✨ 添加完整的GitHub Actions CI系统

[ChHsiching]

🎯 变更概述

添加完整的GitHub Actions CI系统，包括Fish语法检测、多版本兼容性测试、代码质量检查和安全扫描。

📋 主要改进

🔧 CI系统功能

• 多平台支持：Ubuntu和macOS
• 多Fish版本兼容性测试：Fish 3.3-3.6
• 语法验证：自动检查所有.fish文件语法
• PKGBUILD验证：确保AUR包构建文件正确
• 自动化测试：comprehensive test suite

🧪 测试覆盖

• 函数定义检查：确保所有函数正确定义
• 版本提取测试：验证Node.js版本解析
• 文件操作测试：.nvmrc文件创建和备份
• 代码质量检查：检测deprecated语法和代码规范
• 安全扫描：潜在安全问题检测

🛡️ 安全和质量保证

• 代码质量检查：检测deprecated语法
• 安全扫描：检查潜在的安全问题
• 跨平台兼容性：确保在不同环境下正常工作

🧪 测试验证

• ✅ Fish语法检测通过
• ✅ 函数加载测试通过
• ✅ PKGBUILD验证通过
• ✅ 综合功能测试通过

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✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch ci/fish-syntax-check

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[Copilot]

Pull Request Overview

This PR introduces a comprehensive GitHub Actions CI system for nvm-fish to ensure code quality, compatibility, and security across multiple platforms and Fish shell versions.

• Adds automated syntax validation, compatibility testing across Fish 3.3-3.6, and multi-platform support (Ubuntu/macOS)
• Implements comprehensive test coverage including function definitions, file operations, and backup functionality
• Establishes code quality checks and security scanning to detect deprecated syntax and potential security issues

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 3 comments.

File	Description
test_ci.fish	Comprehensive test script that validates Fish syntax, function definitions, version extraction, file operations, and backup functionality
.github/workflows/fish-syntax.yml	GitHub Actions workflow defining CI pipeline with multi-platform testing, code quality checks, and security scanning

Comments suppressed due to low confidence (1)

test_ci.fish:1

• The regex uses double backslashes \\ which will be interpreted as literal backslashes in Fish. Use single backslashes \ instead: 'Now using node v([0-9]+\.[0-9]+\.[0-9]+)'

#!/usr/bin/env fish

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[Copilot]

Pull Request Overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 5 changed files in this pull request and generated 4 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 5 changed files in this pull request and generated 3 comments.

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