function useChatPromotionBootstrap(): boolean {
     void (async () => {
       try {
         const [entryPromotion, pendingUnlock] = await Promise.all([
-          consumePendingChatPromotion(),
+          consumePendingChatPromotion(characterId),
-          peekPendingChatUnlock(),
+          peekPendingChatUnlock(characterId),
         ]);
         const promotion = entryPromotion ?? pendingUnlock?.promotion ?? null;
 
@@ -46,7 +46,7 @@ export function useChatPromotionBootstrap(): boolean {
         setIsReady(true);
       }
     })();
-  }, [chatDispatch]);
+  }, [characterId, chatDispatch]);
 
   return isReady;
 }

src/app/chat/hooks/use-chat-unlock-coordinator.ts

@@ -79,6 +79,7 @@ export function useChatUnlockCoordinator({
   const trackedPaywallRef = useRef<string | null>(null);
   const chatState = useChatSelector(
     (state) => ({
+      characterId: state.context.characterId,
       historyLoaded: state.context.historyLoaded,
       isUnlockingHistory: state.matches({ userSession: "unlockingHistory" }),
       lockedHistoryCount: state.context.lockedHistoryCount,
@@ -125,7 +126,7 @@ export function useChatUnlockCoordinator({
     let cancelled = false;
 
     const resumePendingUnlock = async () => {
-      const pending = await peekPendingChatUnlock();
+      const pending = await peekPendingChatUnlock(chatState.characterId);
       if (
         cancelled ||
         !pending ||
@@ -138,7 +139,7 @@ export function useChatUnlockCoordinator({
         return;
       }
 
-      const consumed = await consumePendingChatUnlock();
+      const consumed = await consumePendingChatUnlock(chatState.characterId);
       if (cancelled || !consumed) return;
 
       chatDispatch({
@@ -157,6 +158,7 @@ export function useChatUnlockCoordinator({
     };
   }, [
     chatDispatch,
+    chatState.characterId,
     chatState.historyLoaded,
     defaultReturnUrl,
     enabled,

src/app/external-entry/external-entry-persist.tsx

@@ -15,6 +15,10 @@ import {
   savePendingChatPromotion,
 } from "@/lib/navigation/chat_unlock_session";
 import { ROUTES } from "@/router/routes";
+import {
+  DEFAULT_CHARACTER_ID,
+  getCharacterBySlug,
+} from "@/data/constants/character";
 import { Logger } from "@/utils/logger";
 import { useAuthDispatch, useAuthState } from "@/stores/auth/auth-context";
 
@@ -49,6 +53,8 @@ export default function ExternalEntryPersist({
   const hasReinitializedForPsidRef = useRef(false);
   const targetRoute = resolveExternalEntryTarget({ target });
   const destination = resolveExternalEntryDestination({ target, character });
+  const characterId =
+    getCharacterBySlug(character)?.id ?? DEFAULT_CHARACTER_ID;
   const resolvedPromotionType = resolveExternalEntryPromotionType({
     mode,
     promotionType,
@@ -66,7 +72,7 @@ export default function ExternalEntryPersist({
           avatarUrl,
         }),
         targetRoute === ROUTES.chat && resolvedPromotionType
-          ? savePendingChatPromotion(resolvedPromotionType)
+          ? savePendingChatPromotion(resolvedPromotionType, characterId)
           : clearPendingChatPromotion(),
       ]);
       for (const result of results) {
@@ -87,6 +93,7 @@ export default function ExternalEntryPersist({
     avatarUrl,
     asid,
     character,
+    characterId,
     destination,
     deviceId,
     mode,

src/data/repositories/chat_remote_data_source.ts

@@ -1,4 +1,8 @@
-import type { UnlockPrivateMessageInput } from "@/data/repositories/interfaces";
+import type {
+  ChatRequestOptions,
+  ChatSendOptions,
+  UnlockPrivateMessageInput,
+} from "@/data/repositories/interfaces";
 import {
   ChatHistoryResponse,
   ChatSendResponse,
@@ -17,7 +21,7 @@ export class ChatRemoteDataSource {
   async sendMessage(
     characterId: string,
     message: string,
-    options?: { image?: string; useWebSocket?: boolean },
+    options?: ChatSendOptions,
   ): Promise<Result<ChatSendResponse>> {
     return Result.wrap(async () => {
       const request = SendMessageRequestSchema.parse({
@@ -26,7 +30,7 @@ export class ChatRemoteDataSource {
         image: options?.image ?? "",
         useWebSocket: options?.useWebSocket ?? false,
       });
-      return await this.api.sendMessage(request);
+      return await this.api.sendMessage(request, options);
     });
   }
 
@@ -34,23 +38,34 @@ export class ChatRemoteDataSource {
     characterId: string,
     limit = 50,
     offset = 0,
+    options?: ChatRequestOptions,
   ): Promise<Result<ChatHistoryResponse>> {
-    return Result.wrap(() => this.api.getHistory(characterId, limit, offset));
+    return Result.wrap(() =>
+      this.api.getHistory(characterId, limit, offset, options),
+    );
   }
 
   async unlockPrivateMessage(
     input: UnlockPrivateMessageInput,
+    options?: ChatRequestOptions,
   ): Promise<Result<UnlockPrivateResponse>> {
     return Result.wrap(() =>
-      this.api.unlockPrivateMessage(UnlockPrivateRequestSchema.parse(input)),
+      this.api.unlockPrivateMessage(
+        UnlockPrivateRequestSchema.parse(input),
+        options,
+      ),
     );
   }
 
   async unlockHistory(
     characterId: string,
+    options?: ChatRequestOptions,
   ): Promise<Result<UnlockHistoryResponse>> {
     return Result.wrap(() =>
-      this.api.unlockHistory(UnlockHistoryRequestSchema.parse({ characterId })),
+      this.api.unlockHistory(
+        UnlockHistoryRequestSchema.parse({ characterId }),
+        options,
+      ),
     );
   }
 }

src/data/repositories/chat_repository.ts

@@ -1,6 +1,8 @@
 import type {
   CacheRemoteChatMediaInput,
   ChatMediaLookupInput,
+  ChatRequestOptions,
+  ChatSendOptions,
   IChatRepository,
   UnlockPrivateMessageInput,
   UnlockedPrivateMessageLocalPatch,
@@ -38,7 +40,7 @@ export class ChatRepository implements IChatRepository {
   async sendMessage(
     characterId: string,
     message: string,
-    options?: { image?: string; useWebSocket?: boolean },
+    options?: ChatSendOptions,
   ): Promise<Result<ChatSendResponse>> {
     return this.remote.sendMessage(characterId, message, options);
   }
@@ -48,22 +50,25 @@ export class ChatRepository implements IChatRepository {
     characterId: string,
     limit = 50,
     offset = 0,
+    options?: ChatRequestOptions,
   ): Promise<Result<ChatHistoryResponse>> {
-    return this.remote.getHistory(characterId, limit, offset);
+    return this.remote.getHistory(characterId, limit, offset, options);
   }
 
