@type t() :: %FerricStore.Flow.QueryIndexBuild{
  completed_shards: non_neg_integer(),
  current_phases: [binary()],
  phase_counts: %{required(binary()) => non_neg_integer()},
  raw: map(),
  scanned_records: non_neg_integer(),
  scope: binary(),
  total_shards: pos_integer(),
  written_bytes: non_neg_integer(),
  written_entries: non_neg_integer()
}