diff --git a/apps/desktop-ui/messages/af.json b/apps/desktop-ui/messages/af.json
index aa61f875..ea5840a3 100644
--- a/apps/desktop-ui/messages/af.json
+++ b/apps/desktop-ui/messages/af.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Laai redigeerder…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Beeld na Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopieer",
     "headSnippet": "HTML head-snipper",
     "downloadIco": "Laai favicon.ico af",
-    "downloadZip": "Laai alles af (.zip)"
+    "downloadZip": "Laai alles af (.zip)",
+    "loadError": "Kon nie die prent laai nie",
+    "saveError": "Kon nie die lêer stoor nie"
   },
   "JsonDiff": {
     "title": "JSON Diff",
diff --git a/apps/desktop-ui/messages/ar.json b/apps/desktop-ui/messages/ar.json
index 4e1ac6d2..8cee710b 100644
--- a/apps/desktop-ui/messages/ar.json
+++ b/apps/desktop-ui/messages/ar.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "جاري تحميل المحرر…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "صورة إلى Base64",
@@ -4890,7 +4889,9 @@
     "copy": "نسخ",
     "headSnippet": "مقتطف HTML head",
     "downloadIco": "تنزيل favicon.ico",
-    "downloadZip": "تنزيل الكل (.zip)"
+    "downloadZip": "تنزيل الكل (.zip)",
+    "loadError": "تعذّر تحميل الصورة",
+    "saveError": "تعذّر حفظ الملف"
   },
   "JsonDiff": {
     "title": "فرق JSON",
diff --git a/apps/desktop-ui/messages/ca.json b/apps/desktop-ui/messages/ca.json
index 0bbbc2fb..d5086e07 100644
--- a/apps/desktop-ui/messages/ca.json
+++ b/apps/desktop-ui/messages/ca.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "S'està carregant l'editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Imatge a Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copia",
     "headSnippet": "Fragment del head HTML",
     "downloadIco": "Descarrega favicon.ico",
-    "downloadZip": "Descarrega-ho tot (.zip)"
+    "downloadZip": "Descarrega-ho tot (.zip)",
+    "loadError": "No s'ha pogut carregar la imatge",
+    "saveError": "No s'ha pogut desar el fitxer"
   },
   "JsonDiff": {
     "title": "Diff de JSON",
diff --git a/apps/desktop-ui/messages/cs.json b/apps/desktop-ui/messages/cs.json
index ae84c5af..1d292750 100644
--- a/apps/desktop-ui/messages/cs.json
+++ b/apps/desktop-ui/messages/cs.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Načítání editoru…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Obrázek do Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopírovat",
     "headSnippet": "Úryvek HTML head",
     "downloadIco": "Stáhnout favicon.ico",
-    "downloadZip": "Stáhnout vše (.zip)"
+    "downloadZip": "Stáhnout vše (.zip)",
+    "loadError": "Obrázek se nepodařilo načíst",
+    "saveError": "Soubor se nepodařilo uložit"
   },
   "JsonDiff": {
     "title": "Porovnání JSON",
diff --git a/apps/desktop-ui/messages/da.json b/apps/desktop-ui/messages/da.json
index c348e15d..fce59853 100644
--- a/apps/desktop-ui/messages/da.json
+++ b/apps/desktop-ui/messages/da.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Indlæser editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Billede til Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopiér",
     "headSnippet": "HTML head-uddrag",
     "downloadIco": "Download favicon.ico",
-    "downloadZip": "Download alle (.zip)"
+    "downloadZip": "Download alle (.zip)",
+    "loadError": "Billedet kunne ikke indlæses",
+    "saveError": "Filen kunne ikke gemmes"
   },
   "JsonDiff": {
     "title": "JSON-diff",
diff --git a/apps/desktop-ui/messages/de.json b/apps/desktop-ui/messages/de.json
index b3af3829..1a4ea30f 100644
--- a/apps/desktop-ui/messages/de.json
+++ b/apps/desktop-ui/messages/de.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Editor wird geladen…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Bild zu Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopieren",
     "headSnippet": "HTML-head-Snippet",
     "downloadIco": "favicon.ico herunterladen",
-    "downloadZip": "Alles herunterladen (.zip)"
+    "downloadZip": "Alles herunterladen (.zip)",
+    "loadError": "Bild konnte nicht geladen werden",
+    "saveError": "Datei konnte nicht gespeichert werden"
   },
   "JsonDiff": {
     "title": "JSON-Diff",
diff --git a/apps/desktop-ui/messages/el.json b/apps/desktop-ui/messages/el.json
index d441276c..d44204f7 100644
--- a/apps/desktop-ui/messages/el.json
+++ b/apps/desktop-ui/messages/el.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Φόρτωση επεξεργαστή…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Εικόνα σε Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Αντιγραφή",
     "headSnippet": "Απόσπασμα HTML head",
     "downloadIco": "Λήψη favicon.ico",
-    "downloadZip": "Λήψη όλων (.zip)"
+    "downloadZip": "Λήψη όλων (.zip)",
+    "loadError": "Αποτυχία φόρτωσης εικόνας",
+    "saveError": "Δεν ήταν δυνατή η αποθήκευση του αρχείου"
   },
   "JsonDiff": {
     "title": "Διαφορές JSON",
diff --git a/apps/desktop-ui/messages/en.json b/apps/desktop-ui/messages/en.json
index a430419d..87f875bc 100644
--- a/apps/desktop-ui/messages/en.json
+++ b/apps/desktop-ui/messages/en.json
@@ -3158,8 +3158,7 @@
       "dart": "Dart",
       "swift": "Swift (Codable)"
     },
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "SecureFiles": {
     "title": "Files",
@@ -4977,7 +4976,9 @@
     "copy": "Copy",
     "headSnippet": "HTML head snippet",
     "downloadIco": "Download favicon.ico",
-    "downloadZip": "Download all (.zip)"
+    "downloadZip": "Download all (.zip)",
+    "loadError": "Failed to load image",
+    "saveError": "Could not save the file"
   },
   "JsonDiff": {
     "title": "JSON Diff",
diff --git a/apps/desktop-ui/messages/es.json b/apps/desktop-ui/messages/es.json
index b5bd3aa9..62ba0686 100644
--- a/apps/desktop-ui/messages/es.json
+++ b/apps/desktop-ui/messages/es.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Cargando el editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Imagen a Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copiar",
     "headSnippet": "Fragmento para el head HTML",
     "downloadIco": "Descargar favicon.ico",
-    "downloadZip": "Descargar todo (.zip)"
+    "downloadZip": "Descargar todo (.zip)",
+    "loadError": "No se pudo cargar la imagen",
+    "saveError": "No se pudo guardar el archivo"
   },
   "JsonDiff": {
     "title": "Diff de JSON",
diff --git a/apps/desktop-ui/messages/fa.json b/apps/desktop-ui/messages/fa.json
index 10b2a386..f70a60f9 100644
--- a/apps/desktop-ui/messages/fa.json
+++ b/apps/desktop-ui/messages/fa.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "در حال بارگذاری ویرایشگر…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "تصویر به Base64",
@@ -4890,7 +4889,9 @@
     "copy": "کپی",
     "headSnippet": "قطعه‌کد HTML head",
     "downloadIco": "دانلود favicon.ico",
-    "downloadZip": "دانلود همه (.zip)"
+    "downloadZip": "دانلود همه (.zip)",
+    "loadError": "بارگذاری تصویر ناموفق بود",
+    "saveError": "ذخیره فایل ممکن نشد"
   },
   "JsonDiff": {
     "title": "تفاوت JSON",
diff --git a/apps/desktop-ui/messages/fr.json b/apps/desktop-ui/messages/fr.json
index e4420437..247c45b5 100644
--- a/apps/desktop-ui/messages/fr.json
+++ b/apps/desktop-ui/messages/fr.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Chargement de l’éditeur…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Image en Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copier",
     "headSnippet": "Extrait pour le head HTML",
     "downloadIco": "Télécharger favicon.ico",
-    "downloadZip": "Tout télécharger (.zip)"
+    "downloadZip": "Tout télécharger (.zip)",
+    "loadError": "Échec du chargement de l'image",
+    "saveError": "Impossible d'enregistrer le fichier"
   },
   "JsonDiff": {
     "title": "Diff JSON",
diff --git a/apps/desktop-ui/messages/id.json b/apps/desktop-ui/messages/id.json
index ba78f61d..c62d54a1 100644
--- a/apps/desktop-ui/messages/id.json
+++ b/apps/desktop-ui/messages/id.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Memuat editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Gambar ke Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Salin",
     "headSnippet": "Cuplikan HTML head",
     "downloadIco": "Unduh favicon.ico",
-    "downloadZip": "Unduh semua (.zip)"
+    "downloadZip": "Unduh semua (.zip)",
+    "loadError": "Gagal memuat gambar",
+    "saveError": "Gagal menyimpan file"
   },
   "JsonDiff": {
     "title": "Diff JSON",
diff --git a/apps/desktop-ui/messages/it.json b/apps/desktop-ui/messages/it.json
index 5cf8185b..d3219720 100644
--- a/apps/desktop-ui/messages/it.json
+++ b/apps/desktop-ui/messages/it.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Caricamento editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Immagine in Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copia",
     "headSnippet": "Snippet per l'head HTML",
     "downloadIco": "Scarica favicon.ico",
-    "downloadZip": "Scarica tutto (.zip)"
+    "downloadZip": "Scarica tutto (.zip)",
+    "loadError": "Impossibile caricare l'immagine",
+    "saveError": "Impossibile salvare il file"
   },
   "JsonDiff": {
     "title": "Diff JSON",
diff --git a/apps/desktop-ui/messages/ja.json b/apps/desktop-ui/messages/ja.json
index 2fe81b64..459b6da4 100644
--- a/apps/desktop-ui/messages/ja.json
+++ b/apps/desktop-ui/messages/ja.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "エディタを読み込み中…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "画像 → Base64",
@@ -4890,7 +4889,9 @@
     "copy": "コピー",
     "headSnippet": "HTML head スニペット",
     "downloadIco": "favicon.ico をダウンロード",
-    "downloadZip": "すべてダウンロード (.zip)"
+    "downloadZip": "すべてダウンロード (.zip)",
+    "loadError": "画像を読み込めませんでした",
+    "saveError": "ファイルを保存できませんでした"
   },
   "JsonDiff": {
     "title": "JSON差分",
diff --git a/apps/desktop-ui/messages/ko.json b/apps/desktop-ui/messages/ko.json
index 69e705ba..35e9e7fc 100644
--- a/apps/desktop-ui/messages/ko.json
+++ b/apps/desktop-ui/messages/ko.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "편집기 로드 중…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "이미지 → Base64",
@@ -4890,7 +4889,9 @@
     "copy": "복사",
     "headSnippet": "HTML head 스니펫",
     "downloadIco": "favicon.ico 다운로드",
-    "downloadZip": "모두 다운로드 (.zip)"
+    "downloadZip": "모두 다운로드 (.zip)",
+    "loadError": "이미지를 불러오지 못했습니다",
+    "saveError": "파일을 저장하지 못했습니다"
   },
   "JsonDiff": {
     "title": "JSON 비교",
diff --git a/apps/desktop-ui/messages/ms.json b/apps/desktop-ui/messages/ms.json
index 86646f8c..243e0198 100644
--- a/apps/desktop-ui/messages/ms.json
+++ b/apps/desktop-ui/messages/ms.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Memuatkan editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Imej ke Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Salin",
     "headSnippet": "Cebisan HTML head",
     "downloadIco": "Muat turun favicon.ico",
-    "downloadZip": "Muat turun semua (.zip)"
+    "downloadZip": "Muat turun semua (.zip)",
+    "loadError": "Gagal memuatkan imej",
+    "saveError": "Gagal menyimpan fail"
   },
   "JsonDiff": {
     "title": "Diff JSON",
diff --git a/apps/desktop-ui/messages/nb.json b/apps/desktop-ui/messages/nb.json
index a958af60..d9b847a5 100644
--- a/apps/desktop-ui/messages/nb.json
+++ b/apps/desktop-ui/messages/nb.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Laster inn redigeringsprogrammet…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Bilde til Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopier",
     "headSnippet": "HTML head-utdrag",
     "downloadIco": "Last ned favicon.ico",
-    "downloadZip": "Last ned alle (.zip)"
+    "downloadZip": "Last ned alle (.zip)",
+    "loadError": "Kunne ikke laste inn bildet",
+    "saveError": "Kunne ikke lagre filen"
   },
   "JsonDiff": {
     "title": "JSON-diff",
diff --git a/apps/desktop-ui/messages/nl.json b/apps/desktop-ui/messages/nl.json
index b93207a8..3d0c89b2 100644
--- a/apps/desktop-ui/messages/nl.json
+++ b/apps/desktop-ui/messages/nl.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Editor laden…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Afbeelding naar Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopiëren",
     "headSnippet": "HTML-head-snippet",
     "downloadIco": "favicon.ico downloaden",
-    "downloadZip": "Alles downloaden (.zip)"
+    "downloadZip": "Alles downloaden (.zip)",
+    "loadError": "Afbeelding kon niet worden geladen",
+    "saveError": "Bestand kon niet worden opgeslagen"
   },
   "JsonDiff": {
     "title": "JSON-diff",
diff --git a/apps/desktop-ui/messages/pl.json b/apps/desktop-ui/messages/pl.json
index bdec4d87..55e68bf8 100644
--- a/apps/desktop-ui/messages/pl.json
+++ b/apps/desktop-ui/messages/pl.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Ładowanie edytora…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Obraz do Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopiuj",
     "headSnippet": "Fragment head HTML",
     "downloadIco": "Pobierz favicon.ico",
-    "downloadZip": "Pobierz wszystko (.zip)"
+    "downloadZip": "Pobierz wszystko (.zip)",
+    "loadError": "Nie udało się wczytać obrazu",
+    "saveError": "Nie udało się zapisać pliku"
   },
   "JsonDiff": {
     "title": "Porównywarka JSON",
diff --git a/apps/desktop-ui/messages/pt-BR.json b/apps/desktop-ui/messages/pt-BR.json
index d0afff29..b83639c0 100644
--- a/apps/desktop-ui/messages/pt-BR.json
+++ b/apps/desktop-ui/messages/pt-BR.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Carregando o editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Imagem para Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copiar",
     "headSnippet": "Trecho do head HTML",
     "downloadIco": "Baixar favicon.ico",
-    "downloadZip": "Baixar tudo (.zip)"
+    "downloadZip": "Baixar tudo (.zip)",
+    "loadError": "Falha ao carregar a imagem",
+    "saveError": "Não foi possível salvar o arquivo"
   },
   "JsonDiff": {
     "title": "Diff de JSON",
diff --git a/apps/desktop-ui/messages/pt.json b/apps/desktop-ui/messages/pt.json
index 58a83485..e0f90103 100644
--- a/apps/desktop-ui/messages/pt.json
+++ b/apps/desktop-ui/messages/pt.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "A carregar o editor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Imagem para Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Copiar",
     "headSnippet": "Fragmento para o head HTML",
     "downloadIco": "Descarregar favicon.ico",
-    "downloadZip": "Descarregar tudo (.zip)"
+    "downloadZip": "Descarregar tudo (.zip)",
+    "loadError": "Falha ao carregar a imagem",
+    "saveError": "Não foi possível guardar o ficheiro"
   },
   "JsonDiff": {
     "title": "Diff de JSON",
diff --git a/apps/desktop-ui/messages/ru.json b/apps/desktop-ui/messages/ru.json
index d7459120..017e2d0b 100644
--- a/apps/desktop-ui/messages/ru.json
+++ b/apps/desktop-ui/messages/ru.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Загрузка редактора…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Изображение в Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Копировать",
     "headSnippet": "Фрагмент для head HTML",
     "downloadIco": "Скачать favicon.ico",
-    "downloadZip": "Скачать всё (.zip)"
+    "downloadZip": "Скачать всё (.zip)",
+    "loadError": "Не удалось загрузить изображение",
+    "saveError": "Не удалось сохранить файл"
   },
   "JsonDiff": {
     "title": "Сравнение JSON",
diff --git a/apps/desktop-ui/messages/sv.json b/apps/desktop-ui/messages/sv.json
index 1753ab49..94a1f23f 100644
--- a/apps/desktop-ui/messages/sv.json
+++ b/apps/desktop-ui/messages/sv.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Läser in redigeraren…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Bild till Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Kopiera",
     "headSnippet": "HTML head-utdrag",
     "downloadIco": "Ladda ner favicon.ico",
-    "downloadZip": "Ladda ner alla (.zip)"
+    "downloadZip": "Ladda ner alla (.zip)",
+    "loadError": "Bilden kunde inte läsas in",
+    "saveError": "Filen kunde inte sparas"
   },
   "JsonDiff": {
     "title": "JSON-diff",
diff --git a/apps/desktop-ui/messages/tr.json b/apps/desktop-ui/messages/tr.json
index a4c0333b..e57c213a 100644
--- a/apps/desktop-ui/messages/tr.json
+++ b/apps/desktop-ui/messages/tr.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Editör yükleniyor…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Görselden Base64'e",
@@ -4890,7 +4889,9 @@
     "copy": "Kopyala",
     "headSnippet": "HTML head parçacığı",
     "downloadIco": "favicon.ico indir",
-    "downloadZip": "Tümünü indir (.zip)"
+    "downloadZip": "Tümünü indir (.zip)",
+    "loadError": "Görsel yüklenemedi",
+    "saveError": "Dosya kaydedilemedi"
   },
   "JsonDiff": {
     "title": "JSON Fark",
diff --git a/apps/desktop-ui/messages/uk.json b/apps/desktop-ui/messages/uk.json
index 2820a96c..c6d59fe8 100644
--- a/apps/desktop-ui/messages/uk.json
+++ b/apps/desktop-ui/messages/uk.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Завантаження редактора…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Зображення в Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Копіювати",
     "headSnippet": "Фрагмент для head HTML",
     "downloadIco": "Завантажити favicon.ico",
-    "downloadZip": "Завантажити все (.zip)"
+    "downloadZip": "Завантажити все (.zip)",
+    "loadError": "Не вдалося завантажити зображення",
+    "saveError": "Не вдалося зберегти файл"
   },
   "JsonDiff": {
     "title": "Порівняння JSON",
diff --git a/apps/desktop-ui/messages/vi.json b/apps/desktop-ui/messages/vi.json
index 344f364c..db91e007 100644
--- a/apps/desktop-ui/messages/vi.json
+++ b/apps/desktop-ui/messages/vi.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "Đang tải trình soạn thảo…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "Ảnh sang Base64",
@@ -4890,7 +4889,9 @@
     "copy": "Sao chép",
     "headSnippet": "Đoạn mã HTML head",
     "downloadIco": "Tải favicon.ico",
-    "downloadZip": "Tải tất cả (.zip)"
+    "downloadZip": "Tải tất cả (.zip)",
+    "loadError": "Không tải được hình ảnh",
+    "saveError": "Không lưu được tệp"
   },
   "JsonDiff": {
     "title": "JSON Diff",
diff --git a/apps/desktop-ui/messages/zh.json b/apps/desktop-ui/messages/zh.json
index 461e2643..f225bb7a 100644
--- a/apps/desktop-ui/messages/zh.json
+++ b/apps/desktop-ui/messages/zh.json
@@ -3426,8 +3426,7 @@
       "swift": "Swift (Codable)"
     },
     "editorLoading": "正在加载编辑器…",
-    "detectedFormats": "Detected formats",
-    "download": "Download"
+    "detectedFormats": "Detected formats"
   },
   "ImageToBase64": {
     "title": "图片转 Base64",
@@ -4890,7 +4889,9 @@
     "copy": "复制",
     "headSnippet": "HTML head 代码片段",
     "downloadIco": "下载 favicon.ico",
-    "downloadZip": "下载全部 (.zip)"
+    "downloadZip": "下载全部 (.zip)",
+    "loadError": "无法加载图片",
+    "saveError": "无法保存文件"
   },
   "JsonDiff": {
     "title": "JSON 对比",
diff --git a/apps/desktop-ui/package.json b/apps/desktop-ui/package.json
index b3f52629..4b3d1e3c 100644
--- a/apps/desktop-ui/package.json
+++ b/apps/desktop-ui/package.json
@@ -73,7 +73,6 @@
     "diff": "^8.0.4",
     "exifr": "^7.1.3",
     "fast-xml-parser": "^5.11.1",
-    "file-saver": "^2.0.5",
     "framer-motion": "^12.43.0",
     "geist": "^1.7.2",
     "gpt-tokenizer": "^4.0.0",
@@ -129,7 +128,6 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.3.6",
     "@next/bundle-analyzer": "^16.3.3",
-    "@types/file-saver": "^2.0.7",
     "@types/jest": "^30.0.0",
     "@types/jmespath": "^0.15.2",
     "@types/js-yaml": "^4.0.9",
diff --git a/apps/desktop-ui/src/app/app/to-do/ExportImportDialog.tsx b/apps/desktop-ui/src/app/app/to-do/ExportImportDialog.tsx
index ed07cdf2..60f74ce6 100644
--- a/apps/desktop-ui/src/app/app/to-do/ExportImportDialog.tsx
+++ b/apps/desktop-ui/src/app/app/to-do/ExportImportDialog.tsx
@@ -16,6 +16,8 @@ import { Project } from "@/app/app/to-do/types/Project";
 import { toast } from "sonner";
 import { useTranslations } from "next-intl";
 import { useStatuses } from "./hooks/useStatuses";
+import { downloadFile } from "@/lib/desktop/save-file";
+import { downloadWorkbook } from "@/lib/csv-excel-json-utils";
 