   /** 解锁单条历史付费 / 私密消息。 */
   async unlockPrivateMessage(
     input: UnlockPrivateMessageInput,
+    options?: ChatRequestOptions,
   ): Promise<Result<UnlockPrivateResponse>> {
-    return this.remote.unlockPrivateMessage(input);
+    return this.remote.unlockPrivateMessage(input, options);
   }
 
   /** 一键解锁历史锁定消息。 */
   async unlockHistory(
     characterId: string,
+    options?: ChatRequestOptions,
   ): Promise<Result<UnlockHistoryResponse>> {
-    return this.remote.unlockHistory(characterId);
+    return this.remote.unlockHistory(characterId, options);
   }
 
   /** 把本地缓存中的单条锁定消息标记为已解锁。 */

src/data/repositories/interfaces/ichat_repository.ts

@@ -42,12 +42,21 @@ export interface UnlockPrivateMessageInput {
   clientLockId?: string;
 }
 
+export interface ChatRequestOptions {
+  signal?: AbortSignal;
+}
+
+export interface ChatSendOptions extends ChatRequestOptions {
+  image?: string;
+  useWebSocket?: boolean;
+}
+
 export interface IChatRepository {
   /** 发送一条消息。 */
   sendMessage(
     characterId: string,
     message: string,
-    options?: { image?: string; useWebSocket?: boolean },
+    options?: ChatSendOptions,
   ): Promise<Result<ChatSendResponse>>;
 
   /** 获取聊天历史，分页参数默认 limit=50, offset=0。 */
@@ -55,15 +64,20 @@ export interface IChatRepository {
     characterId: string,
     limit?: number,
     offset?: number,
+    options?: ChatRequestOptions,
   ): Promise<Result<ChatHistoryResponse>>;
 
   /** 解锁单条历史付费 / 私密消息。 */
   unlockPrivateMessage(
     input: UnlockPrivateMessageInput,
+    options?: ChatRequestOptions,
   ): Promise<Result<UnlockPrivateResponse>>;
 
   /** 一键解锁历史锁定消息。 */
-  unlockHistory(characterId: string): Promise<Result<UnlockHistoryResponse>>;
+  unlockHistory(
+    characterId: string,
+    options?: ChatRequestOptions,
+  ): Promise<Result<UnlockHistoryResponse>>;
 
   /** 把本地缓存中的单条锁定消息标记为已解锁。 */
   markPrivateMessageUnlockedInLocal(

src/data/services/api/__tests__/multi_character_api.test.ts

@@ -59,6 +59,23 @@ describe("multi-character API contract", () => {
     });
   });
 
+  it("forwards request cancellation to the HTTP client", async () => {
+    const controller = new AbortController();
+    httpClientMock.mockResolvedValue({
+      success: true,
+      data: { messages: [], total: 0, limit: 50, offset: 0 },
+    });
+
+    await new ChatApi().getHistory(CHARACTER_ID, 50, 0, {
+      signal: controller.signal,
+    });
+
+    expect(httpClientMock).toHaveBeenCalledWith("/api/chat/history", {
+      query: { characterId: CHARACTER_ID, limit: 50, offset: 0 },
+      signal: controller.signal,
+    });
+  });
+
   it("sends characterId with private and history unlocks", async () => {
     const api = new ChatApi();
     httpClientMock

src/data/services/api/chat_api.ts

@@ -25,10 +25,14 @@ export class ChatApi {
   /**
    * 发送消息
    */
-  async sendMessage(body: SendMessageRequest): Promise<ChatSendResponse> {
+  async sendMessage(
+    body: SendMessageRequest,
+    options?: { signal?: AbortSignal },
+  ): Promise<ChatSendResponse> {
     const env = await httpClient<ApiEnvelope<unknown>>(ApiPath.chatSend, {
       method: "POST",
       body,
+      ...(options?.signal ? { signal: options.signal } : {}),
     });
     return ChatSendResponseSchema.parse(unwrap(env) as Record<string, unknown>);
   }
@@ -40,9 +44,11 @@ export class ChatApi {
     characterId: string,
     limit = 50,
     offset = 0,
+    options?: { signal?: AbortSignal },
   ): Promise<ChatHistoryResponse> {
     const env = await httpClient<ApiEnvelope<unknown>>(ApiPath.chatHistory, {
       query: { characterId, limit, offset },
+      ...(options?.signal ? { signal: options.signal } : {}),
     });
     return ChatHistoryResponseSchema.parse(
       unwrap(env) as Record<string, unknown>,
@@ -54,12 +60,14 @@ export class ChatApi {
    */
   async unlockPrivateMessage(
     body: UnlockPrivateRequest,
+    options?: { signal?: AbortSignal },
   ): Promise<UnlockPrivateResponse> {
     const env = await httpClient<ApiEnvelope<unknown>>(
       ApiPath.chatUnlockPrivate,
       {
         method: "POST",
         body,
+        ...(options?.signal ? { signal: options.signal } : {}),
       },
     );
     return UnlockPrivateResponseSchema.parse(
@@ -72,12 +80,14 @@ export class ChatApi {
    */
   async unlockHistory(
     body: UnlockHistoryRequest,
+    options?: { signal?: AbortSignal },
   ): Promise<UnlockHistoryResponse> {
     const env = await httpClient<ApiEnvelope<unknown>>(
       ApiPath.chatUnlockHistory,
       {
         method: "POST",
         body,
+        ...(options?.signal ? { signal: options.signal } : {}),
       },
     );
     return UnlockHistoryResponseSchema.parse(

src/data/storage/navigation/__tests__/navigation_storage.test.ts

@@ -6,6 +6,9 @@ import { SessionAsyncUtil } from "@/utils/session-storage";
 
 import { NavigationStorage } from "../navigation_storage";
 
