name → mutator store (POST/PUT/PATCH/DELETE/…).
The shared @nanostores/query context (invalidateKeys / revalidateKeys / mutateCache).
Convenience over ctx.invalidateKeys: invalidate by route NAME (its built URLs) or by a raw URL/prefix.
Non-fatal projection losses (e.g. a GET with no response schema → unvalidated). Never thrown.
name → factory that, given path params, yields a lazy fetcher store.