Enhance ReportPreviewOverlay to display DOC weight and improve KPI row styling. Update dashboard report payload to include docWeight, and adjust report summary to incorporate it. Add tests for docWeight functionality.

types/dashboardReport.ts

@@ -72,6 +72,8 @@ export interface DashboardReportPayload {
   kandangName: string;
   area: string;
   upToDay: number;
+  /** DOC / chick-in weight in grams from cycle settings */
+  docWeight: number | null;
   generatedAt: string;
   reportType: DashboardReportType;
   counting: DashboardReportCountingRow[];