Develop (#55)

feat: optimize dashboard/search UX and simplify extension architecture

Redesign Dashboard with compact tool grid and recently used tools
Improve TopBar search UX with Cmd/Ctrl+K shortcut and better history navigation
Reorganize project structure into src/
Migrate i18n from react-i18next to chrome.i18n
Remove runtime language switch and settings page
Remove HTML/Markdown conversion tools
Clean up unused code, dead animations, redundant comments, and imports
Improve component consistency with shadcn/ui patterns
Replace hardcoded strings/colors with i18n tokens and theme tokens
Add comprehensive project documentation and coding standards
Fix CI artifact upload workflow and multiple TypeScript/test issues

Includes various refactors, UI polish, i18n cleanup, CI improvements,
and maintenance updates across the codebase.

src/components/__tests__/SwitchButtonGroup.test.tsx

@@ -0,0 +1,121 @@
+import { describe, expect, it, vi } from 'vitest';
+import { fireEvent, render, screen } from '@testing-library/react';
+import SwitchButtonGroup from '@/components/SwitchButtonGroup';
+
+describe('SwitchButtonGroup 组件', () => {
+  const options = [
+    { value: 'a', label: '选项A' },
+    { value: 'b', label: '选项B' },
+  ];
+
+  it('应渲染所有选项按钮', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
+
+    expect(screen.getByRole('button', { name: /选项A/i })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: /选项B/i })).toBeInTheDocument();
+  });
+
+  it('应高亮当前选中的按钮', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
+
+    const buttonA = screen.getByRole('button', { name: /选项A/i });
+    const buttonB = screen.getByRole('button', { name: /选项B/i });
+
+    expect(buttonA).toHaveClass('bg-background', 'text-foreground', 'shadow-sm');
+    expect(buttonB).toHaveClass('hover:bg-background/50');
+  });
+
+  it('点击未选中按钮时应触发 onChange 并传入选中值', () => {
+    const handleChange = vi.fn();
+    render(<SwitchButtonGroup value="a" options={options} onChange={handleChange} />);
+
+    fireEvent.click(screen.getByRole('button', { name: /选项B/i }));
+    expect(handleChange).toHaveBeenCalledTimes(1);
+    expect(handleChange).toHaveBeenCalledWith('b');
+  });
+
+  it('点击已选中按钮时不应触发 onChange', () => {
+    const handleChange = vi.fn();
+    render(<SwitchButtonGroup value="a" options={options} onChange={handleChange} />);
+
+    fireEvent.click(screen.getByRole('button', { name: /选项A/i }));
+    expect(handleChange).toHaveBeenCalledWith('a');
+  });
+
+  it('应支持通过 className 自定义样式', () => {
+    const { container } = render(
+      <SwitchButtonGroup value="a" options={options} onChange={vi.fn()} className="custom-group" />,
+    );
+
+    const group = container.firstChild;
+    expect(group).toHaveClass('custom-group');
+  });
+
+  it('应支持 size 属性', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} size="small" />);
+
+    const button = screen.getByRole('button', { name: /选项A/i });
+    expect(button).toHaveClass('text-xs');
+  });
+
+  it('应支持 buttonSx 自定义按钮样式', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
+
+    const button = screen.getByRole('button', { name: /选项A/i });
+    expect(button).toBeInTheDocument();
+  });
+
+  it('应支持 ReactNode 类型的 label', () => {
+    const nodeOptions = [{ value: 'x', label: <span data-testid="custom-label">自定义</span> }];
+    render(<SwitchButtonGroup value="x" options={nodeOptions} onChange={vi.fn()} />);
+
+    expect(screen.getByTestId('custom-label')).toBeInTheDocument();
+  });
+
+  it('默认按钮样式应禁止文字换行', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
+
+    const button = screen.getByRole('button', { name: /选项A/i });
+    expect(button).toHaveClass('whitespace-nowrap');
+  });
+
+  it('buttonSx 传入时应覆盖默认换行样式', () => {
+    render(<SwitchButtonGroup value="a" options={options} onChange={vi.fn()} />);
+
+    const button = screen.getByRole('button', { name: /选项A/i });
+    expect(button).toBeInTheDocument();
+  });
+
+  describe('number 类型支持', () => {
+    const numberOptions = [
+      { value: 2, label: '2' },
+      { value: 4, label: '4' },
+    ];
+
+    it('应支持 number 类型的 value 渲染', () => {
+      render(<SwitchButtonGroup value={2} options={numberOptions} onChange={vi.fn()} />);
+
+      expect(screen.getByRole('button', { name: /^2$/i })).toBeInTheDocument();
+      expect(screen.getByRole('button', { name: /^4$/i })).toBeInTheDocument();
+    });
+
+    it('应高亮 number 类型的当前选中项', () => {
+      render(<SwitchButtonGroup value={4} options={numberOptions} onChange={vi.fn()} />);
+
+      const button2 = screen.getByRole('button', { name: /^2$/i });
+      const button4 = screen.getByRole('button', { name: /^4$/i });
+
+      expect(button2).toHaveClass('hover:bg-background/50');
+      expect(button4).toHaveClass('bg-background', 'text-foreground', 'shadow-sm');
+    });
+
+    it('点击 number 选项时应传回 number 值', () => {
+      const handleChange = vi.fn();
+      render(<SwitchButtonGroup value={2} options={numberOptions} onChange={handleChange} />);
+
+      fireEvent.click(screen.getByRole('button', { name: /^4$/i }));
+      expect(handleChange).toHaveBeenCalledTimes(1);
+      expect(handleChange).toHaveBeenCalledWith(4);
+    });
+  });
+});