refactor: Context 与 Provider 合并 — 消除 contexts/ 目录，一文件一状态单元

- ThemeContext + useTheme → ThemeProvider.tsx（原 hooks/use-theme.ts 删除）
- AppContext + useAppContext → AppProvider.tsx（原 contexts/app-context.ts 删除）
- SettingsContext + useSettings → SettingsProvider.tsx（原 contexts/settings-context.ts 删除）
- HomeContext + useHomeContext → HomeContent.tsx（原 contexts/home-context.ts 删除）
- 删除空的 contexts/ 目录，20+ 导入路径同步更新
- TypeScript 编译通过（npx tsc --noEmit 零错误）

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/pages/home/HomeContent.tsx

@@ -1,13 +1,12 @@
 // ============================================================
-// HomeContent — 首页三列正文布局 + HomeProvider
+// HomeContent — 首页三列正文布局 + HomeProvider（Context + Provider + Hook）
 // 可拖拽调整三栏宽度，所有数据请求在登录后发送
 // ============================================================
 
-import { useState, useCallback, useRef, useEffect, useMemo } from 'react';
+import { createContext, useContext, useState, useCallback, useRef, useEffect, useMemo } from 'react';
 import { theme as antTheme, Empty } from 'antd';
 
-import { HomeContext } from '@/contexts/home-context';
-import { useAppContext } from '@/contexts/app-context';
+import { useAppContext } from '@/components/AppProvider';
 import type { ModelsListResponseBody, TaskInfoItemResponseBody } from '@/services/modules';
 import { LeftPanel } from './components/LeftPanel';
 import { CenterPanel } from './components/CenterPanel';
@@ -17,6 +16,38 @@ import { Typography } from 'antd';
 
 const { Text } = Typography;
 
+// ---------- Context 类型 ----------
+
+export interface HomeContextValue {
+   /** 当前选中的模型 */
+   selectedModel: ModelsListResponseBody | null;
+   setSelectedModel: (model: ModelsListResponseBody | null) => void;
+   /** 任务记录分页 — 当前页码 */
+   taskPage: number;
+   /** 任务记录分页 — 每页条数 */
+   taskPageSize: number;
+   setTaskPage: (page: number) => void;
+   setTaskPageSize: (size: number) => void;
+   /** 当前选中的任务记录（用于右侧预览） */
+   selectedTask: TaskInfoItemResponseBody | null;
+   setSelectedTask: (task: TaskInfoItemResponseBody | null) => void;
+   /** 侧边栏折叠状态 */
+   isLeftCollapsed: boolean;
+   toggleLeftCollapsed: () => void;
+}
+
+export const HomeContext = createContext<HomeContextValue | null>(null);
+
+// ---------- Consumer Hook ----------
+
+export function useHomeContext(): HomeContextValue {
+   const ctx = useContext(HomeContext);
+   if (!ctx) {
+      throw new Error('useHomeContext() 必须在 <HomeContent> 内部调用');
+   }
+   return ctx;
+}
+
 // ---------- 常量 ----------
 
 /** 左列最小/默认宽度 */

src/pages/home/components/ModelInputForm.tsx

@@ -25,8 +25,8 @@ import {
 } from '@ant-design/icons';
 import type { UploadFile } from 'antd/es/upload';
 
-import { useHomeContext } from '@/contexts/home-context';
-import { useAppContext } from '@/contexts/app-context';
+import { useHomeContext } from '@/pages/home/HomeContent';
+import { useAppContext } from '@/components/AppProvider';
 import { useSubmitTask } from '@/hooks/use-api';
 import { emit, EVENTS } from '@/utils/event-bus';
 import type { ModelsListResponseBody, TaskInfoItemResponseBody } from '@/services/modules';

src/pages/home/components/ModelSelector.tsx

@@ -8,7 +8,7 @@ import { Tabs, Spin, Empty, Tag, Typography, Button, Result, message, theme as a
 import { AppstoreOutlined } from '@ant-design/icons';
 
 import { useModelList } from '@/hooks/use-api';
-import { useHomeContext } from '@/contexts/home-context';
+import { useHomeContext } from '@/pages/home/HomeContent';
 import { resolveCategoryLabel, MODEL_CATEGORIES } from '@/services/modules';
 import type { ModelsListResponseBody, ModelCategoryStringEnum } from '@/services/modules';
 

src/pages/home/components/OutputPreview.tsx

@@ -11,7 +11,7 @@ import {
    CloseCircleOutlined,
 } from '@ant-design/icons';
 
