Summary of Changes

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This pull request migrates the project's internal AI skill registry from YAML to TOML. The primary motivation for this change is to eliminate the unmaintained serde_yaml dependency, which was flagged during supply chain audits, and replace it with the actively maintained toml crate. This change includes updating the registry files and the corresponding parsing logic in the CLI tool.

Highlights

• Dependency Management: Removed the unmaintained serde_yaml dependency and added toml to improve supply chain security.
• Registry Migration: Migrated internal AI skill registry files (personas and recipes) from YAML to TOML format.
• Codebase Update: Updated the generate_skills module to parse TOML files instead of YAML, ensuring compatibility with the new registry format.

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