fix(translate): return string translation stub instead of post payload

Replace the stub that returned the whole post object as "translated"
content (which Redis stored as the literal "[object Object]").
translate() is now async, returns [isEnglish, translatedText] with a
hardcoded string, and documents that the second value must stay a string
for correct hash storage.

Author: connorcarpenter15

src/translate/index.js

@@ -4,8 +4,15 @@
 
 const translatorApi = module.exports;
 
-translatorApi.translate = function (postData) {
-	return ['is_english',postData];
+/**
+ * @returns {Promise<[boolean, string]>}
+ * Second value must always be a string — Redis hashes persist fields with String(value), so objects become "[object Object]".
+ */
+translatorApi.translate = async function (postData) {
+	// Stub: real implementation would call a translation API and assign a string to translatedContent.
+	const isEnglish = false;
+	const translatedContent = 'This is a hardcoded English translation returned from the translator API.';
+	return [isEnglish, translatedContent];
 };
 
 // translatorApi.translate = async function (postData) {
@@ -14,4 +21,4 @@ translatorApi.translate = function (postData) {
 //  const response = await fetch(TRANSLATOR_API+'/?content='+postData.content);
 //  const data = await response.json();
 //  return ['is_english','translated_content'];
-// };
+// };