Module replay 

Replay and time-travel debugging system.

Implements:

• Incremental checkpointing with compression
• Event journaling for perfect replay
• Time-travel scrubbing to any simulation time

Advanced TPS Kaizen (Section 4.3)

• Zero-Copy Streaming Checkpoints (4.3.3): Stream directly to mmap [50]
• Split Event Journal (4.3.4): Header/payload separation for fast scrubbing [50][54]
• Schema Evolution (4.3.7): Version headers with migration support [50]

Structs

Checkpoint

Checkpoint with compressed state.

CheckpointHeader

Checkpoint header for streaming checkpoints.

CheckpointManager

Checkpoint manager for incremental checkpointing.

EventHeader

Compact event header for fast time scrubbing [50][54].

EventJournal

Event journal for perfect replay.

JournalEntry

Journal entry for event replay.

SchemaMigrator

Schema migrator for backward compatibility [50].

SplitEventJournal

Split event journal for efficient time scrubbing [50][54].

StreamingCheckpointManager

Zero-copy streaming checkpoint manager [50].

TimeScrubber

Time-travel scrubber for interactive debugging.

VersionedEntry

Versioned journal entry for schema evolution [50].