Fix/workers and schedulers

[Muizzyranking]

Summary

Provide a brief overview of the changes in this PR.

Type of Change

• New Feature
• Bug Fix
• Refactor
• Chore (dependencies, documentation, etc.)
• Test Addition/Update

Key Changes

• List major architectural or logic changes.
• Mention new database models or schema updates.
• Describe any new API endpoints or services.

Database Migrations

• This PR includes database migrations (alembic/versions/).
• Migrations have been tested locally.

Testing Strategy

• Unit tests added/updated.
• Integration tests added/updated.
• Manual testing performed.

Checklist

• Code follows the project's style guidelines.
• uv.lock and pyproject.toml are updated.
• Documentation (in docs/) has been updated if necessary.
• I have verified the changes in a local environment.

Screenshots / Console Logs

(Optional: Add any relevant visual evidence of the change)