refactor(auth): unify Facebook and Google login into AuthPlatform class

Replace the separate FacebookLogin and GoogleLogin classes with a single
AuthPlatform class that takes a provider name ("facebook" | "google") as a
constructor argument. This consolidates duplicate OAuth sign-in logic behind
one entry point while preserving the existing NextAuth flow.

- Add new src/lib/auth/auth_platform.ts exporting AuthPlatform and
  AuthProvider type
- Update auth-facebook-panel.tsx and splash-button.tsx to use the new API
- Rename initialContext → initialState in the auth machine for consistency
- Update inline docs and comments to reference AuthPlatform

No behavioral change for end users; both providers still route through
NextAuth's signIn() with the same callbacks and cookies.

src/app/auth/components/auth-facebook-panel.tsx

@@ -7,13 +7,13 @@
  * 视觉规格（与 Dart 对齐）：
  *   - Spacer → logo（120h）→ Spacer → Facebook 主按钮 → 链接 → Spacer → 法律
  *   - Facebook 主按钮：46px 白胶囊 + Facebook "f" 图标（#1877f2）+ "Login with Facebook"
- *   - 社交登录走 NextAuth：`new FacebookLogin().signIn()` / `new GoogleLogin().signIn()`
+ *   - 社交登录走 NextAuth：`new AuthPlatform("facebook").signIn()` / `new AuthPlatform("google").signIn()`
  *   - "Other Sign-in Options" 链接打开底部弹层
  *   - 弹层 Email 按钮 → 触发 `onSwitchToEmail`（父级派发 `AuthPanelModeChanged`）
  */
 import { useState } from "react";
 
-import { FacebookLogin, GoogleLogin } from "@/lib/auth/nextauth";
+import { AuthPlatform } from "@/lib/auth/nextauth";
 
 import { AuthErrorMessage } from "./auth-error-message";
 import { AuthLegalText } from "./auth-legal-text";
@@ -33,7 +33,7 @@ export function AuthFacebookPanel({ onSwitchToEmail }: AuthFacebookPanelProps) {
     setBusy("facebook");
     setError(null);
     try {
-      await new FacebookLogin().signIn();
+      await new AuthPlatform("facebook").signIn();
     } catch (e) {
       setError(e instanceof Error ? e.message : "Facebook login failed");
     } finally {
@@ -45,7 +45,7 @@ export function AuthFacebookPanel({ onSwitchToEmail }: AuthFacebookPanelProps) {
     setBusy("google");
     setError(null);
     try {
-      await new GoogleLogin().signIn();
+      await new AuthPlatform("google").signIn();
     } catch (e) {
       setError(e instanceof Error ? e.message : "Google login failed");
     } finally {

src/app/splash/components/splash-button.tsx

@@ -11,7 +11,7 @@
  *   - 消费 `useChatDispatch` / `useUserDispatch`（登录成功后初始化）
  *   - 自管路由跳转（已登录 / 登录成功 → /chat）
  *   - Skip 用 `<Link>` 保留 SPA 体验
- *   - 社交登录按钮走 `new FacebookLogin().signIn()`（NextAuth 流程）
+ *   - 社交登录按钮走 `new AuthPlatform("facebook").signIn()`（NextAuth 流程）
  */
 import Link from "next/link";
 import { useRouter } from "next/navigation";
@@ -20,7 +20,7 @@ import { useEffect, useRef } from "react";
 import { useAuthState } from "@/stores/auth/auth-context";
 import { useChatDispatch } from "@/stores/chat/chat-context";
 import { useUserDispatch } from "@/stores/user/user-context";
-import { FacebookLogin } from "@/lib/auth/nextauth";
+import { AuthPlatform } from "@/lib/auth/nextauth";
 import { ROUTES } from "@/router/routes";
 import { LoadingIndicator } from "@/app/_components/core/loading-indicator";
 import styles from "./splash-button.module.css";
@@ -53,7 +53,7 @@ export function SplashButton() {
 
   const handleFacebookLogin = async () => {
     try {
-      await new FacebookLogin().signIn();
+      await new AuthPlatform("facebook").signIn();
     } catch (e) {
       console.error("[splash-button] Facebook login failed", e);
     }

