@spec list(
  ArchAstro.Client.t(),
  ArchAstro.Types.Operations.GetApiV1SolutionInstances.Params.t()
) ::
  {:ok, ArchAstro.Types.SolutionInstanceListResponse.t()}
  | {:error, ArchAstro.Error.reason()}

List customer solution instances

Returns a forward cursor-paginated page of customer instances stamped from one solution template. Results are restricted to the caller's organization; an app-wide viewer without an organization scope is forbidden.

Pass after_cursor from a response with has_more: true to retrieve the next page. Each row includes the materialized agent, pinned template version, and local-edit count computed by the solution-instance read path.

Cursor-paginated customer solution instances visible to the caller.