feat(app): make the side panel user-directed (#3605)

* feat(app): let the file panel close its tree rail

The file panel's tree rail was permanent on desktop — the changes panel
had a folder-tree toggle in its toolbar, the file toolbar had nothing, so
the rail was there whether you wanted it or not.

The changes panel's private DesktopTreeToggle becomes a shared
TreeRailToggle so both toolbars render the same affordance; that also
drops the treeToggleStyle prop threaded through ChangesToolbarProps,
which recomputed exactly what the component already built internally.
The i18n keys move out of workspace.git.diff into workspace.tree, since a
shared component reaching into the git namespace would rot.

The two rails keep independent flags — the file rail in panel-store, the
changes rail in useChangesPreferences — so closing one leaves the other
alone. FileTreeToggle wires itself to the store rather than taking a
callback: the bar renders several components below FilePanel, where the
rail actually lives.

Both rails also get narrower (320 -> 260 default, 200 -> 180 minimum).
The persist version bump resets treeRailWidth on purpose: nearly every
existing install carries the old 320 default, so without the reset the
narrower rail would only ever reach new users. Anyone who dragged their
rail to a deliberate custom width loses it once.

Note that MIN_CONTENT_WIDTH still clamps the rail to
`containerWidth - 240`, so in a narrow pane the new default never
applies — that floor, not the default, is what sets the width there.

* feat(app): make the side panel an empty workspace surface

The fixed, hideable side panel keeps supporting context beside an agent without seeding content. Pane-local choices stay local, while implicit supporting opens follow a persisted routing preference.

* test(app): exercise side panel policy through its capability boundary

The browser rail journey already covers the real tree-toggle behavior. Side-panel policy tests now pass their platform capability through the public boundary instead of replacing a production module.

* test(app): expect an empty side panel after upgrade

* test(app): expect an empty first split pane

* test(app): account for the empty side panel in split retention

* feat(app): make workspace panel tabs independent

Give explicit New actions fresh tab instances, keep panel state opaque to tab management, preserve File navigation context, and stabilize uncached File transitions.

* fix(app): preserve file conflicts during preview refresh

Keep the current preview mounted for same-target reads and conversions so the editor retains its conflict observation state. Clear retained previews only when the file target changes.

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

@@ -412,7 +412,6 @@ describe("translation resources", () => {
   });
 
   it("includes workspace tab toast keys for the Batch 4J migration", () => {
-    expect(en.workspace.tabs.emptyPane).toBe("No tabs in this pane.");
     expect(en.workspace.tabs.toasts.copyFailed).toBe("Copy failed");
     expect(en.workspace.tabs.toasts.agentIdCopiedLabel).toBe("Agent ID");
     expect(en.workspace.tabs.toasts.resumeCommandCopiedLabel).toBe("resume command");
@@ -494,12 +493,12 @@ describe("translation resources", () => {
     expect(en.agentList.dateSections.recent).toBe("Recent");
     expect(en.message.attachments.imagePreviewUnavailable).toBe("Image preview unavailable.");
     expect(en.message.attachments.imagePreviewLoadFailed).toBe("Unable to load image preview.");
-    expect(en.workspace.tabs.explorer.changes).toBe("Changes");
-    expect(en.workspace.tabs.explorer.files).toBe("Files");
+    expect(en.workspace.tabs.sidePanel.changes).toBe("Changes");
+    expect(en.workspace.tabs.sidePanel.files).toBe("Files");
     expect(en.workspace.tabs.actions.maximizePane).toBe("Maximize pane");
     expect(en.workspace.tabs.actions.restorePane).toBe("Restore pane");
     expect(en.settings.shortcuts.help.toggleExplorerPaneMaximization).toBe(
-      "Toggle Explorer pane maximization",
+      "Toggle Side panel maximization",
     );
     expect(en.branchSwitcher.triggerTooltip).toBe("Switch workspace branch");
     expect(en.branchSwitcher.uncommittedTitle).toBe("Uncommitted changes");

