Replace the delegate-based ForEach pattern with zero-allocation ref
struct Select iterators. This change moves iteration logic from
QueryExecutor to WorldQueryExtensions and introduces a new fluent
Query<T> API.
Other changes:
- Update singleton handling to use a dictionary instead of a reserved
ID.
- Add IsSingleton flag to ComponentDescriptor.
- Replace QueryDescriptor with type-safe Query<T> structs.
- Update tests to use the new Select API.
Remove the redundant `Source` property from `IRelationship` and its
implementations. Since the relationship component is inherently
stored on the source entity, the `Source` field was unnecessary and
required manual synchronization during deserialization.
This change simplifies the relationship model, reduces memory usage,
and removes the need for reflection-based fixups in the serializer.
Enhance the OECS framework to support more robust component
deserialization during world serialization. This includes adding
boxed component support and a runtime fallback for component
discovery.
Additionally, introduces snapshot testing patterns for Blackjack
and TicTacToe to allow for manual verification of world state and
reactivity logs.
- Move examples (Blackjack, TicTacToe) to the root directory
- Convert example projects from Console applications to Libraries
- Add Directory.Build.props for shared build settings
- Update solution file and project references to reflect new paths
hypercross