Improve logging and error handling across the application

[kmuwanga83]

📌 Problem

Error handling and logging are limited or inconsistent.

🎯 Objective

Improve debugging and system reliability.

✅ Tasks

• Add consistent logging
• Improve error messages
• Handle edge cases

🧪 Acceptance Criteria

• Logs are meaningful and consistent
• Errors are handled gracefully
• Debugging becomes easier