v1.4.0

Full Changelog: v1.3.2...v1.4.0

CHANGES

• 📑 Extracted constants into organized pattern, limit, and message objects
• 🔄 Refactored command handlers into separate, focused methods for clarity
• 🛡️ Added unified heading level adjustment method with bounds checking
• 🔗 Introduced semantic aliases for text sanitization and anchor creation
• 📬 Consolidated error messages into centralized MESSAGES constant object
• 🔍 Improved code readability with consistent constant usage throughout codebase
• 📚 Added proper JSDoc documentation for key utility methods
• 🔧 Simplified heading level manipulation with bidirectional adjustment support
• 🛠️ Enhanced maintainability by reducing magic strings and numbers
• 🔢 Bumped version to 1.4.0 reflecting significant refactoring improvements