The caller-supplied public options object (any of the providers' pagination option interfaces), when provided.
The provider's caps, fallbacks, and naming shape.
The resolved per-entry size, start entry, entry cap, look-ahead window, and diagnostics mode.
Resolve a provider traversal's numeric options and diagnostics mode in one place: the per-entry size against the provider's cap, the start entry, the entry cap, the look-ahead window against MAX_CONCURRENCY, and the diagnostics mode. Both provider paginators call this with their per-provider PaginationDefaults instead of hand-copying the resolution preamble per helper.