+const CHARACTER_ID = "character_elio";
+const OTHER_CHARACTER_ID = "character_maya";
+
 describe("NavigationStorage", () => {
   beforeEach(() => {
     SessionAsyncUtil.setStorage(createStorage({ driver: memoryDriver() }));
@@ -14,13 +17,7 @@ describe("NavigationStorage", () => {
 
   it("saves, peeks, and consumes pending chat unlock sessions", async () => {
     await NavigationStorage.savePendingChatUnlock({
-      messageId: "msg_1",
+      characterId: CHARACTER_ID,
-      kind: "image",
-      returnUrl: "/chat?image=msg_1",
-      stage: "payment",
-    });
-
-    await expect(NavigationStorage.peekPendingChatUnlock()).resolves.toMatchObject({
       messageId: "msg_1",
       kind: "image",
       returnUrl: "/chat?image=msg_1",
@@ -28,12 +25,25 @@ describe("NavigationStorage", () => {
     });
 
     await expect(
-      NavigationStorage.consumePendingChatUnlock(),
+      NavigationStorage.peekPendingChatUnlock(CHARACTER_ID),
     ).resolves.toMatchObject({
+      characterId: CHARACTER_ID,
+      messageId: "msg_1",
+      kind: "image",
+      returnUrl: "/chat?image=msg_1",
+      stage: "payment",
+    });
+
+    await expect(
+      NavigationStorage.consumePendingChatUnlock(CHARACTER_ID),
+    ).resolves.toMatchObject({
+      characterId: CHARACTER_ID,
       messageId: "msg_1",
       kind: "image",
     });
-    await expect(NavigationStorage.peekPendingChatUnlock()).resolves.toBeNull();
+    await expect(
+      NavigationStorage.peekPendingChatUnlock(CHARACTER_ID),
+    ).resolves.toBeNull();
   });
 
   it("drops expired pending chat unlock sessions", async () => {
@@ -41,6 +51,7 @@ describe("NavigationStorage", () => {
     vi.setSystemTime(new Date("2026-07-03T00:00:00.000Z"));
 
     await NavigationStorage.savePendingChatUnlock({
+      characterId: CHARACTER_ID,
       messageId: "msg_1",
       kind: "private",
       returnUrl: "/chat",
@@ -49,25 +60,32 @@ describe("NavigationStorage", () => {
 
     vi.setSystemTime(new Date("2026-07-03T00:31:00.000Z"));
 
-    await expect(NavigationStorage.peekPendingChatUnlock()).resolves.toBeNull();
+    await expect(
+      NavigationStorage.peekPendingChatUnlock(CHARACTER_ID),
+    ).resolves.toBeNull();
   });
 
   it("stores a one-time promotion and carries it through unlock navigation", async () => {
-    const promotion = await NavigationStorage.savePendingChatPromotion("image");
+    const promotion = await NavigationStorage.savePendingChatPromotion(
+      "image",
+      CHARACTER_ID,
+    );
 
     expect(promotion).toMatchObject({
+      characterId: CHARACTER_ID,
       promotionType: "image",
       lockType: "image_paywall",
     });
     expect(promotion.clientLockId).toMatch(/^promotion_/);
     await expect(
-      NavigationStorage.consumePendingChatPromotion(),
+      NavigationStorage.consumePendingChatPromotion(CHARACTER_ID),
     ).resolves.toEqual(promotion);
     await expect(
-      NavigationStorage.consumePendingChatPromotion(),
+      NavigationStorage.consumePendingChatPromotion(CHARACTER_ID),
     ).resolves.toBeNull();
 
     await NavigationStorage.savePendingChatUnlock({
+      characterId: CHARACTER_ID,
       displayMessageId: `promotion:${promotion.clientLockId}`,
       kind: "image",
       lockType: promotion.lockType,
@@ -76,7 +94,10 @@ describe("NavigationStorage", () => {
       returnUrl: "/chat",
       stage: "auth",
     });
-    await expect(NavigationStorage.peekPendingChatUnlock()).resolves.toMatchObject({
+    await expect(
+      NavigationStorage.peekPendingChatUnlock(CHARACTER_ID),
+    ).resolves.toMatchObject({
+      characterId: CHARACTER_ID,
       lockType: "image_paywall",
       clientLockId: promotion.clientLockId,
       promotion,
@@ -85,18 +106,62 @@ describe("NavigationStorage", () => {
 
   it("saves and consumes pending chat image return sessions", async () => {
     await NavigationStorage.savePendingChatImageReturn({
+      characterId: CHARACTER_ID,
       messageId: "msg_1",
       returnUrl: "/chat?image=msg_1",
     });
 
     await expect(
-      NavigationStorage.consumePendingChatImageReturn(),
+      NavigationStorage.consumePendingChatImageReturn(CHARACTER_ID),
     ).resolves.toMatchObject({
+      characterId: CHARACTER_ID,
       messageId: "msg_1",
       returnUrl: "/chat?image=msg_1",
     });
     await expect(
-      NavigationStorage.consumePendingChatImageReturn(),
+      NavigationStorage.consumePendingChatImageReturn(CHARACTER_ID),
     ).resolves.toBeNull();
   });
+
+  it("leaves another character's pending navigation state untouched", async () => {
+    const promotion = await NavigationStorage.savePendingChatPromotion(
+      "voice",
+      CHARACTER_ID,
+    );
+    await NavigationStorage.savePendingChatUnlock({
+      characterId: CHARACTER_ID,
+      displayMessageId: `promotion:${promotion.clientLockId}`,
+      kind: "voice",
+      lockType: promotion.lockType,
+      clientLockId: promotion.clientLockId,
+      promotion,
+      returnUrl: "/characters/elio/chat",
+      stage: "auth",
+    });
+    await NavigationStorage.savePendingChatImageReturn({
+      characterId: CHARACTER_ID,
+      messageId: "msg_1",
+      returnUrl: "/characters/elio/chat?image=msg_1",
+    });
+
+    await expect(
+      NavigationStorage.consumePendingChatPromotion(OTHER_CHARACTER_ID),
+    ).resolves.toBeNull();
+    await expect(
+      NavigationStorage.consumePendingChatUnlock(OTHER_CHARACTER_ID),
+    ).resolves.toBeNull();
+    await expect(
+      NavigationStorage.consumePendingChatImageReturn(OTHER_CHARACTER_ID),
+    ).resolves.toBeNull();
+
+    await expect(
+      NavigationStorage.consumePendingChatPromotion(CHARACTER_ID),
+    ).resolves.toEqual(promotion);
+    await expect(
+      NavigationStorage.consumePendingChatUnlock(CHARACTER_ID),
+    ).resolves.toMatchObject({ characterId: CHARACTER_ID });
+    await expect(
+      NavigationStorage.consumePendingChatImageReturn(CHARACTER_ID),
+    ).resolves.toMatchObject({ characterId: CHARACTER_ID });
+  });
 });

src/data/storage/navigation/navigation_storage.ts

@@ -14,6 +14,7 @@ export type PendingChatUnlockStage = "auth" | "payment";
 export type PendingChatPromotionType = "voice" | "image" | "private";
 
 export const PendingChatPromotionSchema = z.object({
+  characterId: z.string().min(1),
   promotionType: z.enum(["voice", "image", "private"]),
   lockType: ChatLockTypeSchema,
   clientLockId: z.string().min(1),
@@ -23,6 +24,7 @@ export const PendingChatPromotionSchema = z.object({
 const PendingChatUnlockSchema = z
   .object({
     reason: z.literal("single_message_unlock"),
+    characterId: z.string().min(1),
     displayMessageId: z.string().min(1),
     messageId: z.string().min(1).optional(),
     kind: z.enum(["private", "voice", "image"]),
@@ -45,6 +47,7 @@ const PendingChatUnlockSchema = z
 
