add image magick skill

[jamesmontemagno]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• My contribution adds a new instruction, prompt, or chat mode file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, or chat mode with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.

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Description

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Type of Contribution

• New instruction file.
• New prompt file.
• New chat mode file.
• New collection file.
• Update to existing instruction, prompt, chat mode, or collection.
• Other (please specify):

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Additional Notes

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[Copilot]

Pull request overview

This pull request adds a new Agent Skill for image manipulation using ImageMagick. The skill provides comprehensive cross-platform instructions for processing images on Windows (PowerShell), Linux, and macOS (Bash).

Key Changes:

• Adds image-manipulation-image-magick skill with detailed SKILL.md documentation
• Includes examples for resizing, format conversion, batch processing, and metadata retrieval
• Provides platform-specific patterns and guidelines for both PowerShell and Bash

[aaronpowell]

README doesn't match the generated output (and there are some merge conflicts) - can you review and update

[jamesmontemagno]

@copilot open a new pull request to apply changes based on the comments in this thread and pull up and resolve any conflicts

[jamesmontemagno]

@aaronpowell how about now?