Retrieve daily sales totals per location for a date range. Each entry includes totalSales (aggregated from transactions) and projectedSales (set via Set projected sales). Required query parameters: startDate and endDate (ISO 8601, YYYY-MM-DD). Optionally filter by locationIds; if omitted, all account locations are included. Only days with stored daily aggregation data are returned; days with no data are omitted (not returned as zero). To record or change actual sales, use the Create transactions endpoint.