 interface ExportImportDialogProps {
   open: boolean;
@@ -66,12 +68,7 @@ export default function ExportImportDialog({
     const filteredTasks = getFilteredTasks();
     const dataStr = JSON.stringify(filteredTasks, null, 2);
     const dataBlob = new Blob([dataStr], { type: "application/json" });
-    const url = URL.createObjectURL(dataBlob);
-    const link = document.createElement("a");
-    link.href = url;
-    link.download = `tasks-export-${new Date().toISOString().split("T")[0]}.json`;
-    link.click();
-    URL.revokeObjectURL(url);
+    downloadFile(dataBlob, `tasks-export-${new Date().toISOString().split("T")[0]}.json`);
     toast.success(t("toastExportedJson", { count: filteredTasks.length }));
   };
 
@@ -115,12 +112,7 @@ export default function ExportImportDialog({
     const csvContent = [headers.join(","), ...rows.map((row) => row.join(","))].join("\n");
 
     const blob = new Blob([csvContent], { type: "text/csv;charset=utf-8;" });
-    const url = URL.createObjectURL(blob);
-    const link = document.createElement("a");
-    link.href = url;
-    link.download = `tasks-export-${new Date().toISOString().split("T")[0]}.csv`;
-    link.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, `tasks-export-${new Date().toISOString().split("T")[0]}.csv`);
     toast.success(t("toastExportedCsv", { count: filteredTasks.length }));
   };
 
@@ -153,7 +145,7 @@ export default function ExportImportDialog({
       const workbook = XLSX.utils.book_new();
       XLSX.utils.book_append_sheet(workbook, worksheet, "Tasks");
 
-      XLSX.writeFile(workbook, `tasks-export-${new Date().toISOString().split("T")[0]}.xlsx`);
+      await downloadWorkbook(workbook, `tasks-export-${new Date().toISOString().split("T")[0]}.xlsx`);
       toast.success(t("toastExportedExcel", { count: filteredTasks.length }));
     } catch (error) {
       console.error("Excel export error:", error);
diff --git a/apps/desktop-ui/src/components/api-client/response-panel.tsx b/apps/desktop-ui/src/components/api-client/response-panel.tsx
index 302407d3..aa4cc8f4 100644
--- a/apps/desktop-ui/src/components/api-client/response-panel.tsx
+++ b/apps/desktop-ui/src/components/api-client/response-panel.tsx
@@ -25,6 +25,7 @@ import { cn } from "@/lib/utils"
 import type { editor } from "monaco-editor"
 import { truncateBody } from "./truncate-body"
 import { ResponsePanelSkeleton } from "./skeletons"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 const MAX_INLINE_BYTES = 2 * 1024 * 1024 // 2MB
 
@@ -203,14 +204,7 @@ function ResponsePanelImpl({ response, isLoading, scriptResults, onSaveExample }
                 type: contentType || (isHtmlResponse ? "text/html" : "text/plain"),
             })
         }
-        const url = URL.createObjectURL(blob)
-        const a = document.createElement("a")
-        a.href = url
-        a.download = `response-${Date.now()}.${getLanguage()}`
-        document.body.appendChild(a)
-        a.click()
-        document.body.removeChild(a)
-        URL.revokeObjectURL(url)
+        downloadFile(blob, `response-${Date.now()}.${getLanguage()}`)
     }
 
     const renderPreview = () => {
diff --git a/apps/desktop-ui/src/components/base64/base64-layout.tsx b/apps/desktop-ui/src/components/base64/base64-layout.tsx
index c88fc850..b4c27d5f 100644
--- a/apps/desktop-ui/src/components/base64/base64-layout.tsx
+++ b/apps/desktop-ui/src/components/base64/base64-layout.tsx
@@ -20,6 +20,7 @@ import { SendToMenu } from '@/components/ui/send-to-menu';
 import { IconTransform } from '@tabler/icons-react';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 type Mode = 'encode' | 'decode';
 
