Refactor Action with TypeScript and Comprehensive Testing

[jerop]

Description:

This is a high-level tracking issue to overhaul the GitHub Action. The goal is to improve maintainability, reliability, and testability by refactoring the core logic into a TypeScript package and implementing a comprehensive testing strategy.

Acceptance Criteria:

• The action's core logic is fully migrated to a TypeScript package.
• Comprehensive unit and integration tests are in place.
• The action.yml is simplified to an orchestrator of the TypeScript package.
• The overall developer experience for maintaining and contributing to the action is significantly improved.

[gemini-cli]

🤖 Hi @jerop, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[gemini-cli]

🤖 I'm sorry @jerop, but I was unable to process your request. Please see the logs for more details.