mds

Per-container-set SQLite metadata and a content-addressable blob store.

mds is a library. It has no daemon of its own: maild links it, and blobd will link it as the blob store. It provides the Mds trait, the production implementation SqliteCasMds (one data.sqlite per set, one box-wide blobs.sqlite index, and a flat CAS directory), and a MemMds for tests behind the mem-store feature.

• Immutable content, multi-container mutable metadata, ordered access within a container, and a change log.
• Set and container lifecycle, blob put and get with BLAKE3 addressing, item add, copy, move and flags, change feeds, rebuild, verify, gc, export and import.
• Events are emitted after the durable commit, to an in-process sink. Publishing them on the Bus is the consumer's job.

The operator command-line binary is not ported yet.