Attribute Macro doc_gen 

#[doc_gen]

Attribute macro for automatic documentation generation

Wraps diag! and generates registration code for specified formats.

Examples

#[doc_gen("json", "html")]
diag! {
    E.Auth.Token.MISSING: {
        message: "Token not found",
        // ...
    },
}

This generates a __doc_gen_registry module with format tracking.