feat: 初始化 getskills 技能

添加 SKILL.md 文件，将 getskills 工具转换为标准技能格式

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -0,0 +1,59 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2026-03-21
+
+### Added
+- Initial release of GetSkill CLI tool
+- Search skills from getskill.work API
+- Install skills via Git clone
+- Update skills via Git pull
+- Automatic Git detection and installation guide
+  - Windows: Auto-download Git installer
+  - macOS: Homebrew installation guide
+  - Linux: Package manager installation guide
+- Cross-platform support (Windows, macOS, Linux)
+- Automatic skill file management to OpenClaw skills directory
+- Skills cache directory for Git repositories
+- Command-line interface with the following commands:
+  - `search` - Search for skills
+  - `install` - Install a skill
+  - `update` - Update an existing skill
+  - `list` - List locally installed skills
+  - `path` - Show directory paths
+  - `clean` - Clean Git cache
+- Programming API for Node.js integration
+- Comprehensive documentation (README, EXAMPLES)
+
+### Features
+- Zero external dependencies (uses only Node.js built-in modules)
+- Progress indicator for Git installer download
+- Smart skill file detection (excludes README files)
+- Automatic directory creation
+- Error handling and user-friendly messages
+
+### Documentation
+- README.md with full usage guide
+- EXAMPLES.md with real-world usage scenarios
+- API interface specification
+- Installation guides for all platforms
+
+## [Unreleased]
+
+### Planned
+- Unit tests
+- Skills version management
+- Skill dependency resolution
+- Configuration file support
+- Offline mode
+- Skill backup and restore
+- Interactive skill selection
+- Shell completion scripts
+
+---
+
+[1.0.0]: https://github.com/workskills/getskill/releases/tag/v1.0.0