 const PendingChatImageReturnSchema = z.object({
   reason: z.literal("image_paywall"),
+  characterId: z.string().min(1),
   messageId: z.string().min(1),
   returnUrl: z
     .string()
@@ -75,6 +78,7 @@ export class NavigationStorage {
   private constructor() {}
 
   static async savePendingChatUnlock(input: {
+    characterId: string;
     displayMessageId?: string;
     messageId?: string;
     kind: PendingChatUnlockKind;
@@ -91,8 +95,15 @@ export class NavigationStorage {
     if (!displayMessageId) {
       throw new Error("displayMessageId is required");
     }
+    if (
+      input.promotion &&
+      input.promotion.characterId !== input.characterId
+    ) {
+      throw new Error("Pending promotion belongs to a different character.");
+    }
     const payload: PendingChatUnlock = {
       reason: "single_message_unlock",
+      characterId: input.characterId,
       displayMessageId,
       ...(input.messageId ? { messageId: input.messageId } : {}),
       kind: input.kind,
@@ -110,31 +121,49 @@ export class NavigationStorage {
     );
   }
 
-  static async consumePendingChatUnlock(): Promise<PendingChatUnlock | null> {
+  static async consumePendingChatUnlock(
+    characterId: string,
+  ): Promise<PendingChatUnlock | null> {
     const result = await SessionAsyncUtil.getJson(
       StorageKeys.pendingChatUnlock,
       PendingChatUnlockSchema,
     );
+    if (Result.isErr(result)) {
       await SessionAsyncUtil.remove(StorageKeys.pendingChatUnlock);
-    if (Result.isErr(result)) return null;
+      return null;
-    return NavigationStorage.parsePendingChatUnlock(result.data);
+    }
+    const value = NavigationStorage.parsePendingChatUnlock(result.data);
+    if (!value) {
+      await SessionAsyncUtil.remove(StorageKeys.pendingChatUnlock);
+      return null;
+    }
+    if (value.characterId !== characterId) return null;
+    await SessionAsyncUtil.remove(StorageKeys.pendingChatUnlock);
+    return value;
   }
 
-  static async peekPendingChatUnlock(): Promise<PendingChatUnlock | null> {
+  static async peekPendingChatUnlock(
+    characterId: string,
+  ): Promise<PendingChatUnlock | null> {
     const result = await SessionAsyncUtil.getJson(
       StorageKeys.pendingChatUnlock,
       PendingChatUnlockSchema,
     );
-    if (Result.isErr(result)) return null;
+    if (Result.isErr(result)) {
+      await SessionAsyncUtil.remove(StorageKeys.pendingChatUnlock);
+      return null;
+    }
     const value = NavigationStorage.parsePendingChatUnlock(result.data);
     if (!value) {
       await SessionAsyncUtil.remove(StorageKeys.pendingChatUnlock);
     }
-    return value;
+    return value?.characterId === characterId ? value : null;
   }
 
-  static async hasPendingChatUnlock(): Promise<boolean> {
+  static async hasPendingChatUnlock(characterId: string): Promise<boolean> {
-    return (await NavigationStorage.peekPendingChatUnlock()) !== null;
+    return (
+      (await NavigationStorage.peekPendingChatUnlock(characterId)) !== null
+    );
   }
 
   static async clearPendingChatUnlock(): Promise<void> {
@@ -143,8 +172,10 @@ export class NavigationStorage {
 
   static async savePendingChatPromotion(
     promotionType: PendingChatPromotionType,
+    characterId: string,
   ): Promise<PendingChatPromotion> {
     const promotion: PendingChatPromotion = {
+      characterId,
       promotionType,
       lockType: toPromotionLockType(promotionType),
       clientLockId: `promotion_${createUuidV4()}`,
@@ -158,14 +189,25 @@ export class NavigationStorage {
     return promotion;
   }
 
-  static async consumePendingChatPromotion(): Promise<PendingChatPromotion | null> {
+  static async consumePendingChatPromotion(
+    characterId: string,
+  ): Promise<PendingChatPromotion | null> {
     const result = await SessionAsyncUtil.getJson(
       StorageKeys.pendingChatPromotion,
       PendingChatPromotionSchema,
     );
+    if (Result.isErr(result)) {
       await SessionAsyncUtil.remove(StorageKeys.pendingChatPromotion);
-    if (Result.isErr(result)) return null;
+      return null;
-    return NavigationStorage.parsePendingChatPromotion(result.data);
+    }
+    const value = NavigationStorage.parsePendingChatPromotion(result.data);
+    if (!value) {
+      await SessionAsyncUtil.remove(StorageKeys.pendingChatPromotion);
+      return null;
+    }
+    if (value.characterId !== characterId) return null;
+    await SessionAsyncUtil.remove(StorageKeys.pendingChatPromotion);
+    return value;
   }
 
   static async clearPendingChatPromotion(): Promise<void> {
@@ -173,11 +215,13 @@ export class NavigationStorage {
   }
 
   static async savePendingChatImageReturn(input: {
+    characterId: string;
     messageId: string;
     returnUrl: string;
   }): Promise<void> {
     const payload: PendingChatImageReturn = {
       reason: "image_paywall",
+      characterId: input.characterId,
       messageId: input.messageId,
       returnUrl: input.returnUrl,
       createdAt: Date.now(),
@@ -189,14 +233,25 @@ export class NavigationStorage {
     );
   }
 
-  static async consumePendingChatImageReturn(): Promise<PendingChatImageReturn | null> {
+  static async consumePendingChatImageReturn(
+    characterId: string,
+  ): Promise<PendingChatImageReturn | null> {
     const result = await SessionAsyncUtil.getJson(
       StorageKeys.pendingChatImageReturn,
       PendingChatImageReturnSchema,
     );
+    if (Result.isErr(result)) {
       await SessionAsyncUtil.remove(StorageKeys.pendingChatImageReturn);
-    if (Result.isErr(result)) return null;
+      return null;
-    return NavigationStorage.parsePendingChatImageReturn(result.data);
+    }
+    const value = NavigationStorage.parsePendingChatImageReturn(result.data);
+    if (!value) {
+      await SessionAsyncUtil.remove(StorageKeys.pendingChatImageReturn);
+      return null;
+    }
+    if (value.characterId !== characterId) return null;
+    await SessionAsyncUtil.remove(StorageKeys.pendingChatImageReturn);
+    return value;
   }
 
