chronicle/
├── src/
│ ├── bin/chronicle.rs # CLI entry point
│ ├── lib.rs # Library root (public API)
│ ├── fuser_filesystem.rs # FUSE backend (macFUSE/libfuse)
│ ├── fskit_filesystem.rs # FSKit backend (macOS 26+, no macFUSE)
│ ├── cas.rs # Content-Addressable Store (BLAKE3, chunking, layers)
│ ├── iteration.rs # Iteration (version) management
│ ├── metadata_cache.rs # In-memory metadata cache (DashMap)
│ ├── types.rs # FileMetadata, IterationInfo
│ ├── errors.rs # Error types
│ ├── cache.rs # Read caching
│ ├── metrics.rs # Performance metrics
│ ├── sync_database.rs # SQLite database abstraction
│ ├── protocol.rs # Magic file API (.chronicle/query/*)
│ ├── storage/
│ │ ├── local.rs # LocalFileCAS (filesystem-backed)
│ │ ├── s3.rs # S3CAS (cloud-backed)
│ │ ├── socket_cas.rs # SocketCAS (CAS over replication socket)
│ │ ├── tiered.rs # TieredCAS (local + S3 with promotion)
│ │ └── traits.rs # ContentStorage trait
│ ├── replication/
│ │ ├── push_manager.rs # Push notifications (agent → sandbox)
│ │ ├── receiver.rs # Receive notifications (sandbox side)
│ │ ├── reconcile.rs # Reconciliation engine
│ │ ├── socket_transport.rs # Wire protocol (bincode over Unix socket)
│ │ ├── ws_transport.rs # WebSocket transport (for E2B sandboxes)
│ │ ├── journal.rs # Write-back journal (sandbox → agent)
│ │ ├── writeback_loop.rs # Write-back processing
│ │ ├── filter.rs # Gitignore-compatible sync filtering
│ │ ├── content_fetcher.rs # Large file fetch over replication
│ │ └── notifier.rs # File change notifications
│ └── platform/
│ └── macos.rs # macOS version detection, FSKit availability
└── Cargo.toml
