Add JSDoc Comments to Major Functions and Components

[timDeHof]

To improve code readability and maintainability, we need to document our major functions and components using JSDoc comments. This will help new contributors and team members understand the codebase more easily.

Acceptance Criteria:

• Add JSDoc comments to all major functions and components.
• Ensure comments are clear and concise, explaining the purpose and usage.
• Optionally, generate and host documentation using a tool like TypeDoc.