Expand Artgrid query coverage to artlist canonical URLs

backend/services/cse_test.go

@@ -1,6 +1,9 @@
 package services
 
-import "testing"
+import (
+	"strings"
+	"testing"
+)
 
 func TestExtractVideoPreviewURLFindsEnvatoPreview(t *testing.T) {
 	html := `<script type="application/ld+json">{"contentUrl":"https://video-previews.elements.envatousercontent.com/ad0a3abc-7eb0-4075-8f68-8198f9a08777/watermarked_preview/watermarked_preview.mp4"}</script>`
@@ -64,6 +67,20 @@ func TestIsRenderableArtgridResultAcceptsArtlistCanonical(t *testing.T) {
 	}
 }
 
+func TestBuildArtgridQueriesIncludesArtlistCanonicalDomain(t *testing.T) {
+	queries := buildArtgridQueries("friendly couple")
+	found := false
+	for _, query := range queries {
+		if strings.Contains(query, "site:artlist.io/stock-footage/clip/") {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatal("expected Artgrid queries to include artlist canonical domain")
+	}
+}
+
 func TestGeminiCandidateLimitNeverExceedsCandidates(t *testing.T) {
 	if got := GeminiCandidateLimit(9); got != 9 {
 		t.Fatalf("expected Gemini limit to stay within candidate count, got %d", got)