@@ -112,12 +113,7 @@ export function Base64Layout() {
   const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = mode === 'encode' ? t('download.encodedFilename') : t('download.decodedFilename');
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, mode === 'encode' ? t('download.encodedFilename') : t('download.decodedFilename'));
   };
 
   const handleDrop = (e: React.DragEvent) => {
diff --git a/apps/desktop-ui/src/components/bookmarks/bookmarks-manager.tsx b/apps/desktop-ui/src/components/bookmarks/bookmarks-manager.tsx
index 1a515766..840a49a4 100644
--- a/apps/desktop-ui/src/components/bookmarks/bookmarks-manager.tsx
+++ b/apps/desktop-ui/src/components/bookmarks/bookmarks-manager.tsx
@@ -40,6 +40,7 @@ import {
 import { exportBookmarksToHTML, exportBookmarksToJSON } from "@/lib/bookmark-parser"
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select"
 import { Skeleton } from "@/components/ui/skeleton"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 /** Lives inside ToolSidebarLayout so it can dismiss the mobile sheet on pick. */
 function FolderPanel({ onSelectFolder }: { onSelectFolder: (id: string | null) => void }) {
@@ -85,23 +86,13 @@ export default function BookmarksManager() {
     const handleExportHTML = useCallback(() => {
         const html = exportBookmarksToHTML(bookmarks, folders)
         const blob = new Blob([html], { type: 'text/html' })
-        const url = URL.createObjectURL(blob)
-        const a = document.createElement('a')
-        a.href = url
-        a.download = 'bookmarks.html'
-        a.click()
-        URL.revokeObjectURL(url)
+        downloadFile(blob, 'bookmarks.html')
     }, [bookmarks, folders])
 
     const handleExportJSON = useCallback(() => {
         const json = exportBookmarksToJSON(bookmarks, folders)
         const blob = new Blob([json], { type: 'application/json' })
-        const url = URL.createObjectURL(blob)
-        const a = document.createElement('a')
-        a.href = url
-        a.download = 'bookmarks.json'
-        a.click()
-        URL.revokeObjectURL(url)
+        downloadFile(blob, 'bookmarks.json')
     }, [bookmarks, folders])
 
     const handleEditBookmark = useCallback((id: string) => {
diff --git a/apps/desktop-ui/src/components/code-screenshot/code-screenshot-layout.tsx b/apps/desktop-ui/src/components/code-screenshot/code-screenshot-layout.tsx
index 4ee111a9..4016154a 100644
--- a/apps/desktop-ui/src/components/code-screenshot/code-screenshot-layout.tsx
+++ b/apps/desktop-ui/src/components/code-screenshot/code-screenshot-layout.tsx
@@ -2,8 +2,7 @@
 
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { useTranslations } from 'next-intl'
-import { toBlob, toPng } from 'html-to-image'
-import { saveAs } from 'file-saver'
+import { toBlob } from 'html-to-image'
 import { toast } from 'sonner'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
@@ -23,6 +22,7 @@ import { IconPhotoCode } from '@tabler/icons-react'
 import { ToolShell } from '@/components/tools/tool-shell'
 import { IOPanel, ToolTextArea } from '@/components/tools/io-panel'
 import { BACKGROUNDS, LANGUAGES, canFormat, formatCode, highlightCode } from '@/lib/code-screenshot'
+import { downloadFile } from '@/lib/desktop/save-file'
 
 /**
  * highlight.js theme scoped under .cshot-code so it can never bleed into the
@@ -124,8 +124,9 @@ export function CodeScreenshotLayout() {
     if (!node) return
     setExporting(true)
     try {
-      const dataUrl = await toPng(node, { pixelRatio: scale, cacheBust: true })
-      saveAs(dataUrl, 'code-screenshot.png')
+      const blob = await toBlob(node, { pixelRatio: scale, cacheBust: true })
+      if (!blob) throw new Error('no blob')
+      downloadFile(blob, 'code-screenshot.png')
     } catch {
       toast.error(t('exportFailed'))
     } finally {
diff --git a/apps/desktop-ui/src/components/css-gradient-builder/gradient-layout.tsx b/apps/desktop-ui/src/components/css-gradient-builder/gradient-layout.tsx
index 2c316325..679980d8 100644
--- a/apps/desktop-ui/src/components/css-gradient-builder/gradient-layout.tsx
+++ b/apps/desktop-ui/src/components/css-gradient-builder/gradient-layout.tsx
@@ -19,6 +19,7 @@ import { IconColorSwatch } from '@tabler/icons-react';
 import { cn } from '@/lib/utils';
 import { ScrollArea, ScrollBar } from '@/components/ui/scroll-area';
 import { ToolShell } from '@/components/tools/tool-shell';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 type GradientType = 'linear' | 'radial' | 'conic';
 
@@ -94,17 +95,12 @@ export function GradientLayout() {
       if (ctx) {
         ctx.drawImage(img, 0, 0);
         try {
-          const png = canvas.toDataURL('image/png');
-          const a = document.createElement('a');
-          a.href = png;
-          a.download = 'gradient-wallpaper.png';
-          a.click();
+          canvas.toBlob((png) => {
+            downloadFile(png ?? blob, png ? 'gradient-wallpaper.png' : 'gradient-wallpaper.svg');
+          }, 'image/png');
         } catch {
           // If tainted canvas due to strict mode, download SVG directly as fallback
-          const a = document.createElement('a');
-          a.href = url;
-          a.download = 'gradient-wallpaper.svg';
-          a.click();
+          downloadFile(blob, 'gradient-wallpaper.svg');
         }
       }
       URL.revokeObjectURL(url);
diff --git a/apps/desktop-ui/src/components/csv-excel-json/csv-excel-json-tool.tsx b/apps/desktop-ui/src/components/csv-excel-json/csv-excel-json-tool.tsx
index 509b4dd7..c4b30863 100644
--- a/apps/desktop-ui/src/components/csv-excel-json/csv-excel-json-tool.tsx
+++ b/apps/desktop-ui/src/components/csv-excel-json/csv-excel-json-tool.tsx
@@ -19,13 +19,13 @@ import { ToolShell } from "@/components/tools/tool-shell";
 import { IOPanel, ToolTextArea } from "@/components/tools/io-panel";
 import { useToolUsage } from "@/hooks/use-tool-usage";
 import { cn } from "@/lib/utils";
+import { downloadFile } from "@/lib/desktop/save-file";
 import {
   csvTextToRows,
   excelBufferToRows,
   parseJsonToRows,
   rowsToCSV,
   rowsToXlsxFile,
-  triggerDownload,
 } from "@/lib/csv-excel-json-utils";
 
 const SAMPLE_JSON = `[
@@ -109,10 +109,7 @@ export function CsvExcelJsonTool() {
     try {
       const rows = parseJsonToRows(jsonText);
       const csv = rowsToCSV(rows);
-      triggerDownload(
-        new Blob([csv], { type: "text/csv;charset=utf-8" }),
-        t("filenames.csv")
-      );
+      downloadFile(csv, t("filenames.csv"), "text/csv;charset=utf-8");
       toast.success(t("toastExportedCsv"));
     } catch (e) {
       const msg = e instanceof Error ? e.message : t("errors.exportFailed");
diff --git a/apps/desktop-ui/src/components/data-explorer/mongodb/export-dialog.tsx b/apps/desktop-ui/src/components/data-explorer/mongodb/export-dialog.tsx
index 83c4c26a..15448d5e 100644
--- a/apps/desktop-ui/src/components/data-explorer/mongodb/export-dialog.tsx
+++ b/apps/desktop-ui/src/components/data-explorer/mongodb/export-dialog.tsx
@@ -10,6 +10,8 @@ import { ScrollArea } from "@/components/ui/scroll-area";
 import { IconDownload } from "@tabler/icons-react";
 import { toast } from "sonner";
 import { useTranslations } from "next-intl";
+import { downloadFile } from "@/lib/desktop/save-file";
+import { downloadWorkbook } from "@/lib/csv-excel-json-utils";
 
 interface ExportDialogProps {
     open: boolean;
@@ -57,12 +59,7 @@ export function ExportDialog({ open, onOpenChange, documents, fields }: ExportDi
                     return newDoc;
                 });
                 const blob = new Blob([JSON.stringify(rows, null, 2)], { type: "application/json" });
-                const url = URL.createObjectURL(blob);
-                const a = document.createElement("a");
-                a.href = url;
-                a.download = filename;
-                a.click();
-                URL.revokeObjectURL(url);
+                downloadFile(blob, filename);
                 toast.success(t("success", { filename }));
                 onOpenChange(false);
                 return;
@@ -88,11 +85,11 @@ export function ExportDialog({ open, onOpenChange, documents, fields }: ExportDi
             XLSX.utils.book_append_sheet(workbook, worksheet, t("sheetName"));
 
             if (format === "csv") {
-                XLSX.writeFile(workbook, filename, { bookType: "csv" });
+                await downloadWorkbook(workbook, filename, "csv");
             } else if (format === "tsv") {
-                XLSX.writeFile(workbook, filename, { bookType: "txt" }); // txt = tab-separated
+                await downloadWorkbook(workbook, filename, "txt"); // txt = tab-separated
             } else {
-                XLSX.writeFile(workbook, filename);
+                await downloadWorkbook(workbook, filename);
             }
 
             toast.success(t("success", { filename }));
diff --git a/apps/desktop-ui/src/components/data-explorer/mongodb/gridfs-browser.tsx b/apps/desktop-ui/src/components/data-explorer/mongodb/gridfs-browser.tsx
index e5ae2e01..6dba6fce 100644
--- a/apps/desktop-ui/src/components/data-explorer/mongodb/gridfs-browser.tsx
+++ b/apps/desktop-ui/src/components/data-explorer/mongodb/gridfs-browser.tsx
@@ -7,6 +7,7 @@ import { Button } from "@/components/ui/button";
 import { IconRefresh, IconUpload, IconDownload, IconTrash, IconLoader2, IconFile } from "@tabler/icons-react";
 import { toast } from "sonner";
 import { cn } from "@/lib/utils";
+import { downloadFile } from "@/lib/desktop/save-file";
 
 interface GridFsFile {
     id: unknown;
@@ -102,12 +103,7 @@ export function GridFsBrowser({
             const data = await res.json();
             if (!res.ok) throw new Error(data.error);
             const bytes = Uint8Array.from(atob(data.data), (c) => c.charCodeAt(0));
-            const url = URL.createObjectURL(new Blob([bytes]));
-            const a = document.createElement("a");
-            a.href = url;
-            a.download = f.filename || "gridfs-file";
-            a.click();
-            URL.revokeObjectURL(url);
+            downloadFile(new Blob([bytes]), f.filename || "gridfs-file");
         } catch (e: any) {
             toast.error(e.message || "Download failed");
         } finally {
diff --git a/apps/desktop-ui/src/components/data-explorer/mongodb/schema-view.tsx b/apps/desktop-ui/src/components/data-explorer/mongodb/schema-view.tsx
index 673cabc9..ae6c570d 100644
--- a/apps/desktop-ui/src/components/data-explorer/mongodb/schema-view.tsx
+++ b/apps/desktop-ui/src/components/data-explorer/mongodb/schema-view.tsx
@@ -9,6 +9,7 @@ import { IconRefresh, IconShieldCheck, IconChevronRight, IconDownload } from "@t
 import { useTranslations } from "next-intl";
 import { cn } from "@/lib/utils";
 import { generateSchemaExport, SchemaExportFormat } from "@/lib/nosql-schema-export";
+import { downloadFile } from "@/lib/desktop/save-file";
 
 export type SampleMode = "random" | "first" | "last" | "all";
 export interface SchemaLoadOptions { sampleMode: SampleMode; sampleSize: number }
@@ -88,12 +89,7 @@ export function SchemaView({
 
     const exportSchema = (format: SchemaExportFormat) => {
         const { content, ext, mime } = generateSchemaExport(format, data!.fields, collectionName);
-        const url = URL.createObjectURL(new Blob([content], { type: mime }));
-        const a = document.createElement("a");
-        a.href = url;
-        a.download = `${collectionName}.${ext}`;
-        a.click();
-        URL.revokeObjectURL(url);
+        downloadFile(new Blob([content], { type: mime }), `${collectionName}.${ext}`);
     };
 
     const validator = data.validator && typeof data.validator === "object" ? data.validator : null;
diff --git a/apps/desktop-ui/src/components/data-explorer/redis/bulk-export-dialog.tsx b/apps/desktop-ui/src/components/data-explorer/redis/bulk-export-dialog.tsx
index 8a66b6ec..83055849 100644
--- a/apps/desktop-ui/src/components/data-explorer/redis/bulk-export-dialog.tsx
+++ b/apps/desktop-ui/src/components/data-explorer/redis/bulk-export-dialog.tsx
@@ -14,6 +14,7 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { toast } from "sonner";
 import type { ExportedKey } from "./bulk-types";
+import { downloadFile } from "@/lib/desktop/save-file";
 
 export function BulkExportDialog({
     open,
@@ -41,12 +42,7 @@ export function BulkExportDialog({
             const body = await res.json() as { keys?: ExportedKey[]; count?: number; truncated?: boolean; error?: string };
             if (body.error) throw new Error(body.error);
             const blob = new Blob([JSON.stringify(body, null, 2)], { type: "application/json" });
-            const url = URL.createObjectURL(blob);
-            const a = document.createElement("a");
-            a.href = url;
-            a.download = `redis-export-db${db}-${Date.now()}.json`;
-            a.click();
-            URL.revokeObjectURL(url);
+            downloadFile(blob, `redis-export-db${db}-${Date.now()}.json`);
             toast.success(`Exported ${body.count ?? 0} key(s)${body.truncated ? " (truncated)" : ""}`);
             onOpenChange(false);
         } catch (err) {
diff --git a/apps/desktop-ui/src/components/data-explorer/sql/results-table.tsx b/apps/desktop-ui/src/components/data-explorer/sql/results-table.tsx
index 3b1dd0eb..01ee9fd4 100644
--- a/apps/desktop-ui/src/components/data-explorer/sql/results-table.tsx
+++ b/apps/desktop-ui/src/components/data-explorer/sql/results-table.tsx
@@ -11,6 +11,7 @@ import { useTranslations } from "next-intl";
 import { QueryResult, SchemaInfo } from "./types";
 import type { AnySqlConfig } from "@/lib/data-explorer/sql-api";
 import { sqlBody } from "@/lib/sql-request";
+import { downloadFile } from "@/lib/desktop/save-file";
 
