fix(growth): harden deterministic report evidence

internal/growth/opportunities.go

@@ -9,7 +9,7 @@ import (
 func historicalWins(history []DailyPoint, catalog []Event, before time.Time) []EventEffect {
 	wins := make([]EventEffect, 0)
 	for _, event := range catalog {
-		if !event.EndDate.Before(before) {
+		if !dateBefore(event.EndDate, before) {
 			continue
 		}
 		effect := AnalyzeEventEffect(history, event, catalog)
@@ -48,7 +48,7 @@ func buildOpportunities(wins []EventEffect, catalog []Event, forecast Forecast,
 		historical := eventByID[win.EventID]
 		upcoming := make([]Event, 0)
 		for _, event := range catalog {
-			if !event.EndDate.Before(start) {
+			if !dateBefore(event.EndDate, start) {
 				upcoming = append(upcoming, event)
 			}
 		}
@@ -93,7 +93,7 @@ func buildOpportunities(wins []EventEffect, catalog []Event, forecast Forecast,
 func filterCatalog(catalog []Event, category string) []Event {
 	filtered := make([]Event, 0, len(catalog))
 	for _, event := range catalog {
-		if category == "" || len(event.Categories) == 0 || slices.Contains(event.Categories, category) {
+		if category == "" || event.Universal || slices.Contains(event.Categories, category) {
 			filtered = append(filtered, event)
 		}
 	}