smooth-operator

The reference core for smooth-operator — the service layer on top of [smooth_operator_core] (the agent engine). It defines three things:

• [domain] — storage-agnostic domain structs (Conversation, Participant, Message, Session) that mirror spec/domain/*.json. Checkpoints re-use the engine's [smooth_operator_core::Checkpoint].
• [adapter] — the single [StorageAdapter] seam every backend implements (see docs/STORAGE.md). Its checkpoint/knowledge accessors return smooth-operator-core's own traits so the engine plugs straight in.
• [runtime] — a minimal [AgentRuntime] that constructs a real smooth-operator Agent and Workflow, proving consumption.

It also owns two shared retrieval seams both backends/consumers depend on: [embedding] (the text→vector [Embedder] + the network-free [DeterministicEmbedder], the one home for both the Postgres adapter and the ingestion pipeline) and [rerank] (the optional post-retrieval [Reranker] stage — feature gap G8).