src/lib/auth/auth_platform.ts

@@ -0,0 +1,31 @@
+"use client";
+/**
+ * AuthPlatform 统一 OAuth 登录入口
+ *
+ * 合并自原 FacebookLogin / GoogleLogin 两个类。
+ * 构造时传入 provider 名，调用 signIn() 触发 NextAuth OAuth 流程。
+ *
+ * 用法：
+ *   await new AuthPlatform("facebook").signIn()
+ *   await new AuthPlatform("google").signIn()
+ *
+ * NextAuth 流程：
+ *   1. NextAuth 重定向到 provider OAuth 授权页
+ *   2. 用户授权 → 回调 /api/auth/callback/{provider}
+ *   3. NextAuth 写 next-auth.session-token (httpOnly) cookie
+ *   4. 重定向到 callbackUrl (默认 /chat)
+ *
+ * **不**做任何持久化（不写 unstorage / 不调后端 / 不设自定义 cookie）。
+ * 原始 Dart: nextauth-helpers.{facebookLogin, googleLogin}()
+ */
+import { signIn } from "next-auth/react";
+
+export type AuthProvider = "facebook" | "google";
+
+export class AuthPlatform {
+  constructor(private readonly provider: AuthProvider) {}
+
+  async signIn(): Promise<void> {
+    await signIn(this.provider);
+  }
+}

src/lib/auth/facebook_login.ts

@@ -1,20 +0,0 @@
-"use client";
-/**
- * Facebook 登录（NextAuth OAuth 流程触发器）
- *
- * 调用 `signIn("facebook")` 触发 NextAuth 的 OAuth 流程：
- *   1. NextAuth 重定向到 Facebook OAuth 授权页
- *   2. 用户授权 → Facebook 回调 /api/auth/callback/facebook
- *   3. NextAuth 写 `next-auth.session-token` (httpOnly) cookie
- *   4. 重定向到 callbackUrl (默认 /chat)
- *
- * **不**做任何持久化（不写 unstorage / 不调后端 / 不设自定义 cookie）。
- * 原始 Dart: nextauth-helpers.facebookLogin()
- */
-import { signIn } from "next-auth/react";
-
-export class FacebookLogin {
-  async signIn(): Promise<void> {
-    await signIn("facebook");
-  }
-}

src/lib/auth/google_login.ts

@@ -1,20 +0,0 @@
-"use client";
-/**
- * Google 登录（NextAuth OAuth 流程触发器）
- *
- * 调用 `signIn("google")` 触发 NextAuth 的 OAuth 流程：
- *   1. NextAuth 重定向到 Google OAuth 授权页
- *   2. 用户授权 → Google 回调 /api/auth/callback/google
- *   3. NextAuth 写 `next-auth.session-token` (httpOnly) cookie
- *   4. 重定向到 callbackUrl (默认 /chat)
- *
- * **不**做任何持久化（不写 unstorage / 不调后端 / 不设自定义 cookie）。
- * 原始 Dart: nextauth-helpers.googleLogin()
- */
-import { signIn } from "next-auth/react";
-
-export class GoogleLogin {
-  async signIn(): Promise<void> {
-    await signIn("google");
-  }
-}

src/lib/auth/nextauth.ts

@@ -2,14 +2,14 @@
  * NextAuth v4 配置（单一来源）
  *
  * 极简模式：参考 `auth.js` 官方示例的**精神**（不做任何持久化），但保留 v4 语法：
- *   - 客户端点击登录按钮 → `new GoogleLogin().signIn()` / `new FacebookLogin().signIn()`
+ *   - 客户端点击登录按钮 → `new AuthPlatform("google").signIn()` / `new AuthPlatform("facebook").signIn()`
  *   - NextAuth 重定向到 Google / Facebook OAuth
  *   - OAuth 回调 → NextAuth 写 `next-auth.session-token` (httpOnly) cookie
  *   - 重定向到 callbackUrl (默认 /chat)
  *   - 业务 token 持久化（unstorage / 后端 / 自定义 cookie）**全部不在本轮 scope**
  *
  * 导出 `GET` / `POST` 给 `src/app/api/auth/[...nextauth]/route.ts` 引用。
- * 客户端通过 `src/lib/auth/{google_login,facebook_login,logout,auth_gate}.ts` 触发。
+ * 客户端通过 `src/lib/auth/{auth_platform,logout}.ts` 触发。
  */
 import NextAuth from "next-auth";
 import Google from "next-auth/providers/google";
@@ -43,8 +43,7 @@ export { handler as GET, handler as POST };
 // 每个 class 一个独立文件，详见同目录的子模块。
 // 这里 re-export 仅为消费者提供 `@/lib/auth/nextauth` 单点导入。
 // 注：上方 `next-auth` 是 server-only，本文件编译时会被 Next.js 切分到 server bundle；
-// 客户端 import `GoogleLogin` / `FacebookLogin` / `Logout` 时不会拉入。
+// 客户端 import `AuthPlatform` / `Logout` 时不会拉入。
 // ============================================================
-export { GoogleLogin } from "./google_login";
-export { FacebookLogin } from "./facebook_login";
+export { AuthPlatform, type AuthProvider } from "./auth_platform";
 export { Logout } from "./logout";

