NetworkTransactionStore

Resolves selection against this store, bounded to NetworkTransactionQuery.MAX_PAGE_LIMIT rows. baseQuery supplies any additional filters (method, host, status, free-text search, ...) layered on top of ExportSelection.All or ExportSelection.TimeRange; it is ignored for ExportSelection.Ids, which is always an exact match regardless of filters -- a caller who picked specific rows expects exactly those rows back, not a filtered subset of them.