Issue #53 - User Activity logging

Feature Request Template

Title

Format: feat(activity-logging): add robust user activity logging system

Description

This merge request implements a new feature for robust user activity logging.

• Adds an activity logging system with role and IP tracking.
• Integrates logging into key API endpoints for auditability and moderation.
• Includes Alembic migration for the activity_logs table.

Checklist

• The feature has been fully implemented.
• Tests for the new feature are included and passing.
• User documentation/guides have been updated (if applicable).
• Impact on existing functionality has been considered.

Related Issue(s)

Closes #53