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zeekay
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Establish PVM (Platform-VM) GPU substrate scaffold for LP-137
GPU-native compliance:
- pvm_gpu_layout.hpp ValidatorSlot, StakeRecord/Op, SlashEvidence,
EpochState, PVMRoundDescriptor, ValidatorOp,
PVMTransitionResult — all 16-byte aligned with
explicit pad to fixed arena strides for
byte-stable host/device ABI
- pvm_cpu_reference.cpp Deterministic CPU oracle implementing four
canonical kernels: ValidatorSetApply,
StakeTransition, SlashingTransition,
EpochTransition (root composition)
- pvm_layout_test 12 layout + reference-determinism checks; all
pass with byte-identical roots across runs
This closes the layout half of the P-Chain GPU-native gap. v0.53 ships
the matching CUDA + Metal transition kernels and the cross-backend
determinism harness.
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