 /**
  * A BLOB the server could not decode as text. Rust sends hex plus the true
@@ -179,12 +180,7 @@ export function ResultsTable({ result, editable }: ResultsTableProps) {
         );
         const csv = [header, ...rows].join("\n");
         const blob = new Blob([csv], { type: "text/csv" });
-        const url = URL.createObjectURL(blob);
-        const a = document.createElement("a");
-        a.href = url;
-        a.download = "query-results.csv";
-        a.click();
-        URL.revokeObjectURL(url);
+        downloadFile(blob, "query-results.csv");
     };
 
     const formatCell = (value: unknown): string => {
diff --git a/apps/desktop-ui/src/components/docker-compose-generator/docker-compose-generator-layout.tsx b/apps/desktop-ui/src/components/docker-compose-generator/docker-compose-generator-layout.tsx
index 8e87ec8a..d4e18b18 100644
--- a/apps/desktop-ui/src/components/docker-compose-generator/docker-compose-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/docker-compose-generator/docker-compose-generator-layout.tsx
@@ -19,6 +19,7 @@ import { IconBrandDocker } from '@tabler/icons-react'
 import { CopyTextButton } from '@/components/tools/copy-text-button'
 import { ToolShell } from '@/components/tools/tool-shell'
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel'
+import { downloadFile } from '@/lib/desktop/save-file'
 
 const PRESETS: { id: string; services: string[] }[] = [
   { id: 'stackWeb', services: ['postgres', 'redis', 'nginx'] },
@@ -96,12 +97,7 @@ export function DockerComposeGeneratorLayout() {
   const downloadYaml = () => {
     if (!yaml || selectedList.length === 0) return
     const blob = new Blob([yaml], { type: 'text/yaml;charset=utf-8' })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = 'docker-compose.yml'
-    a.click()
-    URL.revokeObjectURL(url)
+    downloadFile(blob, 'docker-compose.yml')
   }
 
   return (
diff --git a/apps/desktop-ui/src/components/email-validator/email-validator.tsx b/apps/desktop-ui/src/components/email-validator/email-validator.tsx
index 8a32960f..ac95ea85 100644
--- a/apps/desktop-ui/src/components/email-validator/email-validator.tsx
+++ b/apps/desktop-ui/src/components/email-validator/email-validator.tsx
@@ -44,6 +44,8 @@ import { motion } from "framer-motion";
 import { useCopyToClipboard } from "@/hooks/use-copy-to-clipboard";
 import { useTranslations } from "next-intl";
 import { validateEmail, validateEmails, type EmailValidationResult } from "@/lib/email-validator";
+import { downloadFile } from "@/lib/desktop/save-file";
+import { downloadWorkbook } from "@/lib/csv-excel-json-utils";
 
 type EmailValidation = EmailValidationResult;
 type BulkResult = EmailValidationResult;
@@ -275,7 +277,7 @@ export function EmailValidator() {
         const ws = XLSX.utils.json_to_sheet(sheetData);
         const wb = XLSX.utils.book_new();
         XLSX.utils.book_append_sheet(wb, ws, validOnly ? t("sheets.validEmails") : t("sheets.results"));
-        XLSX.writeFile(wb, validOnly ? "valid_emails.xlsx" : "email_validation_results.xlsx");
+        await downloadWorkbook(wb, validOnly ? "valid_emails.xlsx" : "email_validation_results.xlsx");
 
         toast.success(t("toasts.exportSuccessTitle"), {
             description: validOnly
@@ -331,14 +333,7 @@ export function EmailValidator() {
 
         const csvContent = csvRows.join("\n");
         const blob = new Blob([csvContent], { type: "text/csv;charset=utf-8;" });
-        const url = URL.createObjectURL(blob);
-        const link = document.createElement("a");
-        link.href = url;
-        link.download = validOnly ? "valid_emails.csv" : "email_validation_results.csv";
-        document.body.appendChild(link);
-        link.click();
-        document.body.removeChild(link);
-        URL.revokeObjectURL(url);
+        downloadFile(blob, validOnly ? "valid_emails.csv" : "email_validation_results.csv");
 
         toast.success(t("toasts.exportSuccessTitle"), {
             description: validOnly
@@ -353,7 +348,7 @@ export function EmailValidator() {
         const ws = XLSX.utils.json_to_sheet(data);
         const wb = XLSX.utils.book_new();
         XLSX.utils.book_append_sheet(wb, ws, t("sheets.template"));
-        XLSX.writeFile(wb, "email_validation_template.xlsx");
+        await downloadWorkbook(wb, "email_validation_template.xlsx");
     };
 
     const getStatusColor = (status: string) => {
diff --git a/apps/desktop-ui/src/components/exif-viewer/exif-viewer-layout.tsx b/apps/desktop-ui/src/components/exif-viewer/exif-viewer-layout.tsx
index 9511b994..c9170ac0 100644
--- a/apps/desktop-ui/src/components/exif-viewer/exif-viewer-layout.tsx
+++ b/apps/desktop-ui/src/components/exif-viewer/exif-viewer-layout.tsx
@@ -3,7 +3,6 @@
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { useTranslations } from 'next-intl'
 import exifr from 'exifr'
-import { saveAs } from 'file-saver'
 import { toast } from 'sonner'
 import { useCopyToClipboard } from '@/hooks/use-copy-to-clipboard'
 import { Badge } from '@/components/ui/badge'
@@ -34,6 +33,7 @@ import {
 import { IconPhotoSearch } from '@tabler/icons-react'
 import { ToolShell } from '@/components/tools/tool-shell'
 import { IOPanel } from '@/components/tools/io-panel'
+import { downloadFile } from '@/lib/desktop/save-file'
 import {
   decimalToDms,
   formatBytes,
@@ -482,7 +482,7 @@ export function ExifViewerLayout() {
                   <span className="text-muted-foreground">{t('remove.after')}:</span>{' '}
                   <span className="font-mono text-xs">{formatBytes(cleaned.blob.size)}</span>
                 </div>
-                <Button size="sm" variant="secondary" onClick={() => saveAs(cleaned.blob, cleaned.name)}>
+                <Button size="sm" variant="secondary" onClick={() => downloadFile(cleaned.blob, cleaned.name)}>
                   <Download className="mr-1.5 h-4 w-4" />
                   {t('remove.download')}
                 </Button>
diff --git a/apps/desktop-ui/src/components/favicon-generator/favicon-generator-layout.tsx b/apps/desktop-ui/src/components/favicon-generator/favicon-generator-layout.tsx
index b6eb7286..f6aa7c86 100644
--- a/apps/desktop-ui/src/components/favicon-generator/favicon-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/favicon-generator/favicon-generator-layout.tsx
@@ -3,7 +3,6 @@
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { useTranslations } from 'next-intl'
 import JSZip from 'jszip'
-import { saveAs } from 'file-saver'
 import { toast } from 'sonner'
 import { useCopyToClipboard } from '@/hooks/use-copy-to-clipboard'
 import { Button } from '@/components/ui/button'
@@ -15,6 +14,7 @@ import { ToggleGroup, ToggleGroupItem } from '@/components/ui/toggle-group'
 import { Check, Copy, Download, Package, Trash2, Upload } from 'lucide-react'
 import { IconFavicon } from '@tabler/icons-react'
 import { ToolShell } from '@/components/tools/tool-shell'
+import { saveFile } from '@/lib/desktop/save-file'
 import {
   ICON_SIZES,
   ICO_SIZES,
@@ -130,11 +130,11 @@ export function FaviconGeneratorLayout() {
       URL.revokeObjectURL(url)
     }
     img.onerror = () => {
-      toast.error('Failed to load image')
+      toast.error(t('loadError'))
       URL.revokeObjectURL(url)
     }
     img.src = url
-  }, [])
+  }, [t])
 
   const onDrop = useCallback(
     (e: React.DragEvent) => {
@@ -146,38 +146,48 @@ export function FaviconGeneratorLayout() {
     [loadFile],
   )
 
-  const getIcon = (size: number, maskable = false) =>
-    icons.find((i) => i.size === size && i.maskable === maskable)
-
-  const downloadIco = useCallback(() => {
-    const images = ICO_SIZES.map((size) => {
-      const icon = getIcon(size)
-      return { size, png: icon!.bytes }
-    })
-    if (images.some((i) => !i.png)) return
-    const ico = buildIco(images)
-    saveAs(new Blob([ico as BlobPart], { type: 'image/x-icon' }), 'favicon.ico')
-    // eslint-disable-next-line react-hooks/exhaustive-deps
+  /** ICO payload for the current icons, or null while a size is still missing. */
+  const buildIcoBytes = useCallback(() => {
+    const images = ICO_SIZES.map((size) => icons.find((i) => i.size === size && !i.maskable))
+    if (images.some((icon) => !icon)) return null
+    return buildIco(images.map((icon) => ({ size: icon!.size, png: icon!.bytes })))
   }, [icons])
 
-  const downloadPng = (icon: RenderedIcon) => {
-    saveAs(new Blob([icon.bytes as BlobPart], { type: 'image/png' }), pngFileName(icon.size, icon.maskable))
+  const downloadIco = useCallback(async () => {
+    const ico = buildIcoBytes()
+    if (!ico) return
+    try {
+      await saveFile(ico, 'favicon.ico', 'image/x-icon')
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : t('saveError'))
+    }
+  }, [buildIcoBytes, t])
+
+  const downloadPng = async (icon: RenderedIcon) => {
+    try {
+      await saveFile(icon.bytes, pngFileName(icon.size, icon.maskable), 'image/png')
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : t('saveError'))
+    }
   }
 
   const downloadZip = useCallback(async () => {
-    if (icons.length === 0) return
-    const zip = new JSZip()
-    const icoImages = ICO_SIZES.map((size) => ({ size, png: getIcon(size)!.bytes }))
-    zip.file('favicon.ico', buildIco(icoImages))
-    for (const icon of icons) {
-      zip.file(pngFileName(icon.size, icon.maskable), icon.bytes)
+    const ico = buildIcoBytes()
+    if (!ico) return
+    try {
+      const zip = new JSZip()
+      zip.file('favicon.ico', ico)
+      for (const icon of icons) {
+        zip.file(pngFileName(icon.size, icon.maskable), icon.bytes)
+      }
+      zip.file('site.webmanifest', manifestSnippet)
+      zip.file('head-snippet.html', headSnippet)
+      const bytes = await zip.generateAsync({ type: 'uint8array' })
+      await saveFile(bytes, 'favicons.zip', 'application/zip')
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : t('saveError'))
     }
-    zip.file('site.webmanifest', manifestSnippet)
-    zip.file('head-snippet.html', headSnippet)
-    const blob = await zip.generateAsync({ type: 'blob' })
-    saveAs(blob, 'favicons.zip')
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [icons, manifestSnippet, headSnippet])
+  }, [buildIcoBytes, icons, manifestSnippet, headSnippet, t])
 
   const copySnippet = (key: string, text: string) => {
     void copyToClipboard(text, { silent: true })
@@ -318,7 +328,7 @@ export function FaviconGeneratorLayout() {
           </div>
 
           <div className="mt-auto flex flex-col gap-2">
-            <Button size="sm" onClick={downloadIco}>
+            <Button size="sm" onClick={() => void downloadIco()}>
               <Download className="mr-1.5 h-4 w-4" />
               {t('downloadIco')}
             </Button>
diff --git a/apps/desktop-ui/src/components/gitignore-generator/gitignore-layout.tsx b/apps/desktop-ui/src/components/gitignore-generator/gitignore-layout.tsx
index 630aa1b8..b334c51c 100644
--- a/apps/desktop-ui/src/components/gitignore-generator/gitignore-layout.tsx
+++ b/apps/desktop-ui/src/components/gitignore-generator/gitignore-layout.tsx
@@ -17,6 +17,7 @@ import { CopyTextButton } from '@/components/tools/copy-text-button';
 import { ToolErrorBanner } from '@/components/tools/tool-error-banner';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 export function GitignoreLayout() {
   const t = useTranslations('GitignoreGenerator');
@@ -90,15 +91,10 @@ export function GitignoreLayout() {
     void copyToClipboard(output, { silent: true });
   };
 
-  const downloadFile = () => {
+  const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: 'text/plain;charset=utf-8' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = '.gitignore';
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, '.gitignore');
   };
 
   const toggleStack = (tag: string) => {
@@ -231,7 +227,7 @@ export function GitignoreLayout() {
           }
           actions={
             <>
-              <Button type="button" variant="ghost" size="sm" onClick={downloadFile} disabled={!output || loadingOutput} className="h-7 text-xs gap-1.5 px-2">
+              <Button type="button" variant="ghost" size="sm" onClick={handleDownload} disabled={!output || loadingOutput} className="h-7 text-xs gap-1.5 px-2">
                 <Download className="h-3.5 w-3.5" />
                 <span className="hidden sm:inline">{t('download')}</span>
               </Button>
diff --git a/apps/desktop-ui/src/components/image-compressor/image-compressor-layout.tsx b/apps/desktop-ui/src/components/image-compressor/image-compressor-layout.tsx
index 266e41e7..485bce24 100644
--- a/apps/desktop-ui/src/components/image-compressor/image-compressor-layout.tsx
+++ b/apps/desktop-ui/src/components/image-compressor/image-compressor-layout.tsx
@@ -26,6 +26,7 @@ import { cn } from '@/lib/utils';
 import { useDebouncedCallback } from 'use-debounce';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { ToolPanels, IOPanel } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 const MAX_FILE_BYTES = 20 * 1024 * 1024;
 const MAX_CANVAS_EDGE = 8192;
@@ -237,11 +238,8 @@ export function ImageCompressorLayout() {
   };
 
   const handleDownload = () => {
-    if (!compressedBlob || !compressedUrl) return;
-    const a = document.createElement('a');
-    a.href = compressedUrl;
-    a.download = `${t('downloadFilename')}.${extForMime(outputMime)}`;
-    a.click();
+    if (!compressedBlob) return;
+    downloadFile(compressedBlob, `${t('downloadFilename')}.${extForMime(outputMime)}`);
   };
 
   const savings =
diff --git a/apps/desktop-ui/src/components/image-to-base64/image-to-base64-layout.tsx b/apps/desktop-ui/src/components/image-to-base64/image-to-base64-layout.tsx
index c877b43e..b750d818 100644
--- a/apps/desktop-ui/src/components/image-to-base64/image-to-base64-layout.tsx
+++ b/apps/desktop-ui/src/components/image-to-base64/image-to-base64-layout.tsx
@@ -18,6 +18,7 @@ import { useTranslations } from 'next-intl';
 import { IconPhoto } from '@tabler/icons-react';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 type Mode = 'dataUri' | 'rawString';
 
