r.claimKey(...)
Overview
Section titled “Overview”r.claimKey(shortName, { type }) — declares a session-claim key,
qualified to <feature>:<shortName> (no kebab conversion — it would
break the claim round-trip), and returns a typed handle for
readClaim(user, handle). Declaring keys also enables typo-drift
protection: r.authClaims hooks returning an undeclared inner key log a
warning (the claim still lands in the JWT — this is not strict mode).
From packages/framework/src/engine/feature-ast/patterns.ts -> ClaimKeyPattern