   private static parsePendingChatUnlock(

src/lib/navigation/__tests__/subscription_exit.test.ts

@@ -39,6 +39,7 @@ describe("subscription exit helpers", () => {
   it("uses explicit chat image return urls first", async () => {
     consumePendingChatImageReturnMock.mockResolvedValue({
       reason: "image_paywall",
+      characterId: "character_elio",
       messageId: "msg_1",
       returnUrl: "/chat?image=msg_1",
       createdAt: 1,
@@ -73,12 +74,14 @@ describe("subscription exit helpers", () => {
   it("returns directly to private room without consuming chat state", async () => {
     consumePendingChatImageReturnMock.mockResolvedValue({
       reason: "image_paywall",
+      characterId: "character_elio",
       messageId: "msg_1",
       returnUrl: "/chat?image=msg_1",
       createdAt: 1,
     });
     peekPendingChatUnlockMock.mockResolvedValue({
       reason: "single_message_unlock",
+      characterId: "character_elio",
       displayMessageId: "msg_1",
       messageId: "msg_1",
       kind: "image",
@@ -101,6 +104,7 @@ describe("subscription exit helpers", () => {
   it("keeps private room ahead of stale chat state after payment", async () => {
     peekPendingChatUnlockMock.mockResolvedValue({
       reason: "single_message_unlock",
+      characterId: "character_elio",
       displayMessageId: "msg_1",
       messageId: "msg_1",
       kind: "image",
@@ -119,6 +123,7 @@ describe("subscription exit helpers", () => {
   it("keeps pending chat unlocks ahead of chat fallback after payment", async () => {
     peekPendingChatUnlockMock.mockResolvedValue({
       reason: "single_message_unlock",
+      characterId: "character_elio",
       displayMessageId: "msg_1",
       messageId: "msg_1",
       kind: "image",
@@ -136,6 +141,7 @@ describe("subscription exit helpers", () => {
   it("peeks chat unlock return urls without clearing them", async () => {
     peekPendingChatUnlockMock.mockResolvedValue({
       reason: "single_message_unlock",
+      characterId: "character_elio",
       displayMessageId: "msg_1",
       messageId: "msg_1",
       kind: "image",
@@ -154,6 +160,7 @@ describe("subscription exit helpers", () => {
     consumePendingChatImageReturnMock.mockResolvedValue(null);
     peekPendingChatUnlockMock.mockResolvedValue({
       reason: "single_message_unlock",
+      characterId: "character_elio",
       displayMessageId: "msg_1",
       messageId: "msg_1",
       kind: "image",

src/lib/navigation/chat_image_return_session.ts

@@ -8,12 +8,15 @@ import {
 export type { PendingChatImageReturn };
 
 export async function savePendingChatImageReturn(input: {
+  characterId: string;
   messageId: string;
   returnUrl: string;
 }): Promise<void> {
   await NavigationStorage.savePendingChatImageReturn(input);
 }
 
-export async function consumePendingChatImageReturn(): Promise<PendingChatImageReturn | null> {
+export async function consumePendingChatImageReturn(
-  return NavigationStorage.consumePendingChatImageReturn();
+  characterId: string,
+): Promise<PendingChatImageReturn | null> {
+  return NavigationStorage.consumePendingChatImageReturn(characterId);
 }

src/lib/navigation/chat_unlock_session.ts

@@ -18,6 +18,7 @@ export type {
 };
 
 export async function savePendingChatUnlock(input: {
+  characterId: string;
   displayMessageId?: string;
   messageId?: string;
   kind: PendingChatUnlockKind;
@@ -30,16 +31,20 @@ export async function savePendingChatUnlock(input: {
   await NavigationStorage.savePendingChatUnlock(input);
 }
 
-export async function consumePendingChatUnlock(): Promise<PendingChatUnlock | null> {
+export async function consumePendingChatUnlock(
-  return NavigationStorage.consumePendingChatUnlock();
+  characterId: string,
+): Promise<PendingChatUnlock | null> {
+  return NavigationStorage.consumePendingChatUnlock(characterId);
 }
 
-export async function peekPendingChatUnlock(): Promise<PendingChatUnlock | null> {
+export async function peekPendingChatUnlock(
-  return NavigationStorage.peekPendingChatUnlock();
+  characterId: string,
+): Promise<PendingChatUnlock | null> {
+  return NavigationStorage.peekPendingChatUnlock(characterId);
 }
 
-export async function hasPendingChatUnlock(): Promise<boolean> {
+export async function hasPendingChatUnlock(characterId: string): Promise<boolean> {
-  return NavigationStorage.hasPendingChatUnlock();
+  return NavigationStorage.hasPendingChatUnlock(characterId);
 }
 
 export async function clearPendingChatUnlock(): Promise<void> {
@@ -48,12 +53,15 @@ export async function clearPendingChatUnlock(): Promise<void> {
 
 export async function savePendingChatPromotion(
   promotionType: PendingChatPromotionType,
+  characterId: string,
 ): Promise<PendingChatPromotion> {
-  return NavigationStorage.savePendingChatPromotion(promotionType);
+  return NavigationStorage.savePendingChatPromotion(promotionType, characterId);
 }
 
-export async function consumePendingChatPromotion(): Promise<PendingChatPromotion | null> {
+export async function consumePendingChatPromotion(
-  return NavigationStorage.consumePendingChatPromotion();
+  characterId: string,
+): Promise<PendingChatPromotion | null> {
+  return NavigationStorage.consumePendingChatPromotion(characterId);
 }
 
 export async function clearPendingChatPromotion(): Promise<void> {

src/lib/navigation/subscription_exit.ts

@@ -1,6 +1,10 @@
 "use client";
 
-import { DEFAULT_CHARACTER_SLUG } from "@/data/constants/character";
+import {
+  DEFAULT_CHARACTER_ID,
+  DEFAULT_CHARACTER_SLUG,
+  getCharacterBySlug,
+} from "@/data/constants/character";
 import { getCharacterRoutes } from "@/router/routes";
 import type { AppSubscriptionReturnTo } from "@/router/navigation-types";
 
@@ -12,10 +16,13 @@ import {
 
 export type SubscriptionReturnTo = AppSubscriptionReturnTo;
 
-export async function consumeSubscriptionExplicitExitUrl(): Promise<string | null> {
+export async function consumeSubscriptionExplicitExitUrl(
-  const pendingImageReturn = await consumePendingChatImageReturn();
+  characterSlug: string = DEFAULT_CHARACTER_SLUG,
+): Promise<string | null> {
+  const characterId = resolveCharacterId(characterSlug);
+  const pendingImageReturn = await consumePendingChatImageReturn(characterId);
   if (pendingImageReturn) return pendingImageReturn.returnUrl;
-  const pendingChatUnlock = await peekPendingChatUnlock();
+  const pendingChatUnlock = await peekPendingChatUnlock(characterId);
   if (pendingChatUnlock) {
     await clearPendingChatUnlock();
     return pendingChatUnlock.returnUrl;
@@ -23,8 +30,12 @@ export async function consumeSubscriptionExplicitExitUrl(): Promise<string | nul
   return null;
 }
 
