Module snapshot 

Snapshot wire types and chunk codec for array CRDT sync.

A TileSnapshot captures the full state of a tile coord-range at a specific HLC. Snapshots are used for catch-up replication (first connect, long disconnect, after log GC) so receivers can resume the op-stream from TileSnapshot::snapshot_hlc without replaying the full op history.

The actual snapshot builder (which walks engine state) lands in Phase F (Origin). This file ships only the wire shape and the streaming chunk codec.

Structs

CoordRange

A half-open coordinate range [lo, hi).

SnapshotChunk

One chunk of a streaming TileSnapshot.

SnapshotHeader

Metadata header sent before the chunk stream begins.

TileSnapshot

Full state snapshot for a tile coord-range at a specific HLC.

Traits

SnapshotSink

Receiver for completed snapshots during GC compaction.

Functions

assemble_chunks

Reassemble a TileSnapshot from a header and a slice of chunks.

decode_snapshot

Decode a TileSnapshot from MessagePack bytes produced by encode_snapshot.

encode_snapshot

Encode a TileSnapshot to MessagePack bytes.

split_into_chunks

Split a TileSnapshot into a header plus a sequence of fixed-size chunks.