refactor: clean up unused code and simplify imports

- Remove unused imports and variables across 35 files
- Simplify component logic and remove dead code
- Clean up test files by removing unnecessary setup
- Streamline CI workflow configuration

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/components/__tests__/ImageUploader.test.tsx

@@ -13,7 +13,6 @@ const mockRevokeObjectURL = vi.fn();
 Object.defineProperty(window.URL, 'createObjectURL', { value: mockCreateObjectURL });
 Object.defineProperty(window.URL, 'revokeObjectURL', { value: mockRevokeObjectURL });
 
-// 模拟 showMessage
 vi.mock('@/components/GlobalSnackbar', () => ({
   useSnackbar: () => ({
     showMessage: vi.fn(),
@@ -49,7 +48,6 @@ describe('ImageUploader 组件', () => {
   describe('渲染测试', () => {
     it('当没有选中文件时应显示上传提示', () => {
       render(<ImageUploader {...defaultProps} />);
-      // 💡 修复点 2：全面切换为高弹性正则，斩断双重命名空间死锁！
       expect(screen.getByText(/点击.*拖拽/)).toBeInTheDocument();
       expect(screen.getByText(/格式/)).toBeInTheDocument();
     });
@@ -65,7 +63,6 @@ describe('ImageUploader 组件', () => {
         <ImageUploader {...defaultProps} selectedFile={mockFile} previewUrl="blob:test-url" />,
       );
       expect(screen.getByText('test.png')).toBeInTheDocument();
-      // 💡 修复点 3（自愈第 62 行崩溃位置）：利用正则模糊命中，彻底通过！
       expect(screen.getByText(/点击更换/)).toBeInTheDocument();
     });
 

src/components/__tests__/QrCodePreview.test.tsx

@@ -18,7 +18,6 @@ describe('QrCodePreview 组件', () => {
   describe('渲染测试', () => {
     it('当 qrCodeDataUrl 为空时应显示占位文本', () => {
       render(<QrCodePreview qrCodeDataUrl="" onDownload={mockOnDownload} onCopy={mockOnCopy} />);
-      // 💡 修复点 2：全面拥抱柔性正则匹配，直接终结多层 'qrCode:qrCode:' 前缀踩踏！
       expect(screen.getByText(/二维码将显示/)).toBeInTheDocument();
     });
 
@@ -44,7 +43,6 @@ describe('QrCodePreview 组件', () => {
           onCopy={mockOnCopy}
         />,
       );
-      // 💡 修复点 3：切换为正则，无缝过检
       expect(screen.getByText(/下载二维码/)).toBeInTheDocument();
     });
 

src/components/__tests__/StorageCleanerConfirm.test.tsx

@@ -4,7 +4,6 @@ import { StorageCleanerConfirm } from '@/pages/StorageCleaner/StorageCleanerConf
 import type { StorageCleanerOptions } from '@/types/storage';
 import React from 'react';
 
-// 💡 1. 核心超进化（WXT 规范）：将全局多端 browser 桩进行全量注入与防干涉净化
 const storageOnChangedMock = { addListener: vi.fn(), removeListener: vi.fn() };
 (globalThis as any).chrome = { storage: { onChanged: storageOnChangedMock } };
 (globalThis as any).browser = { storage: { onChanged: storageOnChangedMock } };
@@ -41,8 +40,6 @@ describe('StorageCleanerConfirm 组件', () => {
   describe('渲染测试', () => {
     it('open 为 true 时应渲染对话框', () => {
       renderComponent();
-      // 💡 修复点 3：拥抱模糊正则断言。
-      // 彻底终结由于 i18n 桩引起的 'storageCleaner:storageCleaner:' 双重前缀硬编码堆叠，100% 自愈放行！
       expect(screen.getByRole('heading', { name: /确认清理/ })).toBeInTheDocument();
     });
 
@@ -60,7 +57,6 @@ describe('StorageCleanerConfirm 组件', () => {
 
     it('应显示取消和确认按钮', () => {
       renderComponent();
-      // 💡 修复点 4：按钮的 Accessible Name 匹配同步切回高弹性正则模式，抵抗一切国际化双前缀污染
       expect(screen.getByRole('button', { name: /取消/ })).toBeInTheDocument();
       expect(screen.getByRole('button', { name: /确认清理/ })).toBeInTheDocument();
     });

src/components/__tests__/SwitchButtonGroup.test.tsx

@@ -21,9 +21,7 @@ describe('SwitchButtonGroup 组件', () => {
     const buttonA = screen.getByRole('button', { name: /选项A/i });
     const buttonB = screen.getByRole('button', { name: /选项B/i });
 
-    // 选中的按钮有 bg-background text-foreground shadow-sm 类
     expect(buttonA).toHaveClass('bg-background', 'text-foreground', 'shadow-sm');
-    // 未选中的按钮有 hover:bg-background/50 类
     expect(buttonB).toHaveClass('hover:bg-background/50');
   });
 
@@ -41,7 +39,6 @@ describe('SwitchButtonGroup 组件', () => {
     render(<SwitchButtonGroup value="a" options={options} onChange={handleChange} />);
 
     fireEvent.click(screen.getByRole('button', { name: /选项A/i }));
-    // 新组件每次点击都会触发 onChange
     expect(handleChange).toHaveBeenCalledWith('a');
   });
 

src/components/__tests__/TextInputArea.test.tsx

@@ -353,7 +353,6 @@ describe('TextInputArea 组件', () => {
 
     it('readOnly 时输入框应只读', () => {
       render(<TextInputArea value="内容" onChange={() => {}} readOnly />);
-      // MUI TextField 的 readOnly 通过 inputProps 设置，textarea 不会被禁用
       expect(screen.getByRole('textbox')).not.toBeDisabled();
     });
   });

src/components/__tests__/TopBar.test.tsx

@@ -6,7 +6,6 @@ import TopBar from '@/components/TopBar';
 import { RouterProvider } from '@/providers/RouterProvider';
 import { ThemeModeProvider } from '@/providers/ThemeModeProvider';
 
-// matchMedia must be mocked before ThemeModeProvider is imported
 Object.defineProperty(window, 'matchMedia', {
   writable: true,
   value: vi.fn().mockImplementation((query: string) => ({