Module sync 

Sync subsystem — staging and reconciliation of authority events.

Three-layer state model (API.md §12):

1. Canonical Truth — owned by authority (spacetime or local)
2. Client Mirror — read-optimized snapshot for runtime
3. Presentation — interpolated/render-only state (fabric + gpu)

Rules:

• Authority updates staged first, applied at tick boundary
• Presentation interpolates through correction
• No direct write from network thread into scene/render data

Re-exports

pub use reconciliation::reconcile;

pub use stage::StagingBuffer;

Modules

reconciliation

Reconciliation — apply canonical corrections at tick boundary. When authority sends corrections, presentation interpolates through them.

stage

Staging buffer — holds authority events until tick boundary application.