Cleaning codebase

[mrpalide]

Unfortunately, due to a series of urgent tasks and some service deployment issues, we've strayed from the main development path in all service codebases for quite some time now. This has resulted in a significant amount of technical debt, which includes:

• Writing tests: Both new and old code lacks unit and integration tests.
• Code cleanup: Reviewing, removing, and resolving commented-out code.
• Addressing TODOs: Organizing and completing outstanding TODOs.

This issue affects all repositories and services to varying degrees. Given the substantial nature of this task, I've created a separate ticket to allow for a collective decision on how to address it at our convenience.