-import { useHomeContext } from '@/contexts/home-context';
+import { useHomeContext } from '@/pages/home/HomeContent';
 import { useTaskDetail } from '@/hooks/use-api';
 import type { TaskStatusString } from '@/services/modules';
 

src/pages/home/components/TaskHistory.tsx

@@ -18,9 +18,9 @@ import type { FilterValue, SorterResult } from 'antd/es/table/interface';
 import { HistoryOutlined, SearchOutlined, SettingOutlined } from '@ant-design/icons';
 
 import { useTaskList, useModelList } from '@/hooks/use-api';
-import { useAppContext } from '@/contexts/app-context';
-import { useHomeContext } from '@/contexts/home-context';
-import { useTheme } from '@/hooks/use-theme';
+import { useAppContext } from '@/components/AppProvider';
+import { useHomeContext } from '@/pages/home/HomeContent';
+import { useTheme } from '@/components/ThemeProvider';
 import { on, off, EVENTS } from '@/utils/event-bus';
 import type {
    TaskInfoItemResponseBody,

src/pages/login/components/ChangePasswordModal.tsx

@@ -12,7 +12,7 @@ import { useState, useCallback } from 'react';
 import { Modal, Input, Button, Typography, App } from 'antd';
 import { LockOutlined, KeyOutlined, SafetyOutlined } from '@ant-design/icons';
 
-import { useTheme } from '@/hooks/use-theme.ts';
+import { useTheme } from '@/components/ThemeProvider';
 import { AuthAPI } from '@/services/modules';
 import { validatePassword, validateConfirmPassword } from '../config/validators';
 

src/pages/login/components/ForgotPasswordModal.tsx

@@ -18,7 +18,7 @@ import {
    KeyOutlined,
 } from '@ant-design/icons';
 
-import { useTheme } from '@/hooks/use-theme.ts';
+import { useTheme } from '@/components/ThemeProvider';
 import { AuthAPI } from '@/services/modules';
 import {
    validatePhone,

src/pages/login/index.tsx

@@ -10,8 +10,8 @@
 import { useState, useCallback } from 'react';
 import { Modal, Tabs, Typography, App } from 'antd';
 
-import { useAppContext } from '@/contexts/app-context.ts';
-import { useTheme } from '@/hooks/use-theme.ts';
+import { useAppContext } from '@/components/AppProvider';
+import { useTheme } from '@/components/ThemeProvider';
 import { LoginForm } from './components/LoginForm';
 import { RegisterForm } from './components/RegisterForm';
 import { ForgotPasswordModal } from './components/ForgotPasswordModal';

src/pages/settings/SettingsPage.tsx

@@ -14,7 +14,7 @@
 import { useCallback } from 'react';
 import { Modal } from 'antd';
 import { SettingOutlined, CloseOutlined } from '@ant-design/icons';
-import { useAppContext } from '@/contexts/app-context';
+import { useAppContext } from '@/components/AppProvider';
 import { isMacOS } from '@/utils/platform';
 import { ThemeSetting } from './blocks/ThemeSetting';
 import { StoragePathSetting } from './blocks/StoragePathSetting';

src/pages/settings/blocks/StoragePathSetting.tsx

@@ -9,7 +9,7 @@ import { useState, useCallback } from 'react';
 import { Card, Button, Input, Typography, Space, App } from 'antd';
 import { FolderOpenOutlined, DeleteOutlined, EditOutlined } from '@ant-design/icons';
 import type { Edition } from '@shared/types';
-import { useSettings } from '@/contexts/settings-context';
+import { useSettings } from '@/components/SettingsProvider';
 import { hasIpc, safeIpcInvoke } from '@/utils/ipc';
 import { BIDIRECTIONAL } from '@shared/constants/ipc-channels';
 

src/pages/settings/blocks/SystemInfoSetting.tsx

@@ -9,7 +9,7 @@ import {
    InfoCircleOutlined,
    EnvironmentOutlined,
 } from '@ant-design/icons';
-import { useAppContext } from '@/contexts/app-context';
+import { useAppContext } from '@/components/AppProvider';
 import { getPlatformName } from '@/utils/platform';
 import { APP_VERSION } from '@shared/constants/version';
 import { getEditionName } from '@shared/constants/app';

src/pages/settings/blocks/ThemeSetting.tsx

@@ -4,7 +4,7 @@
 
 import { Card, Segmented, Typography } from 'antd';
 import { BulbOutlined, BulbFilled } from '@ant-design/icons';
-import { useTheme } from '@/hooks/use-theme';
+import { useTheme } from '@/components/ThemeProvider';
 
 const { Text } = Typography;