test: prevent image snapshot payload leakage (#278)

server/app/goauto/task/image_search_link_test.go

@@ -3,6 +3,7 @@ package task
 import (
 	"context"
 	"encoding/json"
+	"strings"
 	"testing"
 
 	"go-admin/app/goauto/models"
@@ -21,6 +22,28 @@ func TestImageSearchPriceAllowedRefusesCrossCurrency(t *testing.T) {
 	}
 }
 
+func TestImageSearchPayloadOnlyContainsImageMetadata(t *testing.T) {
+	secret := `{"shopeeProductId":99,"representativeSybProductId":1,"maxPriceRatio":3,"referenceCurrency":"TWD","imageUrl":"https://example.invalid/ref.jpg","mediaType":"image/jpeg","sizeBytes":10,"sha256":"0123456789012345678901234567890101234567890123456789012345678901"}`
+	record := models.CollectionTask{Source: models.CollectionTaskSourceImageSearch, RuleSnapshot: `{}`, ImageSearchSnapshot: &secret}
+	payload, err := NewService(nil).payload(record, false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw := string(payload.ImageSearch)
+	if raw == "" || containsAny(raw, "shopeeProductId", "referenceCurrency") {
+		t.Fatalf("internal snapshot fields leaked in Agent payload: %s", raw)
+	}
+}
+
+func containsAny(value string, needles ...string) bool {
+	for _, needle := range needles {
+		if strings.Contains(value, needle) {
+			return true
+		}
+	}
+	return false
+}
+
 func TestAutoLinkImageSearchDoesNotOverwriteManualAssociation(t *testing.T) {
 	db := openTaskDatabase(t)
 	manualPDD := models.PDDProduct{GoodsID: "manual-pdd", URL: "https://mobile.yangkeduo.com/goods.html?goods_id=manual-pdd", Status: "active"}