Derive Macros

From lonis-derive, re-exported by lonis-schema behind its derive feature (and by the facade behind derive).

#[derive(LonisCapabilities)]

Generates the five-method Capabilities impl from one attribute:

#![allow(unused)]
fn main() {
#[derive(LonisCapabilities)]
#[lonis(tool_id = "amari:discovery:search")]
struct SearchTool;
}

Defaults: current protocol SchemaVersion, all three output modes, the baseline exit-code map, CARGO_PKG_VERSION.

#[derive(BlockPayload)]

Generates, from one enum declaration (ADR-0004):

• adjacently-tagged {"kind", "data"} serde impls,
• kind_name() — snake_case variant names, dot-namespaced via #[lonis_payload(namespace = "karpal")] → karpal.search,
• schema_id() — lonis.block/<kind>/v1,
• render_human() — a <kind>: <Debug> default, or a hook: render_fn = "path::to::render" (fn(&Self) -> String).

Supports struct variants (named fields) and unit variants (data: null). Tuple variants and generics are compile errors. Unknown kinds are rejected on the vertical's own enum (closed universe); cross-vertical tolerance lives host-side in BlockKind::Extension.

Consumers need serde and serde_json as dependencies; the enum must implement Debug when using the default render.