Demo 3: Tumble Tower — controlled desync breakers (physics edition) #236
Description
Goal: create intentional nondeterminism toggles tailored to physics so we can teach and test desync diagnosis.
Examples
- Unstable contact ordering.
- Floating-point nondeterminism mode toggle (if applicable).
- Non-canonical math operations (e.g., platform transcendentals if they sneak in).
- Non-deterministic sleeping/island ordering.
Acceptance criteria
- Each breaker produces a reproducible divergence with a clear first mismatch tick.