fix: deliver validated AI insight responses

internal/eventcatalog/impactful_catalog_test.go

@@ -0,0 +1,44 @@
+package eventcatalog
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+	"time"
+)
+
+func TestImpactfulBusinessCatalogIsValidAndIndustryPersonalized(t *testing.T) {
+	data, err := os.ReadFile("../../catalogs/impactful-business-events-1405-v1.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var input Import
+	if err := json.Unmarshal(data, &input); err != nil {
+		t.Fatal(err)
+	}
+	if err := ValidateImport(input, 1405); err != nil {
+		t.Fatal(err)
+	}
+	hasEducation, hasRetail := false, false
+	months := make(map[time.Month]bool)
+	for _, event := range input.Events {
+		if event.OfficialHoliday && event.RelevanceBPS < 7000 {
+			t.Fatalf("official holiday %s lacks evidenced business impact", event.ID)
+		}
+		for _, category := range event.MerchantCategories {
+			hasEducation = hasEducation || category == "مراکز آموزشی مجازی"
+			hasRetail = hasRetail || category == "کیف و کفش فروشی"
+		}
+		start, err := time.Parse(time.DateOnly, event.StartDate)
+		if err != nil {
+			t.Fatal(err)
+		}
+		months[start.Month()] = true
+	}
+	if !hasEducation || !hasRetail {
+		t.Fatal("catalog must include both education- and retail-specific windows")
+	}
+	if len(input.Events) < 12 || len(months) < 9 {
+		t.Fatalf("catalog must provide year-round candidate coverage; got %d events across %d months", len(input.Events), len(months))
+	}
+}