fix: reject oversized checkout diffs (#2488)

* fix: reject oversized checkout diffs

* fix(diff): keep large previews from disconnecting clients

The physical socket limit is an OOM backstop, not a frame-size contract. Bound structured diff construction incrementally and report oversized previews without closing the client's socket.

* fix(app): preserve oversized diff state

* fix(diff): stay within relay frame limit

---------

Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>

packages/app/src/i18n/resources/ar.ts

@@ -764,6 +764,8 @@ export const ar: TranslationResources = {
         closeChangesTab: "إغلاق علامة تبويب التغييرات",
         binaryFile: "ملف ثنائي",
         tooLarge: "الفرق كبير جدًا بحيث لا يمكن عرضه",
+        previewTooLargeTitle: "هذا الفرق كبير جدًا بحيث لا يمكن معاينته",
+        previewTooLargeDescription: "ضيّق نطاق المقارنة لمعاينتها هنا",
         unified: "الفرق الموحدة",
         split: "فرق جنبًا إلى جنب",
         switchToUnified: "التبديل إلى الفرق الموحد",

packages/app/src/i18n/resources/en.ts

@@ -774,6 +774,8 @@ export const en = {
         closeChangesTab: "Close Changes tab",
         binaryFile: "Binary file",
         tooLarge: "Diff too large to display",
+        previewTooLargeTitle: "This diff is too large to preview",
+        previewTooLargeDescription: "Narrow the comparison to preview it here",
         unified: "Unified diff",
         split: "Side-by-side diff",
         switchToUnified: "Switch to unified diff",

packages/app/src/i18n/resources/es.ts

@@ -795,6 +795,8 @@ export const es: TranslationResources = {
         closeChangesTab: "Cerrar la pestaña Cambios",
         binaryFile: "archivo binario",
         tooLarge: "La diferencia es demasiado grande para mostrarse",
+        previewTooLargeTitle: "Este diff es demasiado grande para previsualizarlo",
+        previewTooLargeDescription: "Reduce la comparación para previsualizarla aquí",
         unified: "Diferencia unificada",
         split: "Diferencia de lado a lado",
         switchToUnified: "Cambiar a diferencia unificada",

packages/app/src/i18n/resources/fr.ts

@@ -794,6 +794,8 @@ export const fr: TranslationResources = {
         closeChangesTab: "Fermer l'onglet Modifications",
         binaryFile: "Fichier binaire",
         tooLarge: "Diff trop grand pour être affiché",
+        previewTooLargeTitle: "Ce diff est trop volumineux pour être prévisualisé",
+        previewTooLargeDescription: "Réduisez la comparaison pour la prévisualiser ici",
         unified: "Différentiel unifié",
         split: "Différent côte à côte",
         switchToUnified: "Passer au diff unifié",

packages/app/src/i18n/resources/ja.ts

@@ -775,6 +775,8 @@ export const ja: TranslationResources = {
         closeChangesTab: "変更タブを閉じる",
         binaryFile: "バイナリファイル",
         tooLarge: "差分が大きすぎて表示できません",
+        previewTooLargeTitle: "この差分は大きすぎるためプレビューできません",
+        previewTooLargeDescription: "比較範囲を狭めると、ここでプレビューできます",
         unified: "ユニファイド差分",
         split: "左右比較",
         switchToUnified: "ユニファイド差分に切り替え",

packages/app/src/i18n/resources/pt-BR.ts

@@ -786,6 +786,8 @@ export const ptBR: TranslationResources = {
         closeChangesTab: "Fechar a aba Alterações",
         binaryFile: "Arquivo binário",
         tooLarge: "Diff grande demais para exibir",
+        previewTooLargeTitle: "Este diff é grande demais para visualizar",
+        previewTooLargeDescription: "Reduza a comparação para visualizá-la aqui",
         unified: "Diff unificado",
         split: "Diff lado a lado",
         switchToUnified: "Alternar para diff unificado",

packages/app/src/i18n/resources/ru.ts

@@ -786,6 +786,8 @@ export const ru: TranslationResources = {
         closeChangesTab: "Закрыть вкладку «Изменения»",
         binaryFile: "Бинарный файл",
         tooLarge: "Разница слишком велика для отображения",
+        previewTooLargeTitle: "Этот diff слишком велик для предпросмотра",
+        previewTooLargeDescription: "Сузьте сравнение, чтобы просмотреть его здесь",
         unified: "Единый дифференциал",
         split: "Параллельная разница",
         switchToUnified: "Переключить на объединенный diff",

packages/app/src/i18n/resources/zh-CN.ts

@@ -756,6 +756,8 @@ export const zhCN: TranslationResources = {
         closeChangesTab: "关闭“更改”标签页",
         binaryFile: "二进制文件",
         tooLarge: "Diff 过大，无法显示",
+        previewTooLargeTitle: "此 diff 过大，无法预览",
+        previewTooLargeDescription: "缩小比较范围即可在此预览",
         unified: "Unified diff",
         split: "Side-by-side diff",
         switchToUnified: "切换到统一差异视图",