src/stores/auth/auth-state.ts

@@ -1,11 +1,11 @@
 /**
- * Auth 状态机：Context 形状 + 初始值
+ * Auth 状态机：State 形状 + 初始值
  */
 import type { AuthMode } from "@/models/auth/auth-mode";
 import type { AuthPanelMode } from "@/models/auth/auth-panel-mode";
 import type { LoginType } from "@/models/auth/login-type";
 
-export interface AuthContext {
+export interface AuthState {
   /** 当前面板模式（Facebook / Email） */
   authPanelMode: AuthPanelMode;
   /** 内部登录模式（login / register） */
@@ -18,7 +18,7 @@ export interface AuthContext {
   loginType: LoginType;
 }
 
-export const initialContext: AuthContext = {
+export const initialState: AuthState = {
   authPanelMode: "facebook",
   authMode: "login",
   email: "",

src/stores/auth/auth-types.ts

@@ -7,4 +7,4 @@
  *   - Context 形状与初始值由 `auth-context.ts` 导出
  *   - `AuthState` 由 `auth-context.tsx` 导出（保持原 API 兼容）
  */
-export type { AuthEvent } from "./auth-events";
+export type { AuthEvent } from "./machine/auth-events";

src/stores/auth/index.ts

@@ -6,7 +6,8 @@
  *   - 事件联合位于 auth-events.ts
  *   - machine / 类型 / React 入口分别由对应文件导出
  */
+export * from "./auth-state";
 export * from "./auth-context";
-export * from "./auth-events";
-export * from "./auth-machine";
+export * from "./machine/auth-events";
+export * from "./machine/auth-machine";
 export * from "./auth-types";

src/stores/auth/machine/auth-context.tsx

@@ -18,12 +18,12 @@ import {
 import { useMachine } from "@xstate/react";
 
 import { authMachine } from "./auth-machine";
-import type { AuthEvent, AuthContext as MachineContext } from "./auth-machine";
+import type { AuthEvent, AuthState as MachineContext } from "./auth-machine";
 
 /**
  * 对外暴露的 State 形状（保持与原 AuthState 兼容）
  */
-export interface AuthState {
+interface AuthState {
   authPanelMode: MachineContext["authPanelMode"];
   authMode: MachineContext["authMode"];
   email: string;

src/stores/auth/machine/auth-machine.ts

@@ -4,8 +4,8 @@
  * 原始 Dart: lib/ui/auth/bloc/auth_bloc.dart + auth_state.dart + auth_event.dart
  *
  * 本轮迁移：社交登录改由 NextAuth 处理（`@/lib/auth/nextauth`），状态机仅保留
- * 邮箱注册/登录 + 通用 reset 事件。社交登录走 `new GoogleLogin().signIn()` /
- * `new FacebookLogin().signIn()`。
+ * 邮箱注册/登录 + 通用 reset 事件。社交登录走 `new AuthPlatform("google").signIn()` /
+ * `new AuthPlatform("facebook").signIn()`。
  */
 import { setup, fromPromise, assign } from "xstate";
 
@@ -14,12 +14,12 @@ import { authRepository } from "@/data/repositories/auth_repository";
 import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { Result } from "@/utils/result";
 
-import { AuthContext, initialContext } from "./auth-context";
+import { AuthState, initialState } from "../auth-state";
 import type { AuthEvent } from "./auth-events";
 
-// 重新导出 Context / Event 类型，保持 machine 文件的公共 API 不变
-export type { AuthContext } from "./auth-context";
-export { initialContext } from "./auth-context";
+// 重新导出 State / Event 类型，保持 machine 文件的公共 API 不变
+export type { AuthState } from "../auth-state";
+export { initialState } from "../auth-state";
 export type { AuthEvent } from "./auth-events";
 