-export async function peekSubscriptionExplicitExitUrl(): Promise<string | null> {
+export async function peekSubscriptionExplicitExitUrl(
-  const pendingChatUnlock = await peekPendingChatUnlock();
+  characterSlug: string = DEFAULT_CHARACTER_SLUG,
+): Promise<string | null> {
+  const pendingChatUnlock = await peekPendingChatUnlock(
+    resolveCharacterId(characterSlug),
+  );
   if (pendingChatUnlock) return pendingChatUnlock.returnUrl;
   return null;
 }
@@ -48,7 +59,7 @@ export async function consumeSubscriptionExitUrl(
   }
 
   return (
-    (await consumeSubscriptionExplicitExitUrl()) ??
+    (await consumeSubscriptionExplicitExitUrl(characterSlug)) ??
     getSubscriptionFallbackExitUrl(returnTo, characterSlug)
   );
 }
@@ -61,7 +72,11 @@ export async function resolveSubscriptionSuccessExitUrl(
     return getCharacterRoutes(characterSlug).privateRoom;
   }
 
-  const pendingExitUrl = await peekSubscriptionExplicitExitUrl();
+  const pendingExitUrl = await peekSubscriptionExplicitExitUrl(characterSlug);
   if (pendingExitUrl) return pendingExitUrl;
   return consumeSubscriptionExitUrl(returnTo, characterSlug);
 }
+
+function resolveCharacterId(characterSlug: string): string {
+  return getCharacterBySlug(characterSlug)?.id ?? DEFAULT_CHARACTER_ID;
+}

src/router/use-app-navigator.ts

@@ -153,6 +153,7 @@ export function useAppNavigator(): AppNavigator {
 
       void (async () => {
         await NavigationStorage.savePendingChatUnlock({
+          characterId: character.id,
           displayMessageId,
           messageId,
           kind,
@@ -165,7 +166,7 @@ export function useAppNavigator(): AppNavigator {
         router.push(ROUTE_BUILDERS.authWithRedirect(returnUrl));
       })();
     },
-    [isAuthenticatedUser, router],
+    [character.id, isAuthenticatedUser, router],
   );
 
   const openSubscriptionForPendingUnlock = useCallback(
@@ -183,6 +184,7 @@ export function useAppNavigator(): AppNavigator {
     }: OpenSubscriptionForPendingUnlockInput): void => {
       void (async () => {
         await NavigationStorage.savePendingChatUnlock({
+          characterId: character.id,
           displayMessageId,
           messageId,
           kind,
@@ -200,7 +202,7 @@ export function useAppNavigator(): AppNavigator {
         });
       })();
     },
-    [getDefaultPayChannel, openSubscription],
+    [character.id, getDefaultPayChannel, openSubscription],
   );
 
   const exitSubscription = useCallback(

src/stores/chat/__tests__/chat-actor-cancellation.test.ts

@@ -0,0 +1,100 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { createActor } from "xstate";
+
+const repository = vi.hoisted(() => ({
+  prefetchMediaForSendResponse: vi.fn(async () => ({
+    success: true as const,
+    data: undefined,
+  })),
+  sendMessage: vi.fn(),
+  unlockHistory: vi.fn(),
+}));
+
+const historySync = vi.hoisted(() => ({
+  readAndSyncHistory: vi.fn(),
+  readLocalHistorySnapshot: vi.fn(async () => ({
+    messages: [],
+    localCount: 0,
+  })),
+  resolveHistoryCacheIdentity: vi.fn(async () => null),
+  syncNetworkHistory: vi.fn(),
+}));
+
+vi.mock("@/data/repositories/chat_repository_loader", () => ({
+  loadChatRepository: vi.fn(async () => repository),
+}));
+
+vi.mock("@/data/repositories/chat_cache_identity", () => ({
+  resolveChatConversationKey: vi.fn(async () => ({
+    success: true,
+    data: "user:test::character:character_elio",
+  })),
+}));
+
+vi.mock("@/stores/chat/chat-history-sync", () => historySync);
+
+import { loadHistoryActor } from "@/stores/chat/machine/actors/history";
+import { sendMessageHttpActor } from "@/stores/chat/machine/actors/send";
+import { unlockHistoryActor } from "@/stores/chat/machine/actors/unlock";
+
+describe("chat actor request cancellation", () => {
+  beforeEach(() => {
+    repository.sendMessage.mockReset();
+    repository.unlockHistory.mockReset();
+    historySync.syncNetworkHistory.mockReset();
+  });
+
+  it("aborts an in-flight send request when its actor stops", async () => {
+    repository.sendMessage.mockImplementation(() => new Promise(() => undefined));
+    const actor = createActor(sendMessageHttpActor, {
+      input: { characterId: "character_elio", content: "hello" },
+    }).start();
+    await vi.waitFor(() => expect(repository.sendMessage).toHaveBeenCalled());
+
+    const signal = getSignal(repository.sendMessage.mock.calls[0]?.[2]);
+    expect(signal.aborted).toBe(false);
+    actor.stop();
+    expect(signal.aborted).toBe(true);
+  });
+
+  it("aborts an in-flight history request when its callback actor stops", async () => {
+    historySync.syncNetworkHistory.mockImplementation(
+      () => new Promise(() => undefined),
+    );
+    const actor = createActor(loadHistoryActor, {
+      input: { characterId: "character_elio" },
+    }).start();
+    await vi.waitFor(() =>
+      expect(historySync.syncNetworkHistory).toHaveBeenCalled(),
+    );
+
+    const signal = getSignal(
+      historySync.syncNetworkHistory.mock.calls[0]?.[3],
+    );
+    expect(signal.aborted).toBe(false);
+    actor.stop();
+    expect(signal.aborted).toBe(true);
+  });
+
+  it("aborts an in-flight unlock request when its actor stops", async () => {
+    repository.unlockHistory.mockImplementation(
+      () => new Promise(() => undefined),
+    );
+    const actor = createActor(unlockHistoryActor, {
+      input: { characterId: "character_elio" },
+    }).start();
+    await vi.waitFor(() => expect(repository.unlockHistory).toHaveBeenCalled());
+
+    const signal = getSignal(repository.unlockHistory.mock.calls[0]?.[1]);
+    expect(signal.aborted).toBe(false);
+    actor.stop();
+    expect(signal.aborted).toBe(true);
+  });
+});
+
+function getSignal(options: unknown): AbortSignal {
+  if (options instanceof AbortSignal) return options;
+  const signal = (options as { signal?: AbortSignal } | undefined)?.signal;
+  if (!signal) throw new Error("Missing AbortSignal");
+  return signal;
+}

src/stores/chat/__tests__/chat-promotion.test.ts

@@ -9,6 +9,7 @@ import {
 } from "@/stores/chat/helper/promotion";
 
