Refactor code to use `Val1` and `Val2` instead of `Item1` and `Item2`
for
iterator access. Simplify `PlaceMarkCommand` and `WinCheckSystem` by
replacing `while` loops with `foreach` and removing redundant comments.
- Replace manual `while (iter.MoveNext())` loops with `foreach` loops in
tests
- Implement batching and mutation flushing in `CommandQueue.ExecuteAll`
to
ensure chained commands see each other's changes
Update the ECS engine to support automatic mutation tracking for
singletons during iteration, removing the need for manual
`MarkModified` calls.
- Update `ComponentDiscoveryGenerator` to detect singleton components.
- Refactor `PlaceMarkCommand` and `WinCheckSystem` to leverage
automatic mutation marking.
- Replace `ForEach` usage with `Select` and `ItemN` access in tests
and systems to align with the updated iterator API.
- Add xUnit test projects for both games
- Implement game flow tests for Blackjack
- Implement game flow tests for TicTacToe
- Rename namespaces and projects to follow `Game.*` convention
- Add documentation for testing games
hypercross