@onlyworlds/sdk 4.21.0

Added

• client.allowance(): GET /account/allowance (keel 872431f, Skeld h37 #4308), the
  account's daily AI allowance read without spending: token_rating, tokens_used_today,
  tokens_remaining, resets_at (the next midnight UTC). Account token only, like ask and
  sort. Type OwAllowance, held by Assembly's wire gate to the route's declared schema, as
  OwAskAnswer, OwSortAnswer and OwJoinPreview now are to theirs.

Fixed

• README and AGENTS.md no longer say a sort counts as one ask: since keel a6244db both spend
  tokens from the allowance.