 // ============================================================
@@ -73,7 +73,7 @@ const emailRegisterThenLoginActor = fromPromise<
 // ============================================================
 export const authMachine = setup({
   types: {
-    context: {} as AuthContext,
+    context: {} as AuthState,
     events: {} as AuthEvent,
   },
   actors: {
@@ -83,7 +83,7 @@ export const authMachine = setup({
 }).createMachine({
   id: "auth",
   initial: "idle",
-  context: initialContext,
+  context: initialState,
   states: {
     idle: {
       on: {
@@ -109,11 +109,11 @@ export const authMachine = setup({
           }),
         },
         AuthReset: {
-          actions: assign(() => initialContext),
+          actions: assign(() => initialState),
         },
         AuthEmailLoginSubmitted: "loadingEmailLogin",
         AuthEmailRegisterSubmitted: "loadingEmailRegister",
-        // 社交登录已迁移到 NextAuth + GoogleLogin / FacebookLogin 类
+        // 社交登录已迁移到 NextAuth + AuthPlatform 类
         // 状态机保留事件以兼容旧调用方（实际不再触发）
         AuthGoogleLoginSubmitted: {},
         AuthFacebookLoginSubmitted: {},

src/stores/chat/chat-context.tsx

@@ -20,13 +20,13 @@ import {
 } from "react";
 import { useMachine } from "@xstate/react";
 
-import { chatMachine } from "./chat-machine";
-import type { ChatEvent, ChatContext as MachineContext } from "./chat-machine";
+import { chatMachine } from "./machine/chat-machine";
+import type { ChatEvent, ChatState as MachineContext } from "./machine/chat-machine";
 
 /**
  * 对外暴露的 State 形状（保持与原 ChatState 兼容）
  */
-export interface ChatState {
+interface ChatState {
   messages: MachineContext["messages"];
   isReplyingAI: boolean;
   isGuest: boolean;

src/stores/chat/chat-types.ts

@@ -8,5 +8,5 @@
  *   - `ChatState` 由 `chat-context.tsx` 导出（保持原 API 兼容）
  *   - `GuestChatQuota` 仍由 `chat-machine.ts` 导出（业务常量，与上下文配对紧密）
  */
-export type { ChatEvent } from "./chat-events";
+export type { ChatEvent } from "./machine/chat-events";
 export { GuestChatQuota } from "./chat-machine";

src/stores/chat/index.ts

@@ -11,7 +11,8 @@
  * 注：chat-side-effects.ts 暂未删除（其中 WebSocket 长生命周期逻辑
  * 待下一轮迁移到 fromCallback actor）。
  */
+export * from "./machine/chat-state";
 export * from "./chat-context";
-export * from "./chat-events";
+export * from "./machine/chat-events";
 export * from "./chat-types";
 export { chatMachine } from "./chat-machine";

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

@@ -23,8 +23,8 @@ import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { formatDate } from "@/utils/date";
 import { Result } from "@/utils/result";
 
-import { ChatContext, initialContext } from "./chat-context";
-import type { ChatEvent } from "./chat-events";
+import { ChatState, initialState } from "./chat-state";
+import type { ChatEvent } from "./machine/chat-events";
 
 /** 游客配额阈值（与 Dart `GuestChatQuota` 保持一致） */
 export const GuestChatQuota = {
@@ -32,10 +32,10 @@ export const GuestChatQuota = {
   quotaExhausted: 0,
 } as const;
 
-// 重新导出 Context / Event 类型，保持 machine 文件的公共 API 不变
-export type { ChatContext } from "./chat-context";
-export { initialContext } from "./chat-context";
-export type { ChatEvent } from "./chat-events";
+// 重新导出 State / Event 类型，保持 machine 文件的公共 API 不变
+export type { ChatState } from "./chat-state";
+export { initialState } from "./chat-state";
+export type { ChatEvent } from "./machine/chat-events";
 
 // ============================================================
 // Helpers
@@ -146,7 +146,7 @@ const loadMoreHistoryActor = fromPromise<
 // ============================================================
 export const chatMachine = setup({
   types: {
-    context: {} as ChatContext,
+    context: {} as ChatState,
     events: {} as ChatEvent,
   },
   actors: {
@@ -230,7 +230,7 @@ export const chatMachine = setup({
 }).createMachine({
   id: "chat",
   initial: "idle",
-  context: initialContext,
+  context: initialState,
   states: {
     idle: {
       on: {

