Expert guidance for building Entity Component System (ECS) applications with Sparze, a Zig ECS library. Use when working with Sparze ECS code for (1) Writing system functions with query filters, (2) Organizing systems with single responsibility and proper execution order, (3) Designing component architectures and groups, (4) Using query modifiers (Optional, Exclude, Free), (5) Managing resources and events, (6) Understanding performance trade-offs between Query/Group/SingleQuery, (7) Implementing event-driven system chains, (8) Implementing deferred commands pattern, or (9) Any other Sparze ECS development tasks.