fix(categories): fallback to product name, description and details when translations are missing

apps/backend/src/routes/categories.ts

@@ -248,6 +248,9 @@ export const categoriesRoute = new Elysia({ prefix: "/categories" })
              descObj[t.langCode] = t.description;
              detailsObj[t.langCode] = t.details;
           });
+          if (!nameObj.th && p.name) nameObj.th = p.name;
+          if (!descObj.th && p.description) descObj.th = p.description;
+          if (!detailsObj.th && p.details) detailsObj.th = p.details;
           return {
             ...p,
             name: nameObj,
@@ -259,9 +262,9 @@ export const categoriesRoute = new Elysia({ prefix: "/categories" })
           const trans = p.translations?.find((t: any) => t.langCode === lang) || p.translations?.find((t: any) => t.langCode === 'th') || p.translations?.[0];
           return {
             ...p,
-            name: trans?.name || p.brand?.name || '',
-            description: trans?.description,
-            details: trans?.details,
+            name: trans?.name || p.name || p.brand?.name || '',
+            description: trans?.description || p.description,
+            details: trans?.details || p.details,
             category: { ...p.category, name: resolveCatName(p.category, lang) },
           };
         }