@@ -68,12 +69,7 @@ export function ImageToBase64Layout() {
     const textToDownload = mode === 'rawString' ? output.replace(/^data:image\/[a-z]+;base64,/, '') : output;
     if (!textToDownload) return;
     const blob = new Blob([textToDownload], { type: 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = t('download.filename');
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, t('download.filename'));
   };
 
   const handleDrop = (e: React.DragEvent) => {
diff --git a/apps/desktop-ui/src/components/json-schema-generator/json-schema-generator-layout.tsx b/apps/desktop-ui/src/components/json-schema-generator/json-schema-generator-layout.tsx
index 3ebef174..fe88ccc4 100644
--- a/apps/desktop-ui/src/components/json-schema-generator/json-schema-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/json-schema-generator/json-schema-generator-layout.tsx
@@ -4,7 +4,7 @@ import { useCallback, useMemo, useState } from 'react';
 import { useCopyToClipboard } from '@/hooks/use-copy-to-clipboard';
 import { useIsMobile } from '@/components/hooks/use-mobile';
 import { useTranslations } from 'next-intl';
-import { AlertCircle, Check, Copy, Download, Trash2 } from 'lucide-react';
+import { AlertCircle, Check, Copy, Trash2 } from 'lucide-react';
 import { IconBraces } from '@tabler/icons-react';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { IOPanel } from '@/components/tools/io-panel';
@@ -20,7 +20,6 @@ import {
 } from '@/components/ui/select';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { cn } from '@/lib/utils';
-import { triggerDownload } from '@/lib/csv-excel-json-utils';
 import { highlightSchemaOutput } from '@/lib/hljs-json-schema-output';
 import {
   collectFormats,
@@ -45,18 +44,6 @@ const defaultSample = `{
   "scores": [9.5, 8.0]
 }`;
 
-const FILE_EXT: Record<OutputLanguage, string> = {
-  jsonSchema: 'json',
-  python: 'py',
-  typescript: 'ts',
-  go: 'go',
-  rust: 'rs',
-  java: 'java',
-  csharp: 'cs',
-  dart: 'dart',
-  swift: 'swift',
-};
-
 export function JsonSchemaGeneratorLayout() {
   const t = useTranslations('JsonSchemaGenerator');
   const isMobile = useIsMobile();
@@ -97,14 +84,6 @@ export function JsonSchemaGeneratorLayout() {
     });
   }, [output, t, copyToClipboard]);
 
-  const handleDownload = useCallback(() => {
-    if (!output || error) return;
-    const ext = FILE_EXT[language];
-    const filename = language === 'jsonSchema' ? 'schema.json' : `generated.${ext}`;
-    const mime = language === 'jsonSchema' ? 'application/json' : 'text/plain';
-    triggerDownload(new Blob([output], { type: `${mime};charset=utf-8` }), filename);
-  }, [output, error, language]);
-
   const handleClear = () => {
     setInput('');
   };
@@ -141,10 +120,6 @@ export function JsonSchemaGeneratorLayout() {
           )}
           {t('copy')}
         </Button>
-        <Button variant="outline" size="sm" onClick={handleDownload} disabled={!output || !!error}>
-          <Download className="mr-1.5 h-3.5 w-3.5" />
-          {t('download')}
-        </Button>
       </div>
     </div>
   );
diff --git a/apps/desktop-ui/src/components/json-visualizer/graph-canvas.tsx b/apps/desktop-ui/src/components/json-visualizer/graph-canvas.tsx
index c99eb40b..05726f72 100644
--- a/apps/desktop-ui/src/components/json-visualizer/graph-canvas.tsx
+++ b/apps/desktop-ui/src/components/json-visualizer/graph-canvas.tsx
@@ -9,7 +9,6 @@ import React, {
   useRef,
   useState,
 } from 'react'
-import { saveAs } from 'file-saver'
 import {
   layoutGraph,
   NODE_STYLE,
@@ -18,6 +17,7 @@ import {
   type JsonGraph,
   type LaidOutNode,
 } from '@/lib/json-visualizer'
+import { downloadFile } from '@/lib/desktop/save-file'
 
 const TYPE_COLORS: Record<string, string> = {
   string: '#10b981',
@@ -123,11 +123,11 @@ export const GraphCanvas = forwardRef<GraphCanvasHandle, GraphCanvasProps>(funct
     if (!svg || !content) return
     const serialized = serializeGraphSvg(svg, content, l)
     if (format === 'svg') {
-      saveAs(new Blob([serialized], { type: 'image/svg+xml' }), `${filename}.svg`)
+      downloadFile(new Blob([serialized], { type: 'image/svg+xml' }), `${filename}.svg`)
       return
     }
     const blob = await svgToPngBlob(serialized, l.width + EXPORT_PADDING * 2, l.height + EXPORT_PADDING * 2)
-    if (blob) saveAs(blob, `${filename}.png`)
+    if (blob) downloadFile(blob, `${filename}.png`)
   }, [])
 
   useImperativeHandle(ref, () => ({ fitView, zoomBy, centerOn, exportImage }), [
diff --git a/apps/desktop-ui/src/components/lorem-ipsum/lorem-ipsum-layout.tsx b/apps/desktop-ui/src/components/lorem-ipsum/lorem-ipsum-layout.tsx
index cce8772e..2cf27dfe 100644
--- a/apps/desktop-ui/src/components/lorem-ipsum/lorem-ipsum-layout.tsx
+++ b/apps/desktop-ui/src/components/lorem-ipsum/lorem-ipsum-layout.tsx
@@ -24,6 +24,7 @@ import {
   type LoremUnit,
 } from '@/lib/lorem-ipsum';
 import { useTranslations } from 'next-intl';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 const UNIT_VALUES: LoremUnit[] = ['paragraphs', 'sentences', 'words', 'list'];
 
@@ -65,12 +66,7 @@ export function LoremIpsumLayout() {
   const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: asHtml ? 'text/html' : 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = asHtml ? 'lorem-ipsum.html' : 'lorem-ipsum.txt';
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, asHtml ? 'lorem-ipsum.html' : 'lorem-ipsum.txt');
   };
 
   return (
diff --git a/apps/desktop-ui/src/components/markdown-preview-html/markdown-preview-html-layout.tsx b/apps/desktop-ui/src/components/markdown-preview-html/markdown-preview-html-layout.tsx
index a3dd48f9..af36c900 100644
--- a/apps/desktop-ui/src/components/markdown-preview-html/markdown-preview-html-layout.tsx
+++ b/apps/desktop-ui/src/components/markdown-preview-html/markdown-preview-html-layout.tsx
@@ -14,6 +14,7 @@ import { Copy, Check, Download, Eye, Code } from 'lucide-react';
 import { IconMarkdown } from '@tabler/icons-react';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { IOPanel, ToolTextArea } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 // Configure marked for safe, synchronous rendering
 marked.setOptions({ async: false });
@@ -101,12 +102,7 @@ export function MarkdownPreviewLayout() {
     if (!renderedHtml) return;
     const name = `${safeFileName(fileName)}.html`;
     const blob = new Blob([buildFullHtml(renderedHtml)], { type: 'text/html' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = name;
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, name);
     toast.success(t('exportSuccess', { name }));
   }, [renderedHtml, fileName, t]);
 
diff --git a/apps/desktop-ui/src/components/master-password-gate/backup-codes-file.ts b/apps/desktop-ui/src/components/master-password-gate/backup-codes-file.ts
index 1b01316a..7710e69d 100644
--- a/apps/desktop-ui/src/components/master-password-gate/backup-codes-file.ts
+++ b/apps/desktop-ui/src/components/master-password-gate/backup-codes-file.ts
@@ -1,3 +1,5 @@
+import { downloadFile } from "@/lib/desktop/save-file"
+
 export function downloadBackupCodesFile(codes: string[], userEmail?: string | null) {
     const date = new Date().toLocaleDateString("en-US", {
         year: "numeric",
@@ -32,10 +34,5 @@ export function downloadBackupCodesFile(codes: string[], userEmail?: string | nu
         "========================================",
     ]
     const blob = new Blob([lines.join("\n")], { type: "text/plain" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = "mydevtools-backup-codes.txt"
-    a.click()
-    URL.revokeObjectURL(url)
+    downloadFile(blob, "mydevtools-backup-codes.txt")
 }
diff --git a/apps/desktop-ui/src/components/mock-data-generator/mock-data-generator-layout.tsx b/apps/desktop-ui/src/components/mock-data-generator/mock-data-generator-layout.tsx
index 6d49be74..93eae0fa 100644
--- a/apps/desktop-ui/src/components/mock-data-generator/mock-data-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/mock-data-generator/mock-data-generator-layout.tsx
@@ -34,6 +34,7 @@ import {
 } from '@/components/ui/table'
 import { Textarea } from '@/components/ui/textarea'
 import { cn } from '@/lib/utils'
+import { downloadFile } from '@/lib/desktop/save-file'
 import {
   ALL_FIELD_TYPES,
   FIELD_TYPE_GROUP_STRUCTURE,
@@ -154,12 +155,7 @@ export function MockDataGeneratorLayout() {
   const handleDownload = () => {
     if (!output) return
     const blob = new Blob([output], { type: 'text/plain;charset=utf-8' })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = `mock-data.${extensionForFormat(format)}`
-    a.click()
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `mock-data.${extensionForFormat(format)}`)
   }
 
   const loadPreset = (key: string) => {
@@ -208,12 +204,7 @@ export function MockDataGeneratorLayout() {
     const blob = new Blob([JSON.stringify(toFieldSchema(schemaRows), null, 2)], {
       type: 'application/json;charset=utf-8',
     })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = 'mock-data-schema.json'
-    a.click()
-    URL.revokeObjectURL(url)
+    downloadFile(blob, 'mock-data-schema.json')
   }
 
   const handleImportSchema = async (file: File) => {
diff --git a/apps/desktop-ui/src/components/notes/NotionEditor.tsx b/apps/desktop-ui/src/components/notes/NotionEditor.tsx
index 6a8b2314..c7c64c4f 100644
--- a/apps/desktop-ui/src/components/notes/NotionEditor.tsx
+++ b/apps/desktop-ui/src/components/notes/NotionEditor.tsx
@@ -40,6 +40,7 @@ import {
     readingTimeMinutes,
 } from "@/app/app/notes/utils/noteContentUtils";
 import type { Note } from "@/app/app/notes/types/Note";
+import { downloadFile } from "@/lib/desktop/save-file";
 import {
     mergePendingUpdate,
     requeuePendingUpdates,
@@ -230,12 +231,7 @@ export default function NotionEditor() {
         const src = latestMarkdownRef.current ?? activeContent;
         const md = contentToMarkdown(title || "Untitled", src);
         const blob = new Blob([md], { type: "text/markdown" });
-        const url = URL.createObjectURL(blob);
-        const a = document.createElement("a");
-        a.href = url;
-        a.download = `${(title || "note").replace(/\s+/g, "-")}.md`;
-        a.click();
-        URL.revokeObjectURL(url);
+        downloadFile(blob, `${(title || "note").replace(/\s+/g, "-")}.md`);
     }, [activeContent, title]);
 
     const handleExportHtml = useCallback(() => {
@@ -244,12 +240,7 @@ export default function NotionEditor() {
         const bodyHtml = marked.parse(body, { async: false }) as string;
         const html = `<!DOCTYPE html>\n<html lang="en">\n<head>\n<meta charset="UTF-8" />\n<title>${title || "Note"}</title>\n</head>\n<body>\n<h1 style="font-size:2rem;font-weight:bold;margin-bottom:1rem">${title || "Untitled"}</h1>\n${bodyHtml}</body>\n</html>`;
         const blob = new Blob([html], { type: "text/html" });
-        const url = URL.createObjectURL(blob);
-        const a = document.createElement("a");
-        a.href = url;
-        a.download = `${(title || "note").replace(/\s+/g, "-")}.html`;
-        a.click();
-        URL.revokeObjectURL(url);
+        downloadFile(blob, `${(title || "note").replace(/\s+/g, "-")}.html`);
     }, [activeContent, title]);
 
     const handleApplyTemplate = useCallback((tpl: NoteTemplate) => {
diff --git a/apps/desktop-ui/src/components/password-manager/import-export-dialog.tsx b/apps/desktop-ui/src/components/password-manager/import-export-dialog.tsx
index 3d3ddb4f..52489ac1 100644
--- a/apps/desktop-ui/src/components/password-manager/import-export-dialog.tsx
+++ b/apps/desktop-ui/src/components/password-manager/import-export-dialog.tsx
@@ -23,6 +23,7 @@ import {
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"
 import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert"
 import { useTranslations } from "next-intl"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 interface ImportExportDialogProps {
     children?: React.ReactNode
@@ -67,14 +68,7 @@ export function ImportExportDialog({ children }: ImportExportDialogProps) {
 
     const download = (contents: string, suffix: string) => {
         const blob = new Blob([contents], { type: "application/json" })
-        const url = URL.createObjectURL(blob)
-        const a = document.createElement("a")
-        a.href = url
-        a.download = `password-vault-export-${new Date().toISOString().split("T")[0]}${suffix}.json`
-        document.body.appendChild(a)
-        a.click()
-        document.body.removeChild(a)
-        URL.revokeObjectURL(url)
+        downloadFile(blob, `password-vault-export-${new Date().toISOString().split("T")[0]}${suffix}.json`)
     }
 
