Clean up remaining Sequelize dependencies #270
Description
Remove remaining Sequelize models, configurations, and dependencies after MongoDB migration.
Context:
- Migration from SQL to MongoDB is complete
- Sequelize artifacts still remain in codebase
- Need cleanup for maintainability and reduced bundle size
Acceptance Criteria:
- Identify all remaining Sequelize files and configurations
- Remove Sequelize from package.json dependencies
- Clean up any Sequelize model files
- Remove Sequelize configuration files
- Test application functionality after cleanup
Priority: Medium