Improve chart readability and drilldowns

src/analytics/dashboard.ts

@@ -1,6 +1,7 @@
 import type { DashboardAnalytics, DateRange, OrderData } from '../types';
 import { filterOrdersByDateRange, getBaseProductName, getOrderItemRevenue, parseOrderDate } from './orders';
 import { formatDisplayName, removeTrailingSellerId } from '../displayFormatters';
+import { normalizeUnknownLabel } from '../chartUtils';
 
 const COLORS = [
   '#25C2FF', '#18D6B5', '#A06BFF', '#FF6B8A', '#FFC247',
@@ -20,6 +21,10 @@ const getProductColor = (name: string): string => {
   return globalColorMap[name];
 };
 
+const formatSellerDisplayName = (value: string) => (
+  normalizeUnknownLabel(formatDisplayName(removeTrailingSellerId(value)), 'Sem vendedor')
+);
+
 export interface ChartProductMetric {
   name: string;
   id: string;
@@ -77,23 +82,23 @@ export const applyDashboardColors = (metrics: DashboardAnalytics): DashboardMetr
     })),
     revenueBySeller: (metrics.revenueBySeller || []).map(seller => ({
       ...seller,
-      name: formatDisplayName(removeTrailingSellerId(seller.name)),
+      name: formatSellerDisplayName(seller.name),
       fill: productColors[seller.name]
     })),
     ordersBySeller: (metrics.ordersBySeller || []).map(seller => ({
       ...seller,
-      name: formatDisplayName(removeTrailingSellerId(seller.name)),
+      name: formatSellerDisplayName(seller.name),
       fill: productColors[seller.name]
     })),
     sellerRevenueByDate: (metrics.sellerRevenueByDate || []).map(seller => ({
       ...seller,
-      name: formatDisplayName(removeTrailingSellerId(seller.name)),
+      name: formatSellerDisplayName(seller.name),
       orders: seller.orders || 0,
       fill: productColors[seller.name]
     })),
     sellerRevenueByHour: (metrics.sellerRevenueByHour || []).map(seller => ({
       ...seller,
-      name: formatDisplayName(removeTrailingSellerId(seller.name)),
+      name: formatSellerDisplayName(seller.name),
       orders: seller.orders || 0,
       fill: productColors[seller.name]
     }))
@@ -118,7 +123,7 @@ export const buildDashboardMetrics = (ordersData: OrderData[], dateRange: DateRa
   filteredData.forEach(order => {
     const itemRevenue = getOrderItemRevenue(order);
     const productName = getBaseProductName(order.Descricao_Produto);
-    const sellerName = formatDisplayName(removeTrailingSellerId(order.nome_vendedor || ''));
+    const sellerName = formatSellerDisplayName(order.nome_vendedor || '');
     const sellerId = order.id_vendedor || sellerName;
     const orderKey = order.ID_Pedido || `${order.Nome_Cliente}_${order.Data_Pedido}_${order.Valor_Pedido}`;