Update: rewrite FinalizeTickParallel in indirect form - GetWaterFactors interface adapted to take indices, but internals are still in gather->process->scatter - Expanded TestWaterFactorsConsistency to cover for various indirection scenarios This simplifies the internals of FinalizeTickParallel and allows for more Burst jobs, but also allows for conversion of GetWaterFactors in indirect mode and state caching. Tests: unit tests + mul-tiple server demo playback (numbers within range)