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flying-hero 96f6318101 📦 添加虚拟环境和启动脚本

新增:
- backend/venv/ - Python 虚拟环境
- backend/start.sh - 启动脚本（使用虚拟环境）
- backend/requirements.txt - 依赖列表
- .gitignore - 忽略虚拟环境和缓存文件

说明:
- 每个项目使用独立虚拟环境
- 避免依赖冲突
- 启动脚本自动创建和激活虚拟环境

2026-04-04 18:29:02 +08:00

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jsx-a11y/no-redundant-roles

💼 This rule is enabled in the following configs: ☑️ recommended, 🔒 strict.

Some HTML elements have native semantics that are implemented by the browser. This includes default/implicit ARIA roles. Setting an ARIA role that matches its default/implicit role is redundant since it is already set by the browser.

Rule options

The default options for this rule allow an implicit role of navigation to be applied to a nav element as is advised by w3. The options are provided as an object keyed by HTML element name; the value is an array of implicit ARIA roles that are allowed on the specified element.

{
  'jsx-a11y/no-redundant-roles': [
    'error',
    {
      nav: ['navigation'],
    },
  ],
}

Succeed

<div />
<button role="presentation" />
<MyComponent role="main" />

Fail

<button role="button" />
<img role="img" src="foo.jpg" />

Accessibility guidelines

General best practice (reference resources)

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