refactor(stores): split state and event unions into separate files

Extract `<Name>Context` interface + `initialContext` const into
`<name>-context.ts` and the event union into `<name>-events.ts` for
all four state machines (auth, chat, sidebar, user) under src/stores/.

- `*-machine.ts` keeps helpers, actors, actions, and the
  `setup().createMachine()` body; re-exports the types/initial value
  to preserve its public API.
- `*-types.ts` re-exports from the new files for backward compatibility
  (sidebar keeps enum re-exports, chat keeps GuestChatQuota).
- `index.ts` barrels updated to re-export the new files.
- Removed unused model imports (AuthMode, AuthPanelMode) from
  auth-machine.ts; kept LoginType, UiMessage, UserView where still
  used by actors/helpers.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/stores/auth/auth-context.ts

@@ -0,0 +1,30 @@
+/**
+ * Auth 状态机：Context 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 {
+  /** 当前面板模式（Facebook / Email） */
+  authPanelMode: AuthPanelMode;
+  /** 内部登录模式（login / register） */
+  authMode: AuthMode;
+  email: string;
+  password: string;
+  username: string;
+  confirmPassword: string;
+  errorMessage: string | null;
+  loginType: LoginType;
+}
+
+export const initialContext: AuthContext = {
+  authPanelMode: "facebook",
+  authMode: "login",
+  email: "",
+  password: "",
+  username: "",
+  confirmPassword: "",
+  errorMessage: null,
+  loginType: "none",
+};

src/stores/auth/auth-events.ts

@@ -0,0 +1,27 @@
+/**
+ * Auth 状态机：事件联合
+ *
+ * 事件名与原 Dart AuthEvent 对齐。
+ */
+import type { AuthMode } from "@/models/auth/auth-mode";
+import type { AuthPanelMode } from "@/models/auth/auth-panel-mode";
+
+export type AuthEvent =
+  // 内部 UI 事件
+  | { type: "AuthPanelModeChanged"; mode: AuthPanelMode }
+  | { type: "AuthModeChanged"; mode: AuthMode }
+  | { type: "AuthFormCleared" }
+  | { type: "AuthReset" }
+  // 业务事件（提交）
+  | { type: "AuthEmailLoginSubmitted"; email: string; password: string }
+  | {
+      type: "AuthEmailRegisterSubmitted";
+      email: string;
+      password: string;
+      username: string;
+      confirmPassword: string;
+    }
+  // 社交登录（已迁移到 NextAuth）— 业务层直接 await nextauth.googleLogin() 即可
+  | { type: "AuthGoogleLoginSubmitted" }
+  | { type: "AuthFacebookLoginSubmitted" }
+  | { type: "AuthAppleLoginSubmitted" };

src/stores/auth/auth-machine.ts

@@ -9,62 +9,18 @@
  */
 import { setup, fromPromise, assign } from "xstate";
 
-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";
 import { authRepository } from "@/data/repositories/auth_repository";
 import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { Result } from "@/utils/result";
 
-// ============================================================
-// Context
-// ============================================================
-export interface AuthContext {
-  /** 当前面板模式（Facebook / Email） */
-  authPanelMode: AuthPanelMode;
-  /** 内部登录模式（login / register） */
-  authMode: AuthMode;
-  email: string;
-  password: string;
-  username: string;
-  confirmPassword: string;
-  errorMessage: string | null;
-  loginType: LoginType;
-}
+import { AuthContext, initialContext } from "./auth-context";
+import type { AuthEvent } from "./auth-events";
 
-const initialContext: AuthContext = {
-  authPanelMode: "facebook",
-  authMode: "login",
-  email: "",
-  password: "",
-  username: "",
-  confirmPassword: "",
-  errorMessage: null,
-  loginType: "none",
-};
-
-// ============================================================
-// Events（事件类型名与原 Dart AuthEvent 对齐）
-// ============================================================
-export type AuthEvent =
-  // 内部 UI 事件
-  | { type: "AuthPanelModeChanged"; mode: AuthPanelMode }
-  | { type: "AuthModeChanged"; mode: AuthMode }
-  | { type: "AuthFormCleared" }
-  | { type: "AuthReset" }
-  // 业务事件（提交）
-  | { type: "AuthEmailLoginSubmitted"; email: string; password: string }
-  | {
-      type: "AuthEmailRegisterSubmitted";
-      email: string;
-      password: string;
-      username: string;
-      confirmPassword: string;
-    }
-  // 社交登录（已迁移到 NextAuth）— 业务层走 GoogleLogin / FacebookLogin 类
-  | { type: "AuthGoogleLoginSubmitted" }
-  | { type: "AuthFacebookLoginSubmitted" }
-  | { type: "AuthAppleLoginSubmitted" };
+// 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";
+export type { AuthEvent } from "./auth-events";
 
