From b5f740cc9e46ad94d4096fe9ad86c6972236dc9a Mon Sep 17 00:00:00 2001
From: Rushi Jagani <rushi.jagani.dev@gmail.com>
Date: Wed, 29 Jul 2026 11:06:21 -0500
Subject: [PATCH] fix: add packaged translation parity check

---
 backend/chainlit/translations/ar-SA.json |  1 +
 backend/chainlit/translations/da-DK.json |  1 +
 backend/chainlit/translations/de-DE.json |  6 ++++++
 backend/chainlit/translations/it.json    |  6 ++++++
 backend/chainlit/translations/ja.json    |  1 +
 backend/chainlit/translations/ko.json    |  6 ++++++
 backend/tests/test_translations.py       | 22 ++++++++++++++++++++++
 7 files changed, 43 insertions(+)

diff --git a/backend/chainlit/translations/ar-SA.json b/backend/chainlit/translations/ar-SA.json
index b98b427d23..b5de794c3d 100644
--- a/backend/chainlit/translations/ar-SA.json
+++ b/backend/chainlit/translations/ar-SA.json
@@ -68,6 +68,7 @@
     "favorites": {
       "use": "استخدام رسالة مفضلة",
       "headline": "الرسائل المفضلة",
+      "remove": "إزالة من المفضلة",
       "empty": {
         "title": "لا توجد رسائل محفوظة بعد",
         "description": "ابدأ بإرسال رسالة وقم بتمييزها بنجمة أو ميّز رسالة من محادثاتك السابقة"
diff --git a/backend/chainlit/translations/da-DK.json b/backend/chainlit/translations/da-DK.json
index aba214e617..8c9e8607b0 100644
--- a/backend/chainlit/translations/da-DK.json
+++ b/backend/chainlit/translations/da-DK.json
@@ -68,6 +68,7 @@
     "favorites": {
       "use": "Brug en favorit besked",
       "headline": "Favorit beskeder",
+      "remove": "Fjern favorit",
       "empty": {
         "title": "Ingen gemte prompts endnu",
         "description": "Start med at sende en prompt og markere den med en stjerne, eller vælg en prompt fra tidligere samtaler"
diff --git a/backend/chainlit/translations/de-DE.json b/backend/chainlit/translations/de-DE.json
index db5934b6f1..1469a3f569 100644
--- a/backend/chainlit/translations/de-DE.json
+++ b/backend/chainlit/translations/de-DE.json
@@ -249,6 +249,12 @@
   "components": {
     "MultiSelectInput": {
       "placeholder": "Wähle aus..."
+    },
+    "DatePickerInput": {
+      "placeholder": {
+        "single": "Datum auswählen",
+        "range": "Datumsbereich auswählen"
+      }
     }
   }
 }
diff --git a/backend/chainlit/translations/it.json b/backend/chainlit/translations/it.json
index 69021fe630..367e1bb0c9 100644
--- a/backend/chainlit/translations/it.json
+++ b/backend/chainlit/translations/it.json
@@ -249,6 +249,12 @@
   "components": {
     "MultiSelectInput": {
       "placeholder": "Seleziona..."
+    },
+    "DatePickerInput": {
+      "placeholder": {
+        "single": "Scegli una data",
+        "range": "Scegli un intervallo di date"
+      }
     }
   }
 }
diff --git a/backend/chainlit/translations/ja.json b/backend/chainlit/translations/ja.json
index b1ea49659b..aa6e6a8322 100644
--- a/backend/chainlit/translations/ja.json
+++ b/backend/chainlit/translations/ja.json
@@ -86,6 +86,7 @@
     },
     "fileUpload": {
       "dragDrop": "ここにファイルをドラッグ＆ドロップ",
+      "browse": "ファイルを参照",
       "sizeLimit": "制限：",
       "errors": {
         "failed": "アップロードに失敗しました",
diff --git a/backend/chainlit/translations/ko.json b/backend/chainlit/translations/ko.json
index f05622faf1..3a0cca3bf2 100644
--- a/backend/chainlit/translations/ko.json
+++ b/backend/chainlit/translations/ko.json
@@ -249,6 +249,12 @@
   "components": {
     "MultiSelectInput": {
       "placeholder": "선택..."
+    },
+    "DatePickerInput": {
+      "placeholder": {
+        "single": "날짜 선택",
+        "range": "날짜 범위 선택"
+      }
     }
   }
 }
diff --git a/backend/tests/test_translations.py b/backend/tests/test_translations.py
index 6e517c4748..255fa87625 100644
--- a/backend/tests/test_translations.py
+++ b/backend/tests/test_translations.py
@@ -1,10 +1,14 @@
+import json
 from io import StringIO
+from pathlib import Path
 from unittest.mock import patch
 
 import pytest
 
 from chainlit.translations import compare_json_structures, lint_translation_json
 
+TRANSLATIONS_DIR = Path(__file__).resolve().parents[1] / "chainlit" / "translations"
+
 
 class TestCompareJsonStructures:
     """Test suite for compare_json_structures function."""
@@ -311,6 +315,24 @@ def test_lint_output_format(self):
             assert len(lines) >= 2  # At least linting message + errors
 
 
+class TestPackagedTranslations:
+    """Test suite for packaged locale files."""
+
+    def test_packaged_locale_files_match_en_us_structure(self):
+        truth_path = TRANSLATIONS_DIR / "en-US.json"
+        truth = json.loads(truth_path.read_text(encoding="utf-8"))
+
+        errors = []
+        for locale_path in sorted(TRANSLATIONS_DIR.glob("*.json")):
+            locale = json.loads(locale_path.read_text(encoding="utf-8"))
+            errors.extend(
+                f"{locale_path.name}: {error}"
+                for error in compare_json_structures(truth, locale)
+            )
+
+        assert errors == []
+
+
 class TestTranslationsEdgeCases:
     """Test suite for edge cases in translations module."""