     /**
diff --git a/apps/desktop-ui/src/components/s3-drive/file-browser.tsx b/apps/desktop-ui/src/components/s3-drive/file-browser.tsx
index 261e7911..283d8ef7 100644
--- a/apps/desktop-ui/src/components/s3-drive/file-browser.tsx
+++ b/apps/desktop-ui/src/components/s3-drive/file-browser.tsx
@@ -83,6 +83,7 @@ import { RenameDialog } from "./rename-dialog"
 import { ShareLinkDialog } from "./share-link-dialog"
 import { UploadProgressPanel, type FileUploadStatus } from "./upload-progress-panel"
 import { MoveToDialog } from "./move-to-dialog"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 type ViewMode = "list" | "grid"
 type SortCol = "name" | "size" | "modified"
@@ -372,11 +373,7 @@ export function FileBrowser({ credentials, connectionName }: Props) {
             // Fetched through the Rust proxy — a cross-origin presigned URL would
             // hit CORS / unsupported downloads in the Tauri webview.
             const blob = await getObjectBlob(credentials, key)
-            const a = document.createElement("a")
-            a.href = URL.createObjectURL(blob)
-            a.download = key.split("/").pop() ?? key
-            a.click()
-            setTimeout(() => URL.revokeObjectURL(a.href), 30_000)
+            downloadFile(blob, key.split("/").pop() ?? key)
         } catch (err) {
             toast.error(err instanceof Error ? err.message : "Failed to download file")
         }
@@ -496,10 +493,7 @@ export function FileBrowser({ credentials, connectionName }: Props) {
         const fileKeys = Array.from(selectedKeys).filter((k) => !k.endsWith("/"))
         if (!fileKeys.length) { toast.error("No files selected (folders are skipped)"); return }
         setZipProgress({ done: 0, total: fileKeys.length })
-        const [{ default: JSZip }, { saveAs }] = await Promise.all([
-            import("jszip"),
-            import("file-saver"),
-        ])
+        const { default: JSZip } = await import("jszip")
         const zip = new JSZip()
         let ok = 0
         const ZIP_CONCURRENCY = 6
@@ -520,7 +514,7 @@ export function FileBrowser({ credentials, connectionName }: Props) {
         }
         if (ok > 0) {
             const blob = await zip.generateAsync({ type: "blob" })
-            saveAs(blob, `download-${Date.now()}.zip`)
+            downloadFile(blob, `download-${Date.now()}.zip`)
         }
         setZipProgress(null)
     }
diff --git a/apps/desktop-ui/src/components/secret-api-key-generator/secret-api-key-generator-layout.tsx b/apps/desktop-ui/src/components/secret-api-key-generator/secret-api-key-generator-layout.tsx
index 5673c081..6890f5d9 100644
--- a/apps/desktop-ui/src/components/secret-api-key-generator/secret-api-key-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/secret-api-key-generator/secret-api-key-generator-layout.tsx
@@ -29,6 +29,7 @@ import {
   type GenerateSecretStringsErrorKey,
 } from '@/lib/generate-secret-strings';
 import { entropyBits, strengthBucket, type SecretStrength } from '@/lib/secret-entropy';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 const PRESET_BASE64URL =
   'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';
@@ -130,12 +131,7 @@ export function SecretApiKeyGeneratorLayout() {
   const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = t('download.filename');
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, t('download.filename'));
   };
 
   return (
diff --git a/apps/desktop-ui/src/components/ssh-key-generator/ssh-key-generator-layout.tsx b/apps/desktop-ui/src/components/ssh-key-generator/ssh-key-generator-layout.tsx
index f772af28..40daeaad 100644
--- a/apps/desktop-ui/src/components/ssh-key-generator/ssh-key-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/ssh-key-generator/ssh-key-generator-layout.tsx
@@ -21,6 +21,7 @@ import { ToolShell } from '@/components/tools/tool-shell';
 import { IOPanel } from '@/components/tools/io-panel';
 import { CopyTextButton } from '@/components/tools/copy-text-button';
 import { ToolErrorBanner } from '@/components/tools/tool-error-banner';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 type KeyType = 'ed25519' | 'rsa-2048' | 'rsa-4096';
 
@@ -215,12 +216,7 @@ async function generateKeys(type: KeyType, comment: string): Promise<GeneratedKe
 
 function downloadText(text: string, filename: string) {
   const blob = new Blob([text], { type: 'text/plain' });
-  const url = URL.createObjectURL(blob);
-  const a = document.createElement('a');
-  a.href = url;
-  a.download = filename;
-  a.click();
-  URL.revokeObjectURL(url);
+  downloadFile(blob, filename);
 }
 
 function KeyBlock({
diff --git a/apps/desktop-ui/src/components/svg-optimizer/svg-optimizer-layout.tsx b/apps/desktop-ui/src/components/svg-optimizer/svg-optimizer-layout.tsx
index 75e3b95a..d8812aca 100644
--- a/apps/desktop-ui/src/components/svg-optimizer/svg-optimizer-layout.tsx
+++ b/apps/desktop-ui/src/components/svg-optimizer/svg-optimizer-layout.tsx
@@ -14,6 +14,7 @@ import { ToolShell } from '@/components/tools/tool-shell'
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel'
 import { utf8ByteLength } from '@/lib/svg-optimize'
 import { useSvgOptimizeWorker } from '@/hooks/use-svg-optimize-worker'
+import { downloadFile } from '@/lib/desktop/save-file'
 
 const SAMPLE_SVG = `<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120" viewBox="0 0 120 120">
   <!-- demo: metadata + whitespace -->
@@ -74,12 +75,7 @@ export function SvgOptimizerLayout() {
   const handleDownload = () => {
     if (!output.trim()) return
     const blob = new Blob([output], { type: 'image/svg+xml;charset=utf-8' })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement('a')
-    a.href = url
-    a.download = 'optimized.svg'
-    a.click()
-    URL.revokeObjectURL(url)
+    downloadFile(blob, 'optimized.svg')
   }
 
   return (
diff --git a/apps/desktop-ui/src/components/url-encode/url-encode-layout.tsx b/apps/desktop-ui/src/components/url-encode/url-encode-layout.tsx
index dde00d4f..b50068d7 100644
--- a/apps/desktop-ui/src/components/url-encode/url-encode-layout.tsx
+++ b/apps/desktop-ui/src/components/url-encode/url-encode-layout.tsx
@@ -19,6 +19,7 @@ import { SendToMenu } from '@/components/ui/send-to-menu';
 import { IconLink } from '@tabler/icons-react';
 import { ToolShell } from '@/components/tools/tool-shell';
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 type Mode = 'encode' | 'decode';
 
@@ -104,12 +105,7 @@ export function UrlEncodeLayout() {
   const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = mode === 'encode' ? t('download.encodedFilename') : t('download.decodedFilename');
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, mode === 'encode' ? t('download.encodedFilename') : t('download.decodedFilename'));
   };
 
   const handleDrop = (e: React.DragEvent) => {
diff --git a/apps/desktop-ui/src/components/url-parser/url-parser-layout.tsx b/apps/desktop-ui/src/components/url-parser/url-parser-layout.tsx
index 4c64e7cd..80becf1f 100644
--- a/apps/desktop-ui/src/components/url-parser/url-parser-layout.tsx
+++ b/apps/desktop-ui/src/components/url-parser/url-parser-layout.tsx
@@ -9,6 +9,7 @@ import { useTranslations } from 'next-intl'
 import { IconLink } from '@tabler/icons-react'
 import { ToolShell } from '@/components/tools/tool-shell'
 import { ToolPanels, IOPanel, ToolTextArea } from '@/components/tools/io-panel'
+import { downloadFile } from '@/lib/desktop/save-file'
 
 type ParsedParam = {
   key: string
@@ -71,12 +72,7 @@ function DownloadJsonButton({ data, filename, title }: { data: unknown; filename
       className="h-6 w-6"
       onClick={() => {
         const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' })
-        const url = URL.createObjectURL(blob)
-        const a = document.createElement('a')
-        a.href = url
-        a.download = filename
-        a.click()
-        URL.revokeObjectURL(url)
+        downloadFile(blob, filename)
       }}
       title={title}
     >
diff --git a/apps/desktop-ui/src/components/uuid-generator/uuid-generator-layout.tsx b/apps/desktop-ui/src/components/uuid-generator/uuid-generator-layout.tsx
index bfa6281d..2dc79ed1 100644
--- a/apps/desktop-ui/src/components/uuid-generator/uuid-generator-layout.tsx
+++ b/apps/desktop-ui/src/components/uuid-generator/uuid-generator-layout.tsx
@@ -32,6 +32,7 @@ import { ToolShell } from '@/components/tools/tool-shell';
 import { IOPanel } from '@/components/tools/io-panel';
 import { CopyIconButton } from '@/components/tools/copy-icon-button';
 import { ToolErrorBanner } from '@/components/tools/tool-error-banner';
+import { downloadFile } from '@/lib/desktop/save-file';
 
 const KIND_OPTIONS: { value: IdKind; label: string }[] = [
   { value: 'ulid', label: 'ULID' },
@@ -118,12 +119,7 @@ export function UuidGeneratorLayout() {
   const handleDownload = () => {
     if (!output) return;
     const blob = new Blob([output], { type: 'text/plain' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = t('download.filename', { kind });
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(blob, t('download.filename', { kind }));
   };
 
   return (
diff --git a/apps/desktop-ui/src/components/websocket-tester/websocket-tester-layout.tsx b/apps/desktop-ui/src/components/websocket-tester/websocket-tester-layout.tsx
index 257a47c3..6160f104 100644
--- a/apps/desktop-ui/src/components/websocket-tester/websocket-tester-layout.tsx
+++ b/apps/desktop-ui/src/components/websocket-tester/websocket-tester-layout.tsx
@@ -2,7 +2,6 @@
 
 import React, { useCallback, useEffect, useRef, useState } from 'react'
 import { useTranslations } from 'next-intl'
-import { saveAs } from 'file-saver'
 import { toast } from 'sonner'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
@@ -27,6 +26,7 @@ import { cn } from '@/lib/utils'
 import { useCopyToClipboard } from '@/hooks/use-copy-to-clipboard'
 import { ToolShell } from '@/components/tools/tool-shell'
 import { IOPanel, ToolTextArea } from '@/components/tools/io-panel'
+import { downloadFile } from '@/lib/desktop/save-file'
 import {
   describeCloseEvent,
   formatLogEntry,
@@ -242,7 +242,7 @@ export function WebsocketTesterLayout() {
     const blob = new Blob([entries.map(formatLogEntry).join('\n') + '\n'], {
       type: 'text/plain;charset=utf-8',
     })
-    saveAs(blob, `websocket-log-${new Date().toISOString().replace(/[:.]/g, '-')}.txt`)
+    downloadFile(blob, `websocket-log-${new Date().toISOString().replace(/[:.]/g, '-')}.txt`)
   }
 
   const isConnected = status === 'connected'
diff --git a/apps/desktop-ui/src/lib/__tests__/api-fetch-web-guard.test.ts b/apps/desktop-ui/src/lib/__tests__/api-fetch-web-guard.test.ts
new file mode 100644
index 00000000..f4ea87b7
--- /dev/null
+++ b/apps/desktop-ui/src/lib/__tests__/api-fetch-web-guard.test.ts
@@ -0,0 +1,36 @@
+/**
+ * Outside the Tauri window there is no local store, so `/api/v1/*` and
+ * `/api/backend/*` must fail with a readable 501 instead of falling through to
+ * Next's 404 HTML page (which used to surface verbatim in error toasts).
+ * Every other `/api/...` path stays a plain fetch — the api-client proxies
+ * are real HTTP endpoints.
+ */
+import { apiFetch } from "@/lib/desktop/api-fetch"
+
+describe("apiFetch outside the desktop app", () => {
+  const originalFetch = global.fetch
+  afterEach(() => {
+    global.fetch = originalFetch
+  })
+
+  it.each(["/api/v1/user-preferences", "/api/backend/notes"])(
+    "fails %s with a readable 501 and never hits the network",
+    async (path) => {
+      global.fetch = jest.fn() as unknown as typeof fetch
+      const res = await apiFetch(path)
+
+      expect(global.fetch).not.toHaveBeenCalled()
+      expect(res.status).toBe(501)
+      const { detail } = await res.json()
+      expect(detail).toContain(path)
+      expect(detail).toContain("pnpm dev:desktop")
+    },
+  )
+
+  it("passes other /api paths through to fetch", async () => {
+    global.fetch = jest.fn().mockResolvedValue(new Response("{}")) as unknown as typeof fetch
+    await apiFetch("/api/proxy-grpc", { method: "POST" })
+
+    expect(global.fetch).toHaveBeenCalledWith("/api/proxy-grpc", { method: "POST" })
+  })
+})
diff --git a/apps/desktop-ui/src/lib/csv-excel-json-utils.ts b/apps/desktop-ui/src/lib/csv-excel-json-utils.ts
index 258d2425..3caf2514 100644
--- a/apps/desktop-ui/src/lib/csv-excel-json-utils.ts
+++ b/apps/desktop-ui/src/lib/csv-excel-json-utils.ts
@@ -2,6 +2,8 @@
  * CSV / Excel ↔ JSON helpers (browser). Dates: CSV ISO-like strings stay strings;
  * Excel uses cellDates + serial fallback → ISO strings in JSON.
  */
+import type { BookType, WorkBook } from "xlsx";
+import { downloadFile } from "@/lib/desktop/save-file";
 
 export function parseCSVLine(line: string): string[] {
   const result: string[] = [];
@@ -140,13 +142,21 @@ export function rowsToCSV(rows: Record<string, unknown>[]): string {
   return [header, ...body].join("\n");
 }
 
