Module mvcc 

MVCC-lite snapshot system for SQLiteGraph

Provides deterministic, read-only snapshots using the S3 Hybrid approach:

• SnapshotState stores immutable cloned HashMaps (not Arc-shared)
• ArcSwap provides lock-free atomic updates
• Read-only SQLite connections ensure database consistency
• Deterministic behavior with repeatable results

Structs

GraphSnapshot

MVCC-lite read-only snapshot for graph data isolation.

SnapshotManager

MVCC snapshot manager using ArcSwap for atomic updates

SnapshotState

Immutable snapshot state containing cloned adjacency data

Type Aliases

NodeId