Technical: Implement Swagger Documentation Endpoint

[theodanel]

Summary

Set up Swagger to document all API endpoints

Details

Provide the necessary interactive documentation interface (Swagger UI) that will serve as the primary tool for demonstration, testing, and understanding the API (Endpoints, DTOs, Parameters).

Subtasks

• Add the correct Swagger dependency to the project's build file (Maven/Gradle).
• Configure the main application class to enable the documentation endpoint.
• Annotate Controllers and DTOs with descriptions to make the documentation clear.
• Verify that the generated Swagger documentation reflects all API features implemented so far.

Additional Notes / References

No response

Pre-Work Checklist

• No existing issue covers this work.