- Add persist.rs: std-only NDJSON snapshot of the HashBackend store
(no serde) for the durable checkpoint + load_into_store replay.
- Add store.rs: ConcurrentStore = Mutex<HashBackend> live store + WAL
(newline-delimited JSON, group-commit fsync, idempotent seq-numbered
replay) + durable JSON checkpoint + bg flusher + startup replay.
- Recovery events (checkpoint failure, WAL fsync failure, WAL replay)
are written to a recovery.ndjson you asked to keep as the written backup
log, so any fall-back to JSON is recorded 'in writing'.
- Refactor cube-server to thread-per-connection over ConcurrentStore.
- query_doc_type / scan_prefix / linked_to / delete_raw added.
Verified: ./check (fmt, 7 unit tests, clippy -D warnings) all green;
./check stress drove 22,080 prog+run pairs (~368/s) over 60s, daemon
survived, latency prog~9us/run~13us mean.
Implements the requested cube service: a long-lived daemon that holds ONE
CubeStore for its whole lifetime and serves the cube command language over a
Unix-domain socket, plus cubec to talk to it.
- cubesys::commands: factored the single command interpreter (Session::exec)
so cube REPL, cubec client, and the daemon run identical logic
- cubesys::net: dependency-free length-framed AF_UNIX transport
- cubesys::persist: dependency-free JSON snapshot (atomic tmp+rename) so the
store -- including sealed/encrypted records -- survives daemon restarts
- cube-server: listens on $XDG_RUNTIME_DIR/cube/cube.sock, snapshots to
$XDG_STATE_HOME/cube/cube-store.json, replays on startup
- cubec: one-shot + REPL client over the socket
- cube.rs trimmed to a thin REPL/script/demo driver (help text updated)
- /etc/systemd/system/cube.service: runs as luulu, ProtectSystem=strict,
RestrictAddressFamilies=AF_UNIX, Restart=on-failure; enabled + active
- integration.md documents the daemon + caveat (open rewrites plaintext)
Verified: ./check (fmt+tests+clippy -D warnings) green; ./check mount (27
FUSE e2e) green; socket CLI round-trips; sealed record survived a full
service restart and reopened+r with original value.
CUBELinux-2