Files
Ed Zynda c5e6ca6e4d feat: Add kit install command for git-based extension distribution
Add comprehensive extension installation system for Kit:

Features:
- kit install <git-url> - Install extensions from git repos
- kit install <url> --local - Install to project .kit/git/ directory
- kit install <url> --select - Interactive selection for multi-extension repos
- kit install <url> --update - Update installed extensions
- kit install <url> --uninstall - Remove installed extensions
- Version pinning via @ref (tags, branches, commits)
- Support multiple URL formats (shorthand, git:, https, ssh)

Implementation:
- internal/extensions/installer.go - Git clone, checkout, validation
- internal/extensions/manifest.go - Package tracking with Include filtering
- internal/extensions/loader.go - Respect Include field when loading
- cmd/install.go - Cobra command with interactive prompts
- PromptMultiSelectConfig API - Multi-select prompts for extensions

Storage:
- Global: ~/.local/share/kit/git/<host>/<owner>/<repo>/
- Project: .kit/git/<host>/<owner>/<repo>/
- Manifests: packages.json tracking installed packages

Examples:
- Reorganized examples/extensions/ with README.md
- Added status-tools/ multi-file extension example
- Created comprehensive install guide in SKILL.md

Testing:
- Added installer_test.go with 15+ test cases
- All tests pass, build clean

Closes #extension-distribution
2026-03-18 16:21:31 +03:00
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