manta — Rust API documentation

Per-crate rustdoc for the manta workspace, rebuilt on every push to main.

• manta-shared — wire types, config loader, JWT / Kafka / audit helpers. Also on docs.rs.
• manta-server — Axum HTTPS server, handlers, service layer, backend dispatcher. Not on docs.rs (publish = false).
• manta (CLI binary) — limited; most CLI code is private to the binary.

For prose docs see README, GUIDE, CLI, API, ARCHITECTURE.