Module journal 

Journal subsystem: append-only writer, reader, encoding, and replay harness.

The journal is the canonical source of truth for all engine state. State is derived by deterministic replay of journal events through the crate::reducer.

Re-exports

pub use async_writer::AsyncJournalWriter;

pub use encoding::CborEncoding;

pub use encoding::Encoding;

pub use encoding::JournalEncoding;

pub use encoding::NdJsonEncoding;

pub use error::JournalError;

pub use error::ReplayError;

pub use reader::JournalReader;

pub use reader::verify_hash_chain;

pub use replay::CheckpointData;

pub use replay::ReplayConfig;

pub use replay::ReplayResult;

pub use replay::load_checkpoint_data;

pub use replay::replay;

pub use replay::replay_from_journal;

pub use replay::scan_last_checkpoint;

pub use writer::FsyncPolicy;

pub use writer::JournalMeta;

pub use writer::JournalWriter;

pub use writer::JournalWriterBuilder;

Modules

async_writer

Async journal writer that decouples disk I/O from the engine loop.

encoding

Journal encoding trait and implementations (JOURNAL_SPEC §6).

error

Error types for the journal subsystem.

reader

Journal reader with sequence and event_id validation.

replay

Replay harness implementing JOURNAL_SPEC §9.2.

writer

Append-only journal writer with length-prefixed framing.