-export function triggerDownload(blob: Blob, filename: string) {
-  const url = URL.createObjectURL(blob);
-  const a = document.createElement("a");
-  a.href = url;
-  a.download = filename;
-  a.click();
-  URL.revokeObjectURL(url);
+const WORKBOOK_MIME: Partial<Record<BookType, string>> = {
+  xlsx: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+  csv: "text/csv;charset=utf-8",
+  txt: "text/plain;charset=utf-8",
+};
+
+/**
+ * Write a SheetJS workbook to a file. `XLSX.writeFile` builds its own anchor
+ * download, which the Tauri webview cancels — serialize and hand the bytes to
+ * downloadFile instead.
+ */
+export async function downloadWorkbook(wb: WorkBook, filename: string, bookType: BookType = "xlsx") {
+  const XLSX = await import("xlsx");
+  const data = XLSX.write(wb, { type: "array", bookType }) as ArrayBuffer;
+  downloadFile(new Uint8Array(data), filename, WORKBOOK_MIME[bookType]);
 }
 
 export async function rowsToXlsxFile(
@@ -158,5 +168,5 @@ export async function rowsToXlsxFile(
   const ws = XLSX.utils.json_to_sheet(rows);
   const wb = XLSX.utils.book_new();
   XLSX.utils.book_append_sheet(wb, ws, sheetName.slice(0, 31) || "Sheet1");
-  XLSX.writeFile(wb, filename);
+  await downloadWorkbook(wb, filename);
 }
diff --git a/apps/desktop-ui/src/lib/desktop/__tests__/save-file.test.ts b/apps/desktop-ui/src/lib/desktop/__tests__/save-file.test.ts
new file mode 100644
index 00000000..753506b6
--- /dev/null
+++ b/apps/desktop-ui/src/lib/desktop/__tests__/save-file.test.ts
@@ -0,0 +1,86 @@
+/**
+ * Web-branch behaviour of saveFile: every tool routes its downloads through
+ * here, so the anchor must carry the right filename and the right bytes.
+ * The desktop branch needs a live Tauri webview and is not covered.
+ */
+jest.mock("sonner", () => ({ toast: { error: jest.fn() } }))
+
+import { toast } from "sonner"
+import { downloadFile, saveFile } from "@/lib/desktop/save-file"
+
+type FakeAnchor = { href: string; download: string; click: jest.Mock }
+
+function stubDom() {
+  const anchors: FakeAnchor[] = []
+  const blobs = new Map<string, Blob>()
+  const origCreate = URL.createObjectURL
+  const origRevoke = URL.revokeObjectURL
+
+  ;(globalThis as unknown as { document: unknown }).document = {
+    createElement: () => {
+      const a: FakeAnchor = { href: "", download: "", click: jest.fn() }
+      anchors.push(a)
+      return a
+    },
+  }
+  URL.createObjectURL = ((blob: Blob) => {
+    const url = `blob:${blobs.size}`
+    blobs.set(url, blob)
+    return url
+  }) as typeof URL.createObjectURL
+  URL.revokeObjectURL = (() => {}) as typeof URL.revokeObjectURL
+
+  return {
+    anchors,
+    /** The blob the last anchor pointed at. */
+    saved: () => blobs.get(anchors[anchors.length - 1].href)!,
+    restore() {
+      delete (globalThis as unknown as { document?: unknown }).document
+      URL.createObjectURL = origCreate
+      URL.revokeObjectURL = origRevoke
+    },
+  }
+}
+
+describe("saveFile (web)", () => {
+  let dom: ReturnType<typeof stubDom>
+  beforeEach(() => {
+    dom = stubDom()
+    ;(toast.error as jest.Mock).mockClear()
+  })
+  afterEach(() => dom.restore())
+
+  it("downloads a string under the given filename", async () => {
+    expect(await saveFile("hello", "note.txt", "text/plain")).toBe(true)
+    const a = dom.anchors[0]
+    expect(a.download).toBe("note.txt")
+    expect(a.click).toHaveBeenCalled()
+    await expect(dom.saved().text()).resolves.toBe("hello")
+    expect(dom.saved().type).toBe("text/plain")
+  })
+
+  it("preserves binary payloads byte for byte", async () => {
+    const bytes = new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x00, 0xff])
+    await saveFile(bytes, "icon.png", "image/png")
+    const out = new Uint8Array(await dom.saved().arrayBuffer())
+    expect(Array.from(out)).toEqual(Array.from(bytes))
+  })
+
+  it("passes a Blob through without rewrapping its type", async () => {
+    const blob = new Blob(["<svg />"], { type: "image/svg+xml" })
+    await saveFile(blob, "out.svg")
+    expect(dom.saved()).toBe(blob)
+    expect(dom.anchors[0].download).toBe("out.svg")
+  })
+
+  it("reports a failed save as a toast instead of an unhandled rejection", async () => {
+    ;(globalThis as unknown as { document: { createElement: () => never } }).document = {
+      createElement: () => {
+        throw new Error("no DOM")
+      },
+    }
+    downloadFile("x", "x.txt")
+    await new Promise((r) => setTimeout(r, 0))
+    expect(toast.error).toHaveBeenCalledWith("no DOM")
+  })
+})
diff --git a/apps/desktop-ui/src/lib/desktop/api-fetch.ts b/apps/desktop-ui/src/lib/desktop/api-fetch.ts
index b33a27ee..90c4be60 100644
--- a/apps/desktop-ui/src/lib/desktop/api-fetch.ts
+++ b/apps/desktop-ui/src/lib/desktop/api-fetch.ts
@@ -1,12 +1,27 @@
 import { isDesktop } from "./is-desktop";
 import { localApi, normalizeBackendPath, toResponse } from "./bridge";
 
+/**
+ * Dev-only failure message. It can only appear when this UI runs outside the
+ * Tauri window (`pnpm dev` instead of `pnpm dev:desktop`), never in the
+ * shipped app — so it is intentionally untranslated.
+ */
+const NOT_IN_DESKTOP =
+  "No local data store: this UI is running outside the desktop app. Run `pnpm dev:desktop` and use the app window.";
+
+function notInDesktopResponse(path: string): Response {
+  return new Response(JSON.stringify({ detail: `${NOT_IN_DESKTOP} (${path})` }), {
+    status: 501,
+    headers: { "Content-Type": "application/json" },
+  });
+}
+
 /**
  * Desktop-aware fetch for same-origin `/api/...` paths.
  *
- * On web this is a plain `fetch` pass-through. On desktop it routes
- * `/api/backend/*` (and `/api/v1/*`) paths to the Rust local router.
- * Remote routing (shared workspaces / sync) is layered on in Phase 4.
+ * On desktop it routes `/api/backend/*` (and `/api/v1/*`) paths to the Rust
+ * local router. Off desktop those two prefixes have nowhere to go and fail
+ * with a 501; anything else is a plain `fetch` pass-through.
  */
 /**
  * Send an api-client request and return the `/api/proxy` envelope directly.
@@ -44,6 +59,12 @@ export async function sendProxyRequest(input: unknown, signal?: AbortSignal): Pr
 
 export async function apiFetch(path: string, init?: RequestInit): Promise<Response> {
   if (!isDesktop()) {
+    // Store paths have no HTTP equivalent — they are the Rust local router's
+    // contract. Outside the desktop window they hit Next's 404 page, whose
+    // HTML would surface verbatim in a toast, so fail legibly instead.
+    if (path.startsWith("/api/v1/") || path.startsWith("/api/backend/")) {
+      return notInDesktopResponse(path);
+    }
     return fetch(path, init);
   }
   const method = (init?.method || "GET").toUpperCase();
diff --git a/apps/desktop-ui/src/lib/desktop/backup.ts b/apps/desktop-ui/src/lib/desktop/backup.ts
index 492e5a22..08280808 100644
--- a/apps/desktop-ui/src/lib/desktop/backup.ts
+++ b/apps/desktop-ui/src/lib/desktop/backup.ts
@@ -12,6 +12,7 @@
  * reuse it) and is NOT recoverable — losing it means losing the backup.
  */
 import { localApi } from "./bridge";
+import { downloadFile } from "./save-file";
 
 const MAGIC = "MDTBACKUP";
 const FORMAT_VERSION = 1;
@@ -91,14 +92,7 @@ export async function exportBackup(passphrase: string): Promise<Blob> {
 /** Export and hand the encrypted backup to the browser as a file download. */
 export async function downloadBackup(passphrase: string): Promise<void> {
   const blob = await exportBackup(passphrase);
-  const url = URL.createObjectURL(blob);
-  const a = document.createElement("a");
-  a.href = url;
-  a.download = `mydevtools-backup-${new Date().toISOString().split("T")[0]}.json`;
-  document.body.appendChild(a);
-  a.click();
-  document.body.removeChild(a);
-  URL.revokeObjectURL(url);
+  downloadFile(blob, `mydevtools-backup-${new Date().toISOString().split("T")[0]}.json`);
 }
 
 /** True if the local vault already has a configured master password. */
diff --git a/apps/desktop-ui/src/lib/desktop/save-file.ts b/apps/desktop-ui/src/lib/desktop/save-file.ts
new file mode 100644
index 00000000..b2837cbc
--- /dev/null
+++ b/apps/desktop-ui/src/lib/desktop/save-file.ts
@@ -0,0 +1,53 @@
+/**
+ * Save generated bytes to disk from a tool.
+ *
+ * The Tauri webview has no download handler, so wry answers every
+ * `<a download>` navigation with `WKNavigationActionPolicy::Cancel` — anchor
+ * downloads (file-saver included) are silently dropped in the desktop app.
+ * On desktop we therefore ask for a path with the native Save dialog and write
+ * the bytes ourselves; on web the anchor download stays the only option.
+ */
+import { toast } from "sonner"
+import { isDesktop } from "./is-desktop"
+
+export type SaveData = Uint8Array | ArrayBuffer | Blob | string
+
+/**
+ * Returns false when the user dismissed the Save dialog; throws when the write
+ * itself fails, so callers can surface their own reason. Prefer
+ * {@link downloadFile} unless you need that distinction.
+ */
+export async function saveFile(data: SaveData, filename: string, mime?: string): Promise<boolean> {
+  if (isDesktop()) {
+    const { save } = await import("@tauri-apps/plugin-dialog")
+    const path = await save({ defaultPath: filename })
+    if (!path) return false
+    const { writeFile, writeTextFile } = await import("@tauri-apps/plugin-fs")
+    if (typeof data === "string") await writeTextFile(path, data)
+    else await writeFile(path, new Uint8Array(await toArrayBuffer(data)))
+    return true
+  }
+
+  const blob = data instanceof Blob ? data : new Blob([data as BlobPart], { type: mime })
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement("a")
+  a.href = url
+  a.download = filename
+  a.click()
+  // Revoke on the next tick — revoking synchronously can race the download.
+  setTimeout(() => URL.revokeObjectURL(url), 0)
+  return true
+}
+
+/** Fire-and-forget {@link saveFile}: a failed write surfaces as a toast. */
+export function downloadFile(data: SaveData, filename: string, mime?: string): void {
+  void saveFile(data, filename, mime).catch((err: unknown) => {
+    toast.error(err instanceof Error ? err.message : String(err))
+  })
+}
+
+function toArrayBuffer(data: Exclude<SaveData, string>): Promise<ArrayBuffer> | ArrayBuffer {
+  if (data instanceof Blob) return data.arrayBuffer()
+  if (data instanceof ArrayBuffer) return data
+  return data.buffer.slice(data.byteOffset, data.byteOffset + data.byteLength) as ArrayBuffer
+}
diff --git a/apps/desktop-ui/src/lib/export/har.ts b/apps/desktop-ui/src/lib/export/har.ts
index 6dd54b37..2e9c73f4 100644
--- a/apps/desktop-ui/src/lib/export/har.ts
+++ b/apps/desktop-ui/src/lib/export/har.ts
@@ -5,6 +5,7 @@
  */
 
 import type { Collection, CollectionFolder, CollectionRequest, SavedExample } from "@/components/api-client/types"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 interface HarHeader { name: string; value: string }
 
