docs: add sk installation instructions

[alizain]

sk is a universal package manager (works across all coding agents), handles updates, etc.. (npm/cargo for agents).

would you be open to adding this?

Summary by CodeRabbit

• Documentation
  • Updated installation instructions with guidance for using the sk package manager to install claude-plugin osgrep.

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[coderabbitai]

Walkthrough

Documentation update adding installation instructions for the sk package manager to README.md, introducing commands for installing the claude-plugin osgrep package in two locations within the file.

Changes

Cohort / File(s)	Summary
Installation Documentation README.md	Added sk package manager installation guidance with commands: sk pkg add claude-plugin osgrep@Ryandonofrio3/osgrep and sk sync in two sections

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Hoppy changes, dear friend!
Installation paths now extend,
With sk commands so neat,
Claude's plugin's more sweet,
README magic—let adoption ascend! 📚✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'docs: add sk installation instructions' directly and clearly describes the main change: adding documentation for sk installation, which matches the changeset that adds installation guidance to README.md.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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📜 Recent review details

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

📥 Commits

Reviewing files that changed from the base of the PR and between 51906e2 and bdaf2bf.

📒 Files selected for processing (1)

• README.md

🔇 Additional comments (1)

README.md (1)

86-93: Verify sk package manager and command syntax accuracy.

The new section integrates well with existing installation documentation and maintains consistent formatting with the Claude Code and Opencode plugin sections. However, the external reference to the sk package manager and its command syntax cannot be independently validated—no public documentation is available for this tool.

Confirm:

1. The sk GitHub link (https://github.com/803/skills-supply) is valid and current
2. The command syntax sk pkg add claude-plugin osgrep@Ryandonofrio3/osgrep and sk sync are correct
3. osgrep is actually published to the sk registry

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