adding bug description as todo comment

packages/db/src/generating-decks.ts

@@ -2,6 +2,7 @@
 - [x] Setup — hardcoded path, name, description, source language, POS
 - [x] Read wordlist — load the 1000 nouns
 - [x] Query terms — match to database, find which ones have translations
+- [ ] writing missing words to textfile for future use
 - [ ] Validation — determine validated languages from the data (e.g., ["en", "it"] if all matched terms have both)
 - [ ] Check idempotency — skip if deck exists
 - [ ] Create deck — insert with discovered validated_for_languages
@@ -9,6 +10,11 @@
 - [ ] Report — summary
 */
 
+// TODO: Wordlist contains 1000 lines but only 999 unique words (965 found + 34 missing = 999).
+// Likely cause: duplicate entry in top1000englishnouns file.
+// Investigate with: const unique = new Set(words); console.log(words.length - unique.size);
+// Fix either by deduplicating in code ([...new Set(words)]) or cleaning the source file.
+
 import fs from "node:fs/promises";
 import { db } from "@glossa/db";
 import { translations, terms } from "@glossa/db/schema";
@@ -64,12 +70,14 @@ const main = async () => {
   console.log("📖 Reading word list...");
   const sourceWords = await readingFromWordlist();
   console.log(`   ${sourceWords.length} words loaded\n`);
+
   // check if sourceWords exist in database
   console.log("🔍 Checking against database...");
   const { termIds, missingWords } =
     await checkingSourceWordsAgainstDB(sourceWords);
   console.log("words found in db: ", termIds.length);
   console.log("words NOT found in db: ", missingWords.length);
+
   // write missing words to file
   await writeMissingWordsToFile(missingWords);
 };