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

@@ -1,11 +1,11 @@
 /**
- * Chat 状态机：Context 形状 + 初始值
+ * Chat 状态机：State 形状 + 初始值
  *
  * 注：GuestChatQuota 仍位于 chat-machine.ts（属于业务常量，与上下文配对紧密）。
  */
 import type { UiMessage } from "@/models/chat/ui-message";
 
-export interface ChatContext {
+export interface ChatState {
   messages: UiMessage[];
   isReplyingAI: boolean;
   isGuest: boolean;
@@ -17,7 +17,7 @@ export interface ChatContext {
   historyOffset: number;
 }
 
-export const initialContext: ChatContext = {
+export const initialState: ChatState = {
   messages: [],
   isReplyingAI: false,
   isGuest: true,

src/stores/sidebar/index.ts

@@ -8,7 +8,8 @@
  *   - Context 形状与初始值位于 sidebar-context.ts
  *   - 事件联合位于 sidebar-events.ts
  */
+export * from "./sidebar-state";
 export * from "./sidebar-context";
 export * from "./sidebar-events";
 export * from "./sidebar-types";
-export { sidebarMachine } from "./sidebar-machine";
+export { sidebarMachine } from "./machine/sidebar-machine";

src/stores/sidebar/machine/sidebar-machine.ts

@@ -11,7 +11,7 @@
  */
 import { setup, assign } from "xstate";
 
-import { SidebarContext, initialContext } from "./sidebar-context";
+import { SidebarState, initialState } from "../sidebar-state";
 import type { SidebarEvent } from "./sidebar-events";
 
 /**
@@ -36,9 +36,9 @@ export const BottomNavItem = {
 
 export type BottomNavItem = (typeof BottomNavItem)[keyof typeof BottomNavItem];
 
-// 重新导出 Context / Event 类型，保持 machine 文件的公共 API 不变
-export type { SidebarContext } from "./sidebar-context";
-export { initialContext } from "./sidebar-context";
+// 重新导出 State / Event 类型，保持 machine 文件的公共 API 不变
+export type { SidebarState } from "../sidebar-state";
+export { initialState } from "../sidebar-state";
 export type { SidebarEvent } from "./sidebar-events";
 
 // ============================================================
@@ -46,7 +46,7 @@ export type { SidebarEvent } from "./sidebar-events";
 // ============================================================
 export const sidebarMachine = setup({
   types: {
-    context: {} as SidebarContext,
+    context: {} as SidebarState,
     events: {} as SidebarEvent,
   },
   actions: {
@@ -73,7 +73,7 @@ export const sidebarMachine = setup({
 }).createMachine({
   id: "sidebar",
   initial: "idle",
-  context: initialContext,
+  context: initialState,
   states: {
     /**
      * Sidebar 是纯数据状态（无异步副作用），仅用 idle 状态

src/stores/sidebar/machine/sidebar-state.ts

@@ -1,18 +1,18 @@
 /**
- * Sidebar 状态机：Context 形状 + 初始值
+ * Sidebar 状态机：State 形状 + 初始值
  *
  * SidebarPage / BottomNavItem 仍由 sidebar-machine.ts 导出（事件/上下文均需引用）。
  */
-import { SidebarPage, BottomNavItem } from "./sidebar-machine";
+import { SidebarPage, BottomNavItem } from "./machine/sidebar-machine";
 
-export interface SidebarContext {
+export interface SidebarState {
   currentPage: SidebarPage;
   selectedBottomNavItem: BottomNavItem;
   characterName: string;
   characterProgress: number;
 }
 
-export const initialContext: SidebarContext = {
+export const initialState: SidebarState = {
   currentPage: SidebarPage.DefaultView,
   selectedBottomNavItem: BottomNavItem.None,
   characterName: "Luna",

src/stores/sidebar/sidebar-context.tsx

@@ -17,16 +17,16 @@ import {
 } from "react";
 import { useMachine } from "@xstate/react";
 
