This commit updates the schema migration logic to include checks for the existence of columns in a database-agnostic manner, supporting both SQLite and Postgres. It introduces new columns, ensures proper synchronization between old and new column names, adds unique indexes, and backfills missing data. This improves database compatibility and ensures data consistency for evolving schemas.
This update introduces "join codes" for games to simplify game joining. Enhancements include player role and winner management for better organization. Additionally, theme preferences are now user-configurable and persisted server-side.