@@ -141,12 +142,5 @@ export function exportCollectionAsHar(collection: Collection): string {
 export function downloadCollectionAsHar(collection: Collection): void {
     if (typeof window === "undefined") return
     const blob = new Blob([exportCollectionAsHar(collection)], { type: "application/json" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "collection"}.har`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "collection"}.har`)
 }
diff --git a/apps/desktop-ui/src/lib/export/insomnia.ts b/apps/desktop-ui/src/lib/export/insomnia.ts
index fb9c61fe..d238de11 100644
--- a/apps/desktop-ui/src/lib/export/insomnia.ts
+++ b/apps/desktop-ui/src/lib/export/insomnia.ts
@@ -5,6 +5,7 @@
  */
 
 import type { Collection, CollectionFolder, CollectionRequest } from "@/components/api-client/types"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 interface InsomniaRequest {
     _id: string
@@ -136,12 +137,5 @@ export function exportCollectionAsInsomnia(collection: Collection): string {
 export function downloadCollectionAsInsomnia(collection: Collection): void {
     if (typeof window === "undefined") return
     const blob = new Blob([exportCollectionAsInsomnia(collection)], { type: "application/json" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "collection"}.insomnia.json`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "collection"}.insomnia.json`)
 }
diff --git a/apps/desktop-ui/src/lib/export/openapi.ts b/apps/desktop-ui/src/lib/export/openapi.ts
index 5bd1d895..c3c76bb3 100644
--- a/apps/desktop-ui/src/lib/export/openapi.ts
+++ b/apps/desktop-ui/src/lib/export/openapi.ts
@@ -13,6 +13,7 @@
  * Output is a JSON OpenAPI 3.0 document. YAML conversion can be done with `js-yaml`
  * client-side if needed.
  */
+import { downloadFile } from "@/lib/desktop/save-file"
 
 import type {
     Collection,
@@ -206,12 +207,5 @@ export function downloadCollectionAsOpenApi(collection: Collection): void {
     if (typeof window === "undefined") return
     const doc = exportCollectionAsOpenApi(collection)
     const blob = new Blob([JSON.stringify(doc, null, 2)], { type: "application/json" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "openapi"}.openapi.json`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${collection.name.replace(/[^A-Za-z0-9_-]+/g, "_") || "openapi"}.openapi.json`)
 }
diff --git a/apps/desktop-ui/src/lib/export/postman-env.ts b/apps/desktop-ui/src/lib/export/postman-env.ts
index 3bdc0b55..f8fe7a99 100644
--- a/apps/desktop-ui/src/lib/export/postman-env.ts
+++ b/apps/desktop-ui/src/lib/export/postman-env.ts
@@ -3,6 +3,7 @@
  */
 
 import type { Environment } from "@/components/api-client/use-environments"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 export function exportPostmanEnvironment(env: Environment): string {
     return JSON.stringify(
@@ -24,12 +25,5 @@ export function exportPostmanEnvironment(env: Environment): string {
 export function downloadEnvironmentAsPostman(env: Environment): void {
     if (typeof window === "undefined") return
     const blob = new Blob([exportPostmanEnvironment(env)], { type: "application/json" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${env.name.replace(/[^a-zA-Z0-9-_]+/g, "_") || "environment"}.postman_environment.json`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${env.name.replace(/[^a-zA-Z0-9-_]+/g, "_") || "environment"}.postman_environment.json`)
 }
diff --git a/apps/desktop-ui/src/lib/export/postman.ts b/apps/desktop-ui/src/lib/export/postman.ts
index 10289758..630619c4 100644
--- a/apps/desktop-ui/src/lib/export/postman.ts
+++ b/apps/desktop-ui/src/lib/export/postman.ts
@@ -3,6 +3,7 @@
  * for the same subset of features. Pre-request + test scripts come along
  * as `event[]` entries.
  */
+import { downloadFile } from "@/lib/desktop/save-file"
 
 import type {
     Collection,
@@ -170,12 +171,5 @@ export function downloadCollectionAsPostman(collection: Collection): void {
     if (typeof window === "undefined") return
     const json = exportPostmanCollection(collection)
     const blob = new Blob([json], { type: "application/json" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${collection.name.replace(/[^a-zA-Z0-9-_]+/g, "_") || "collection"}.postman_collection.json`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${collection.name.replace(/[^a-zA-Z0-9-_]+/g, "_") || "collection"}.postman_collection.json`)
 }
diff --git a/apps/desktop-ui/src/lib/json-utils/import-export.ts b/apps/desktop-ui/src/lib/json-utils/import-export.ts
index 72d40890..10e75c78 100644
--- a/apps/desktop-ui/src/lib/json-utils/import-export.ts
+++ b/apps/desktop-ui/src/lib/json-utils/import-export.ts
@@ -1,6 +1,7 @@
 /**
  * Import/Export utilities for JSON Editor
  */
+import { downloadFile } from "@/lib/desktop/save-file"
 
 /**
  * Load JSON from a file
@@ -38,13 +39,7 @@ export async function importJSONFromFile(): Promise<string> {
  * Export JSON to a file
  */
 export function exportJSONToFile(content: string, filename = 'data.json') {
-    const blob = new Blob([content], { type: 'application/json' });
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = filename;
-    a.click();
-    URL.revokeObjectURL(url);
+    downloadFile(content, filename, 'application/json');
 }
 
 /**
@@ -85,13 +80,7 @@ export function exportJSONAsCSV(content: string, filename = 'data.csv'): { succe
             ),
         ].join('\n');
 
-        const blob = new Blob([csv], { type: 'text/csv' });
-        const url = URL.createObjectURL(blob);
-        const a = document.createElement('a');
-        a.href = url;
-        a.download = filename;
-        a.click();
-        URL.revokeObjectURL(url);
+        downloadFile(csv, filename, 'text/csv');
 
         return { success: true };
     } catch (err) {
diff --git a/apps/desktop-ui/src/lib/runner/junit.ts b/apps/desktop-ui/src/lib/runner/junit.ts
index f5314eb1..a1ad264b 100644
--- a/apps/desktop-ui/src/lib/runner/junit.ts
+++ b/apps/desktop-ui/src/lib/runner/junit.ts
@@ -5,6 +5,7 @@
  */
 
 import type { RequestRunResult } from "./types"
+import { downloadFile } from "@/lib/desktop/save-file"
 
 function escapeXml(s: string): string {
     return String(s)
@@ -63,12 +64,5 @@ export function downloadJUnitXml(results: RequestRunResult[], suiteName: string)
     if (typeof window === "undefined") return
     const xml = buildJUnitXml(results, suiteName)
     const blob = new Blob([xml], { type: "application/xml" })
-    const url = URL.createObjectURL(blob)
-    const a = document.createElement("a")
-    a.href = url
-    a.download = `${suiteName.replace(/[^A-Za-z0-9_-]+/g, "_") || "run"}-junit.xml`
-    document.body.appendChild(a)
-    a.click()
-    document.body.removeChild(a)
-    URL.revokeObjectURL(url)
+    downloadFile(blob, `${suiteName.replace(/[^A-Za-z0-9_-]+/g, "_") || "run"}-junit.xml`)
 }
diff --git a/apps/desktop/src-tauri/capabilities/default.json b/apps/desktop/src-tauri/capabilities/default.json
index 86facd76..2604fffd 100644
--- a/apps/desktop/src-tauri/capabilities/default.json
+++ b/apps/desktop/src-tauri/capabilities/default.json
@@ -2,7 +2,9 @@
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
   "description": "Default capability for the main window",
-  "windows": ["main"],
+  "windows": [
+    "main"
+  ],
   "permissions": [
     "core:default",
     "core:window:allow-start-dragging",
@@ -13,6 +15,7 @@
     "dialog:default",
     "fs:allow-read-text-file",
     "fs:allow-write-text-file",
+    "fs:allow-write-file",
     "fs:allow-read-dir",
     "fs:allow-mkdir",
     "fs:allow-remove",
diff --git a/apps/web/package.json b/apps/web/package.json
index 548785f0..04714e4a 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -27,7 +27,7 @@
     "@radix-ui/react-tabs": "^1.1.21",
     "@space-man/react-theme-animation": "^1.1.1",
     "@tabler/icons-react": "^3.46.0",
-    "@vercel/analytics": "^1.6.1",
+    "@vercel/analytics": "^2.0.1",
     "@vercel/speed-insights": "^1.3.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3979901c..3e09dcee 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -197,9 +197,6 @@ importers:
       fast-xml-parser:
         specifier: ^5.11.1
         version: 5.11.1
-      file-saver:
-        specifier: ^2.0.5
-        version: 2.0.5
       framer-motion:
         specifier: ^12.43.0
         version: 12.43.0(react-dom@19.2.8(react@19.2.8))(react@19.2.8)
@@ -360,9 +357,6 @@ importers:
       '@next/bundle-analyzer':
         specifier: ^16.3.3
         version: 16.3.3
-      '@types/file-saver':
-        specifier: ^2.0.7
-        version: 2.0.7
       '@types/jest':
         specifier: ^30.0.0
         version: 30.0.0
@@ -454,8 +448,8 @@ importers:
         specifier: ^3.46.0
         version: 3.46.0(react@19.2.8)
       '@vercel/analytics':
-        specifier: ^1.6.1
-        version: 1.6.1(next@16.3.3(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8))(react@19.2.8)(svelte@5.56.9(@typescript-eslint/types@8.68.0))(vue@3.5.41(typescript@5.9.3))
+        specifier: ^2.0.1
+        version: 2.0.1(next@16.3.3(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8))(react@19.2.8)(svelte@5.56.9(@typescript-eslint/types@8.68.0))(vue@3.5.41(typescript@5.9.3))
       '@vercel/speed-insights':
         specifier: ^1.3.1
         version: 1.3.1(next@16.3.3(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8))(react@19.2.8)(svelte@5.56.9(@typescript-eslint/types@8.68.0))(vue@3.5.41(typescript@5.9.3))
@@ -3471,9 +3465,6 @@ packages:
   '@types/estree@1.0.9':
     resolution: {integrity: sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg==}
 
-  '@types/file-saver@2.0.7':
-    resolution: {integrity: sha512-dNKVfHd/jk0SkR/exKGj2ggkB45MAkzvWCaqLUUgkyjITkGNzH8H+yUwr+BLJUBjZOe9w8X3wgmXhZDRg1ED6A==}
-
   '@types/hast@3.0.5':
     resolution: {integrity: sha512-rp/ezSWaD1m44dPKICGhiskI13nVr7qTloFwDa/IYkhhf5nzwP+zIQcIJh3WIFSBOy/H1PzB40jPjMDksN4F+g==}
 
@@ -3754,12 +3745,13 @@ packages:
     cpu: [x64]
     os: [win32]
 
-  '@vercel/analytics@1.6.1':
-    resolution: {integrity: sha512-oH9He/bEM+6oKlv3chWuOOcp8Y6fo6/PSro8hEkgCW3pu9/OiCXiUpRUogDh3Fs3LH2sosDrx8CxeOLBEE+afg==}
+  '@vercel/analytics@2.0.1':
+    resolution: {integrity: sha512-MTQG6V9qQrt1tsDeF+2Uoo5aPjqbVPys1xvnIftXSJYG2SrwXRHnqEvVoYID7BTruDz4lCd2Z7rM1BdkUehk2g==}
     peerDependencies:
       '@remix-run/react': ^2
       '@sveltejs/kit': ^1 || ^2
       next: '>= 13'
+      nuxt: '>= 3'
       react: ^18 || ^19 || ^19.0.0-rc
       svelte: '>= 4'
       vue: ^3
@@ -3771,6 +3763,8 @@ packages:
         optional: true
       next:
         optional: true
+      nuxt:
+        optional: true
       react:
         optional: true
       svelte:
@@ -4878,9 +4872,6 @@ packages:
     resolution: {integrity: sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==}
     engines: {node: '>=16.0.0'}
 
-  file-saver@2.0.5:
-    resolution: {integrity: sha512-P9bmyZ3h/PRG+Nzga+rbdI4OEpNDzAVyy74uVO9ATgzLK6VtAsYybF/+TOCvrc0MO793d6+42lLyZTw7/ArVzA==}
-
   fill-range@7.1.1:
     resolution: {integrity: sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==}
     engines: {node: '>=8'}
@@ -11166,8 +11157,6 @@ snapshots:
 
   '@types/estree@1.0.9': {}
 
-  '@types/file-saver@2.0.7': {}
-
   '@types/hast@3.0.5':
     dependencies:
       '@types/unist': 3.0.3
@@ -11430,7 +11419,7 @@ snapshots:
   '@unrs/resolver-binding-win32-x64-msvc@1.12.2':
     optional: true
 
-  '@vercel/analytics@1.6.1(next@16.3.3(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8))(react@19.2.8)(svelte@5.56.9(@typescript-eslint/types@8.68.0))(vue@3.5.41(typescript@5.9.3))':
+  '@vercel/analytics@2.0.1(next@16.3.3(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8))(react@19.2.8)(svelte@5.56.9(@typescript-eslint/types@8.68.0))(vue@3.5.41(typescript@5.9.3))':
     optionalDependencies:
       next: 16.3.3(@babel/core@7.29.7)(@types/node@24.13.3)(react-dom@19.2.8(react@19.2.8))(react@19.2.8)
       react: 19.2.8
@@ -12779,8 +12768,6 @@ snapshots:
     dependencies:
       flat-cache: 4.0.1
 
-  file-saver@2.0.5: {}
-
   fill-range@7.1.1:
     dependencies:
       to-regex-range: 5.0.1