fix: close business flow regressions

backend/api/internal/logic/common/resource_test.go

@@ -31,11 +31,34 @@ func TestOperationalQueriesExcludeArchivedRecords(t *testing.T) {
 	statement := database.ToSQL(func(tx *gorm.DB) *gorm.DB {
 		return ActiveRecords(tx.Model(&models.EcProduct{})).Find(&[]models.EcProduct{})
 	})
-	if !strings.Contains(statement, `status <> 3`) {
+	if !strings.Contains(statement, `"ec_product"."status" <> 3`) {
 		t.Fatalf("archive filter missing from operational query: %s", statement)
 	}
 }
 
+func TestOperationalQueriesQualifyStatusAcrossJoins(t *testing.T) {
+	sqlDatabase, _, err := sqlmock.New()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer sqlDatabase.Close()
+	database, err := gorm.Open(postgres.New(postgres.Config{Conn: sqlDatabase}), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	statement := database.ToSQL(func(tx *gorm.DB) *gorm.DB {
+		return ActiveRecords(tx.Model(&models.StaffCredential{})).
+			Joins("JOIN staff_account ON staff_account.id = staff_credential.staff_account_id").
+			Find(&[]models.StaffCredential{})
+	})
+	if !strings.Contains(statement, `"staff_credential"."status" <> 3`) {
+		t.Fatalf("joined archive filter is not table-qualified: %s", statement)
+	}
+	if strings.Contains(statement, `WHERE status <>`) {
+		t.Fatalf("joined archive filter is ambiguous: %s", statement)
+	}
+}
+
 func TestResourceResponseStripsInternalIDsRecursively(t *testing.T) {
 	got := ResourceResponse(map[string]any{
 		"id": uint64(1), "identity": "root",