Substrate Crates

Rust crates powering the learn domain and research infrastructure. Each page is a summary that links to the canonical crate source — the code and its doc comments are the source of truth.

• storage-provider — persistence traits + privacy classes
• kbd-runtime — signed event-sourced workflow authority
• learner-model — CRDT learner state + FSRS-6
• surface-bridge — Tier 2 UI server (:7890)
• sovereign-client — Rust SDK for sovereign-sync
• prometheus-research — deep-research daemon (:7891)
• sovereign-sync — P2P CRDT sync daemon (existing section)