 // ============================================================
 // Helpers

src/stores/auth/auth-types.ts

@@ -3,7 +3,8 @@
  *
  * 原始文件定义了 AuthState 接口、AuthEvent 联合、initialAuthState。
  * 状态机重构后：
- *   - `AuthEvent` 联合由 `auth-machine.ts` 重新导出（保留类型）
+ *   - `AuthEvent` 联合由 `auth-events.ts` 导出
+ *   - 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-machine";
+export type { AuthEvent } from "./auth-events";

src/stores/auth/index.ts

@@ -1,7 +1,12 @@
 /**
- * @file Automatically generated by barrelsby.
+ * @file Auth 公共导出
+ *
+ * 状态机重构后：
+ *   - Context 形状与初始值位于 auth-context.ts
+ *   - 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-context";
+export * from "./auth-events";
 export * from "./auth-machine";
 export * from "./auth-types";

src/stores/chat/chat-context.ts

@@ -0,0 +1,30 @@
+/**
+ * Chat 状态机：Context 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 {
+  messages: UiMessage[];
+  isReplyingAI: boolean;
+  isGuest: boolean;
+  guestRemainingQuota: number;
+  guestTotalQuota: number;
+  quotaExceededTrigger: number;
+  isLoadingMore: boolean;
+  hasMore: boolean;
+  historyOffset: number;
+}
+
+export const initialContext: ChatContext = {
+  messages: [],
+  isReplyingAI: false,
+  isGuest: true,
+  guestRemainingQuota: 40,
+  guestTotalQuota: 50,
+  quotaExceededTrigger: 0,
+  isLoadingMore: false,
+  hasMore: true,
+  historyOffset: 0,
+};

src/stores/chat/chat-events.ts

@@ -0,0 +1,23 @@
+/**
+ * Chat 状态机：事件联合
+ *
+ * 事件名与原 Dart ChatEvent 对齐。
+ */
+export type ChatEvent =
+  | { type: "ChatInit" }
+  | { type: "ChatScreenVisible" }
+  | { type: "ChatScreenInvisible" }
+  | { type: "ChatSendMessage"; content: string }
+  | { type: "ChatSendImage"; imageBase64: string }
+  | { type: "ChatLoadMoreHistory" }
+  | {
+      type: "ChatAISentenceReceived";
+      index: number;
+      text: string;
+      total: number;
+      done: boolean;
+    }
+  | { type: "ChatWebSocketError"; errorMessage: string }
+  | { type: "ChatWebSocketConnected"; userId: string }
+  | { type: "ChatQuotaExceeded" }
+  | { type: "ChatAuthStatusChanged" };

src/stores/chat/chat-machine.ts

@@ -23,32 +23,8 @@ import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { formatDate } from "@/utils/date";
 import { Result } from "@/utils/result";
 
-// ============================================================
-// Context
-// ============================================================
-export interface ChatContext {
-  messages: UiMessage[];
-  isReplyingAI: boolean;
-  isGuest: boolean;
-  guestRemainingQuota: number;
-  guestTotalQuota: number;
-  quotaExceededTrigger: number;
-  isLoadingMore: boolean;
-  hasMore: boolean;
-  historyOffset: number;
-}
-
-const initialContext: ChatContext = {
-  messages: [],
-  isReplyingAI: false,
-  isGuest: true,
-  guestRemainingQuota: 40,
-  guestTotalQuota: 50,
-  quotaExceededTrigger: 0,
-  isLoadingMore: false,
-  hasMore: true,
-  historyOffset: 0,
-};
+import { ChatContext, initialContext } from "./chat-context";
+import type { ChatEvent } from "./chat-events";
 
 /** 游客配额阈值（与 Dart `GuestChatQuota` 保持一致） */
 export const GuestChatQuota = {
@@ -56,27 +32,10 @@ export const GuestChatQuota = {
   quotaExhausted: 0,
 } as const;
 
-// ============================================================
-// Events
-// ============================================================
-export type ChatEvent =
-  | { type: "ChatInit" }
-  | { type: "ChatScreenVisible" }
-  | { type: "ChatScreenInvisible" }
-  | { type: "ChatSendMessage"; content: string }
-  | { type: "ChatSendImage"; imageBase64: string }
-  | { type: "ChatLoadMoreHistory" }
-  | {
-      type: "ChatAISentenceReceived";
-      index: number;
-      text: string;
-      total: number;
-      done: boolean;
-    }
-  | { type: "ChatWebSocketError"; errorMessage: string }
-  | { type: "ChatWebSocketConnected"; userId: string }
-  | { type: "ChatQuotaExceeded" }
-  | { type: "ChatAuthStatusChanged" };
+// 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";
 