 const promotion: PendingChatPromotion = {
+  characterId: "character_elio",
   promotionType: "image",
   lockType: "image_paywall",
   clientLockId: "promotion-1",

src/stores/chat/__tests__/chat-session-flow.test.ts

@@ -80,6 +80,7 @@ describe("chat session flow", () => {
     actor.send({
       type: "ChatPromotionInjected",
       promotion: {
+        characterId: "character_elio",
         promotionType: "voice",
         lockType: "voice_message",
         clientLockId: "promotion-1",

src/stores/chat/chat-history-sync.ts

@@ -4,6 +4,7 @@ import { loadChatRepository } from "@/data/repositories/chat_repository_loader";
 import { Logger } from "@/utils/logger";
 import { Result } from "@/utils/result";
 import { todayString } from "@/utils/date";
+import { isAbortError } from "@/utils/abort";
 
 import { CHAT_HISTORY_LIMIT } from "./helper/history";
 import { localMessagesToUi } from "./helper/message-mappers";
@@ -81,6 +82,7 @@ export async function syncNetworkHistory(
   characterId: string,
   localCount: number,
   cacheIdentity: string | null,
+  signal?: AbortSignal,
 ): Promise<NetworkHistorySyncOutput | null> {
   const chatRepo = await loadChatRepository();
   const greetingMessage = createGreetingMessage();
@@ -89,13 +91,16 @@ export async function syncNetworkHistory(
     characterId,
     CHAT_HISTORY_LIMIT,
     0,
+    { signal },
   );
   if (Result.isErr(networkResult)) {
+    if (isAbortError(networkResult.error)) throw networkResult.error;
     log.error("[chat-machine] loadHistory NETWORK FAILED", {
       error: networkResult.error,
     });
     return null;
   }
+  signal?.throwIfAborted();
 
   const networkUi = localMessagesToUi(networkResult.data.messages);
   log.debug("[chat-machine] loadHistory NETWORK DONE", {
@@ -144,6 +149,7 @@ export async function syncNetworkHistory(
  */
 export async function readAndSyncHistory(
   characterId: string,
+  signal?: AbortSignal,
 ): Promise<ReadAndSyncHistoryOutput> {
   const cacheIdentity = await resolveHistoryCacheIdentity(characterId);
   const localSnapshot = await readLocalHistorySnapshot(cacheIdentity);
@@ -151,6 +157,7 @@ export async function readAndSyncHistory(
     characterId,
     localSnapshot.localCount,
     cacheIdentity,
+    signal,
   );
   if (networkSnapshot) return networkSnapshot;
 

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

@@ -4,6 +4,7 @@ import type { UiMessage } from "@/stores/chat/ui-message";
 import { loadChatRepository } from "@/data/repositories/chat_repository_loader";
 import { Logger } from "@/utils/logger";
 import { Result } from "@/utils/result";
+import { isAbortError } from "@/utils/abort";
 
 import {
   readLocalHistorySnapshot,
@@ -38,6 +39,7 @@ export const loadHistoryActor = fromCallback<
   ChatHistoryActorInput
 >(({ input, sendBack }) => {
   let cancelled = false;
+  const controller = new AbortController();
 
   void (async () => {
     const cacheIdentity = await resolveHistoryCacheIdentity(input.characterId);
@@ -52,6 +54,7 @@ export const loadHistoryActor = fromCallback<
       input.characterId,
       localSnapshot.localCount,
       cacheIdentity,
+      controller.signal,
     );
     if (cancelled || !networkSnapshot) return;
     sendBack({
@@ -59,13 +62,14 @@ export const loadHistoryActor = fromCallback<
       output: networkSnapshot,
     });
   })().catch((error: unknown) => {
-    if (cancelled) return;
+    if (cancelled || isAbortError(error)) return;
     log.error("[chat-machine] loadHistoryActor failed", { error });
     sendBack({ type: "ChatHistoryLoadFailed", error });
   });
 
   return () => {
     cancelled = true;
+    controller.abort();
   };
 });
 
@@ -74,10 +78,13 @@ export const loadMoreHistoryActor =
     ({ input, receive, sendBack }) => {
       let cancelled = false;
       let running = false;
+      let activeController: AbortController | null = null;
 
       receive((event) => {
         if (running || cancelled) return;
         running = true;
+        const controller = new AbortController();
+        activeController = controller;
 
         void (async () => {
           const chatRepo = await loadChatRepository();
@@ -85,6 +92,7 @@ export const loadMoreHistoryActor =
             input.characterId,
             event.limit,
             event.offset,
+            { signal: controller.signal },
           );
           if (Result.isErr(historyResult)) throw historyResult.error;
           if (cancelled) return;
@@ -111,17 +119,19 @@ export const loadMoreHistoryActor =
           );
         })()
           .catch((error: unknown) => {
-            if (cancelled) return;
+            if (cancelled || isAbortError(error)) return;
             log.warn("[chat-machine] loadMoreHistoryActor failed", { error });
             sendBack({ type: "ChatOlderHistoryLoadFailed", error });
           })
           .finally(() => {
+            if (activeController === controller) activeController = null;
             running = false;
           });
       });
 
       return () => {
         cancelled = true;
+        activeController?.abort();
       };
     },
   );

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

@@ -7,6 +7,7 @@ import { loadChatRepository } from "@/data/repositories/chat_repository_loader";
 import { resolveChatConversationKey } from "@/data/repositories/chat_cache_identity";
 import { Logger } from "@/utils/logger";
 import { Result } from "@/utils/result";
+import { isAbortError } from "@/utils/abort";
 
 import type { ChatEvent } from "../../chat-events";
 import { sendResponseToUiMessage } from "../../helper/message-mappers";
@@ -18,8 +19,8 @@ type UiMessage = import("@/stores/chat/ui-message").UiMessage;
 export const sendMessageHttpActor = fromPromise<
   { response: ChatSendResponse; reply: UiMessage | null },
   { characterId: string; content: string }
->(async ({ input }) => {
+>(async ({ input, signal }) => {
-  return sendMessageViaHttp(input.characterId, input.content);
+  return sendMessageViaHttp(input.characterId, input.content, signal);
 });
 
 export const httpMessageQueueActor = fromCallback<
@@ -37,13 +38,21 @@ function createMessageQueueActor(
   receive: (listener: (event: ChatEvent) => void) => void,
 ): () => void {
   const queue = new MessageQueue();
+  let activeController: AbortController | null = null;
 
   queue.setConsumer(async (content) => {
+    const controller = new AbortController();
+    activeController = controller;
     sendBack({ type: "ChatQueuedSendStarted" });
     try {
-      const output = await sendMessageViaHttp(characterId, content);
+      const output = await sendMessageViaHttp(
+        characterId,
+        content,
+        controller.signal,
+      );
       sendBack({ type: "ChatQueuedHttpDone", output });
     } catch (error) {
+      if (isAbortError(error)) return;
       const errorMessage = ExceptionHandler.message(error);
       log.error("[chat-machine] message queue send failed", {
         error,
@@ -53,6 +62,8 @@ function createMessageQueueActor(
         content,
         errorMessage,
       });
+    } finally {
+      if (activeController === controller) activeController = null;
     }
   });
 