-import { sidebarMachine } from "./sidebar-machine";
+import { sidebarMachine } from "./machine/sidebar-machine";
 import type {
-  SidebarContext as MachineContext,
+  SidebarState as MachineContext,
   SidebarEvent,
-} from "./sidebar-machine";
+} from "./machine/sidebar-machine";
 
 /**
  * 对外暴露的 State 形状（保持与原 SidebarState 兼容）
  */
-export interface SidebarState {
+interface SidebarState {
   currentPage: MachineContext["currentPage"];
   selectedBottomNavItem: MachineContext["selectedBottomNavItem"];
   characterName: string;

src/stores/sidebar/sidebar-types.ts

@@ -8,5 +8,5 @@
  *   - Context 形状由 `sidebar-context.ts` 导出
  *   - SidebarState 由 `sidebar-context.tsx` 导出（保持原 API 兼容）
  */
-export { SidebarPage, BottomNavItem } from "./sidebar-machine";
+export { SidebarPage, BottomNavItem } from "./machine/sidebar-machine";
 export type { SidebarEvent } from "./sidebar-events";

src/stores/user/index.ts

@@ -8,7 +8,8 @@
  *   - Context 形状与初始值位于 user-context.ts
  *   - 事件联合位于 user-events.ts
  */
+export * from "./machine/user-state";
 export * from "./user-context";
-export * from "./user-events";
+export * from "./machine/user-events";
 export * from "./user-types";
 export { userMachine } from "./user-machine";

src/stores/user/machine/user-machine.ts

@@ -17,13 +17,13 @@ import { authRepository } from "@/data/repositories/auth_repository";
 import { UserStorage } from "@/data/storage/user/user_storage";
 import { Result } from "@/utils/result";
 
-import { UserContext, initialContext } from "./user-context";
-import type { UserEvent } from "./user-events";
+import { UserState, initialState } from "./machine/user-state";
+import type { UserEvent } from "./machine/user-events";
 
-// 重新导出 Context / Event 类型，保持 machine 文件的公共 API 不变
-export type { UserContext } from "./user-context";
-export { initialContext } from "./user-context";
-export type { UserEvent } from "./user-events";
+// 重新导出 State / Event 类型，保持 machine 文件的公共 API 不变
+export type { UserState } from "./machine/user-state";
+export { initialState } from "./machine/user-state";
+export type { UserEvent } from "./machine/user-events";
 
 // ============================================================
 // Helpers
@@ -102,7 +102,7 @@ const userLogoutActor = fromPromise<void>(async () => {
 // ============================================================
 export const userMachine = setup({
   types: {
-    context: {} as UserContext,
+    context: {} as UserState,
     events: {} as UserEvent,
   },
   actors: {
@@ -136,7 +136,7 @@ export const userMachine = setup({
 }).createMachine({
   id: "user",
   initial: "idle",
-  context: initialContext,
+  context: initialState,
   states: {
     idle: {
       on: {

src/stores/user/machine/user-state.ts

@@ -1,9 +1,9 @@
 /**
- * User 状态机：Context 形状 + 初始值
+ * User 状态机：State 形状 + 初始值
  */
 import type { UserView } from "@/models/user/user";
 
-export interface UserContext {
+export interface UserState {
   currentUser: UserView | null;
   pronouns: string;
   coinBalance: number;
@@ -11,7 +11,7 @@ export interface UserContext {
   avatarUrl: string | null;
 }
 
-export const initialContext: UserContext = {
+export const initialState: UserState = {
   currentUser: null,
   pronouns: "He",
   coinBalance: 45,

src/stores/user/user-context.tsx

@@ -18,12 +18,12 @@ import {
 import { useMachine } from "@xstate/react";
 
 import { userMachine } from "./user-machine";
-import type { UserContext as MachineContext, UserEvent } from "./user-machine";
+import type { UserState as MachineContext, UserEvent } from "./user-machine";
 
 /**
  * 对外暴露的 State 形状（保持与原 UserState 兼容）
  */
-export interface UserState {
+interface UserState {
   currentUser: MachineContext["currentUser"];
   pronouns: string;
   coinBalance: number;

src/stores/user/user-types.ts

@@ -7,4 +7,4 @@
  *   - Context 形状与初始值由 `user-context.ts` 导出
  *   - `UserState` 由 `user-context.tsx` 导出（保持原 API 兼容）
  */
-export type { UserEvent } from "./user-events";
+export type { UserEvent } from "./machine/user-events";