 // ============================================================
 // Helpers

src/stores/chat/chat-types.ts

@@ -3,9 +3,10 @@
  *
  * 原始文件定义了 ChatState 接口、ChatEvent 联合、initialChatState、GuestChatQuota。
  * 状态机重构后：
- *   - `ChatEvent` 联合由 `chat-machine.ts` 重新导出（保留类型）
+ *   - `ChatEvent` 联合由 `chat-events.ts` 导出
+ *   - Context 形状与初始值由 `chat-context.ts` 导出
  *   - `ChatState` 由 `chat-context.tsx` 导出（保持原 API 兼容）
- *   - `GuestChatQuota` 重新导出
+ *   - `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-machine";
+export type { ChatEvent } from "./chat-events";
 export { GuestChatQuota } from "./chat-machine";

src/stores/chat/index.ts

@@ -5,10 +5,13 @@
  *   - 业务类（Dart 风格 context/reducer/side-effects）已合并到 chat-machine.ts
  *   - 类型由 chat-types.ts 重新导出
  *   - React 入口为 chat-context.tsx（useMachine 包装）
+ *   - Context 形状与初始值位于 chat-context.ts
+ *   - 事件联合位于 chat-events.ts
  *
  * 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 "./chat-context";
+export * from "./chat-events";
 export * from "./chat-types";
 export { chatMachine } from "./chat-machine";

src/stores/sidebar/index.ts

@@ -5,7 +5,10 @@
  *   - reducer 逻辑已合并到 sidebar-machine.ts
  *   - 类型由 sidebar-types.ts 重新导出
  *   - React 入口为 sidebar-context.tsx（useMachine 包装）
+ *   - Context 形状与初始值位于 sidebar-context.ts
+ *   - 事件联合位于 sidebar-events.ts
  */
 export * from "./sidebar-context";
+export * from "./sidebar-events";
 export * from "./sidebar-types";
 export { sidebarMachine } from "./sidebar-machine";

src/stores/sidebar/sidebar-context.ts

@@ -0,0 +1,20 @@
+/**
+ * Sidebar 状态机：Context 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";
+
+export interface SidebarContext {
+  currentPage: SidebarPage;
+  selectedBottomNavItem: BottomNavItem;
+  characterName: string;
+  characterProgress: number;
+}
+
+export const initialContext: SidebarContext = {
+  currentPage: SidebarPage.DefaultView,
+  selectedBottomNavItem: BottomNavItem.None,
+  characterName: "Luna",
+  characterProgress: 0,
+};

src/stores/sidebar/sidebar-events.ts

@@ -0,0 +1,13 @@
+/**
+ * Sidebar 状态机：事件联合
+ */
+import type { SidebarPage, BottomNavItem } from "./sidebar-machine";
+
+export type SidebarEvent =
+  | {
+      type: "SidebarShowPage";
+      page: SidebarPage;
+      bottomNavItem?: BottomNavItem;
+    }
+  | { type: "SidebarClearBottomNav" }
+  | { type: "SidebarUpdateCharacter"; name: string; progress: number };

src/stores/sidebar/sidebar-machine.ts

@@ -11,6 +11,9 @@
  */
 import { setup, assign } from "xstate";
 
+import { SidebarContext, initialContext } from "./sidebar-context";
+import type { SidebarEvent } from "./sidebar-events";
+
 /**
  * Sidebar 页面/底部导航枚举（与原 sidebar-types.ts 保持一致）
  */
@@ -33,34 +36,10 @@ export const BottomNavItem = {
 
 export type BottomNavItem = (typeof BottomNavItem)[keyof typeof BottomNavItem];
 
-// ============================================================
-// Context
-// ============================================================
-export interface SidebarContext {
-  currentPage: SidebarPage;
-  selectedBottomNavItem: BottomNavItem;
-  characterName: string;
-  characterProgress: number;
-}
-
-const initialContext: SidebarContext = {
-  currentPage: SidebarPage.DefaultView,
-  selectedBottomNavItem: BottomNavItem.None,
-  characterName: "Luna",
-  characterProgress: 0,
-};
-
-// ============================================================
-// Events
-// ============================================================
-export type SidebarEvent =
-  | {
-      type: "SidebarShowPage";
-      page: SidebarPage;
-      bottomNavItem?: BottomNavItem;
-    }
-  | { type: "SidebarClearBottomNav" }
-  | { type: "SidebarUpdateCharacter"; name: string; progress: number };
+// 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";
+export type { SidebarEvent } from "./sidebar-events";
 