@@ -63,22 +74,31 @@ function createMessageQueueActor(
     queue.enqueue(content);
   });
 
-  return () => queue.dispose();
+  return () => {
+    activeController?.abort();
+    queue.dispose();
+  };
 }
 
-async function sendMessageViaHttp(characterId: string, content: string): Promise<{
+async function sendMessageViaHttp(
+  characterId: string,
+  content: string,
+  signal?: AbortSignal,
+): Promise<{
   response: ChatSendResponse;
   reply: UiMessage | null;
 }> {
   const chatRepo = await loadChatRepository();
   const cacheIdentityResult = await resolveChatConversationKey(characterId);
-  const result = await chatRepo.sendMessage(characterId, content);
+  const result = await chatRepo.sendMessage(characterId, content, { signal });
   if (Result.isErr(result)) {
+    if (isAbortError(result.error)) throw result.error;
     log.error("[chat-machine] sendMessageHttpActor failed", {
       error: result.error,
     });
     throw result.error;
   }
+  signal?.throwIfAborted();
   if (Result.isOk(cacheIdentityResult)) {
     void chatRepo.prefetchMediaForSendResponse(
       result.data,

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

@@ -4,6 +4,7 @@ import { loadChatRepository } from "@/data/repositories/chat_repository_loader";
 import { resolveChatConversationKey } from "@/data/repositories/chat_cache_identity";
 import { Logger } from "@/utils/logger";
 import { Result } from "@/utils/result";
+import { isAbortError } from "@/utils/abort";
 
 import { readAndSyncHistory } from "../../chat-history-sync";
 import {
@@ -25,17 +26,21 @@ export interface UnlockHistoryOutput {
 export const unlockHistoryActor = fromPromise<
   UnlockHistoryOutput,
   { characterId: string }
->(async ({ input }) => {
+>(async ({ input, signal }) => {
   const chatRepo = await loadChatRepository();
-  const unlockResult = await chatRepo.unlockHistory(input.characterId);
+  const unlockResult = await chatRepo.unlockHistory(input.characterId, {
+    signal,
+  });
   if (Result.isErr(unlockResult)) {
+    if (isAbortError(unlockResult.error)) throw unlockResult.error;
     log.error("[chat-machine] unlockHistoryActor failed", {
       error: unlockResult.error,
     });
     throw unlockResult.error;
   }
 
-  const history = await readAndSyncHistory(input.characterId);
+  signal.throwIfAborted();
+  const history = await readAndSyncHistory(input.characterId, signal);
   return {
     unlocked: unlockResult.data.unlocked,
     reason: unlockResult.data.reason,
@@ -47,18 +52,22 @@ export const unlockHistoryActor = fromPromise<
 export const unlockMessageActor = fromPromise<
   UnlockMessageOutput,
   UnlockMessageRequest & { characterId: string }
->(async ({ input }) => {
+>(async ({ input, signal }) => {
   const chatRepo = await loadChatRepository();
   const cacheIdentityResult = await resolveChatConversationKey(
     input.characterId,
   );
-  const unlockResult = await chatRepo.unlockPrivateMessage({
+  const unlockResult = await chatRepo.unlockPrivateMessage(
+    {
       characterId: input.characterId,
       ...(input.messageId ? { messageId: input.messageId } : {}),
       ...(input.lockType ? { lockType: input.lockType } : {}),
       ...(input.clientLockId ? { clientLockId: input.clientLockId } : {}),
-  });
+    },
+    { signal },
+  );
   if (Result.isErr(unlockResult)) {
+    if (isAbortError(unlockResult.error)) throw unlockResult.error;
     log.error("[chat-machine] unlockMessageActor failed", {
       messageId: input.messageId,
       clientLockId: input.clientLockId,
@@ -66,6 +75,7 @@ export const unlockMessageActor = fromPromise<
     });
     throw unlockResult.error;
   }
+  signal.throwIfAborted();
 
   if (
     unlockResult.data.unlocked &&

src/stores/sync/chat-payment-success-sync.tsx

@@ -5,7 +5,10 @@ import { useEffect, useRef } from "react";
 import { shallowEqual } from "@xstate/react";
 
 import { hasPendingChatUnlock } from "@/lib/navigation/chat_unlock_session";
-import { useChatDispatch } from "@/stores/chat/chat-context";
+import {
+  useChatDispatch,
+  useChatSelector,
+} from "@/stores/chat/chat-context";
 import { usePaymentSelector } from "@/stores/payment/payment-context";
 
 export function ChatPaymentSuccessSync() {
@@ -17,6 +20,7 @@ export function ChatPaymentSuccessSync() {
     }),
     shallowEqual,
   );
+  const characterId = useChatSelector((state) => state.context.characterId);
   const chatDispatch = useChatDispatch();
   const lastPaidKeyRef = useRef<string | null>(null);
 
@@ -29,7 +33,7 @@ export function ChatPaymentSuccessSync() {
 
     let cancelled = false;
     void (async () => {
-      if (await hasPendingChatUnlock()) return;
+      if (await hasPendingChatUnlock(characterId)) return;
       if (!cancelled) chatDispatch({ type: "ChatPaymentSucceeded" });
     })();
 
@@ -38,6 +42,7 @@ export function ChatPaymentSuccessSync() {
     };
   }, [
     chatDispatch,
+    characterId,
     paymentState.currentOrderId,
     paymentState.isPaid,
     paymentState.orderStatus,

src/utils/__tests__/abort.test.ts

@@ -0,0 +1,20 @@
+import { describe, expect, it } from "vitest";
+
+import { isAbortError } from "@/utils/abort";
+import { Result } from "@/utils/result";
+
+describe("isAbortError", () => {
+  it("recognizes cancellation after Result normalizes the error", async () => {
+    const result = await Result.wrap(async () => {
+      throw new DOMException("This operation was aborted", "AbortError");
+    });
+
+    expect(Result.isErr(result) && isAbortError(result.error)).toBe(true);
+  });
+
+  it("does not treat request timeouts as actor cancellation", () => {
+    expect(isAbortError(new DOMException("Timed out", "TimeoutError"))).toBe(
+      false,
+    );
+  });
+});

src/utils/abort.ts

@@ -0,0 +1,6 @@
+export function isAbortError(error: unknown): boolean {
+  if (!(error instanceof Error)) return false;
+  if (error.name === "AbortError") return true;
+  const cause = error.cause;
+  return cause !== error && isAbortError(cause);
+}