 // ============================================================
 // Machine

src/stores/sidebar/sidebar-types.ts

@@ -3,12 +3,10 @@
  *
  * 原始文件定义了 SidebarPage、BottomNavItem、SidebarState、SidebarEvent。
  * 状态机重构后：
- *   - 枚举（SidebarPage、BottomNavItem）由 `sidebar-machine.ts` 重新导出
- *   - 事件联合（SidebarEvent）由 `sidebar-machine.ts` 重新导出
+ *   - 枚举（SidebarPage、BottomNavItem）由 `sidebar-machine.ts` 导出
+ *   - 事件联合（SidebarEvent）由 `sidebar-events.ts` 导出
+ *   - 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,
-  type SidebarEvent,
-} from "./sidebar-machine";
+export { SidebarPage, BottomNavItem } from "./sidebar-machine";
+export type { SidebarEvent } from "./sidebar-events";

src/stores/user/index.ts

@@ -5,7 +5,10 @@
  *   - 业务类（Dart 风格 context/reducer/side-effects）已合并到 user-machine.ts
  *   - 类型由 user-types.ts 重新导出
  *   - React 入口为 user-context.tsx（useMachine 包装）
+ *   - Context 形状与初始值位于 user-context.ts
+ *   - 事件联合位于 user-events.ts
  */
 export * from "./user-context";
+export * from "./user-events";
 export * from "./user-types";
 export { userMachine } from "./user-machine";

src/stores/user/user-context.ts

@@ -0,0 +1,20 @@
+/**
+ * User 状态机：Context 形状 + 初始值
+ */
+import type { UserView } from "@/models/user/user";
+
+export interface UserContext {
+  currentUser: UserView | null;
+  pronouns: string;
+  coinBalance: number;
+  isLoading: boolean;
+  avatarUrl: string | null;
+}
+
+export const initialContext: UserContext = {
+  currentUser: null,
+  pronouns: "He",
+  coinBalance: 45,
+  isLoading: false,
+  avatarUrl: null,
+};

src/stores/user/user-events.ts

@@ -0,0 +1,14 @@
+/**
+ * User 状态机：事件联合
+ */
+import type { UserView } from "@/models/user/user";
+
+export type UserEvent =
+  | { type: "UserInit" }
+  | { type: "UserFetch" }
+  | { type: "UserUpdate"; user: UserView }
+  | { type: "UserUpdateUsername"; username: string }
+  | { type: "UserUpdatePronouns"; pronouns: string }
+  | { type: "UserLogout" }
+  | { type: "UserDeleteChatHistory" }
+  | { type: "UserDeleteAccount" };

src/stores/user/user-machine.ts

@@ -17,37 +17,13 @@ import { authRepository } from "@/data/repositories/auth_repository";
 import { UserStorage } from "@/data/storage/user/user_storage";
 import { Result } from "@/utils/result";
 
-// ============================================================
-// Context
-// ============================================================
-export interface UserContext {
-  currentUser: UserView | null;
-  pronouns: string;
-  coinBalance: number;
-  isLoading: boolean;
-  avatarUrl: string | null;
-}
+import { UserContext, initialContext } from "./user-context";
+import type { UserEvent } from "./user-events";
 
-const initialContext: UserContext = {
-  currentUser: null,
-  pronouns: "He",
-  coinBalance: 45,
-  isLoading: false,
-  avatarUrl: null,
-};
-
-// ============================================================
-// Events
-// ============================================================
-export type UserEvent =
-  | { type: "UserInit" }
-  | { type: "UserFetch" }
-  | { type: "UserUpdate"; user: UserView }
-  | { type: "UserUpdateUsername"; username: string }
-  | { type: "UserUpdatePronouns"; pronouns: string }
-  | { type: "UserLogout" }
-  | { type: "UserDeleteChatHistory" }
-  | { type: "UserDeleteAccount" };
+// 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";
 
 // ============================================================
 // Helpers

src/stores/user/user-types.ts

@@ -3,7 +3,8 @@
  *
  * 原始文件定义了 UserState 接口、UserEvent 联合、initialUserState。
  * 状态机重构后：
- *   - `UserEvent` 联合由 `user-machine.ts` 重新导出（保留类型）
+ *   - `UserEvent` 联合由 `user-events.ts` 导出
+ *   - 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-machine";
+export type { UserEvent } from "./user-events";