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

@@ -553,7 +553,6 @@ export const ar: TranslationResources = {
       loading: "تحميل...",
       modified: "تغييرات غير محفوظة",
       loadingAgentTitle: "جارٍ تحميل عنوان الوكيل",
-      emptyPane: "لا توجد علامات تبويب في هذا الجزء.",
       fallback: {
         newAgent: "وكيل جديد",
         setup: "يثبت",
@@ -595,6 +594,7 @@ export const ar: TranslationResources = {
         newBrowser: "متصفح جديد",
         maximizePane: "تكبير الجزء",
         restorePane: "استعادة الجزء",
+        closePane: "إغلاق الجزء",
         exitFocusMode: "إنهاء وضع التركيز",
         splitRight: "تقسيم الجزء الأيمن",
         splitDown: "تقسيم الجزء لأسفل",
@@ -604,10 +604,10 @@ export const ar: TranslationResources = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "افتح المستكشف",
-        close: "إغلاق المستكشف",
-        toggle: "تبديل المستكشف",
+      sidePanel: {
+        open: "افتح اللوحة الجانبية",
+        close: "إغلاق اللوحة الجانبية",
+        toggle: "تبديل اللوحة الجانبية",
         changes: "التغييرات",
         files: "ملفات",
       },
@@ -710,6 +710,10 @@ export const ar: TranslationResources = {
         stopFailed: "فشل إيقاف{{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "إظهار شجرة المجلدات",
+      hideFolderTree: "إخفاء شجرة المجلدات",
+    },
     git: {
       actions: {
         moreOptions: "المزيد من الخيارات",
@@ -855,8 +859,6 @@ export const ar: TranslationResources = {
         split: "فرق جنبًا إلى جنب",
         switchToUnified: "التبديل إلى الفرق الموحد",
         switchToSplit: "التبديل إلى الفرق جنبًا إلى جنب",
-        showTreeView: "إظهار شجرة المجلدات",
-        hideTreeView: "إخفاء شجرة المجلدات",
         options: "خيارات الفرق",
         hideWhitespace: "إخفاء المسافة البيضاء",
         showWhitespace: "إظهار المسافة البيضاء",
@@ -1917,6 +1919,11 @@ export const ar: TranslationResources = {
         description: "يتم الاحتفاظ بالخطوط في المخزن المؤقت الطرفي المدمج",
         accessibilityLabel: "خطوط التمرير Terminal",
       },
+      sidePanelRouting: {
+        label: "فتح علامات التبويب المساعدة في اللوحة الجانبية",
+        description:
+          "تفتح روابط الملفات وطلبات السحب وتقدم الإعداد بجوار عملك بدلاً من الجزء المركّز عليه",
+      },
       autoExpandReasoning: {
         label: "عرض التفكير دائماً",
         description: "إظهار تفكير الوكيل وخطوات الاستدلال بشكل كامل بشكل افتراضي",
@@ -2100,11 +2107,11 @@ export const ar: TranslationResources = {
         toggleCommandCenter: "تبديل مركز القيادة",
         showKeyboardShortcuts: "إظهار اختصارات لوحة المفاتيح",
         toggleLeftSidebar: "تبديل الشريط الجانبي الأيسر",
-        toggleRightSidebar: "تبديل الشريط الجانبي الأيمن",
+        toggleRightSidebar: "تبديل اللوحة الجانبية",
         toggleBothSidebars: "تبديل كلا الشريطين الجانبيين",
         toggleSettings: "تبديل الإعدادات",
         toggleFocusMode: "تبديل وضع التركيز",
-        toggleExplorerPaneMaximization: "تبديل تكبير جزء المستكشف",
+        toggleExplorerPaneMaximization: "تبديل تكبير اللوحة الجانبية",
         cycleTheme: "موضوع الدورة",
         focusMessageInput: "التركيز على إدخال الرسالة",
         cycleAgentMode: "تبديل وضع الوكيل",

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

@@ -551,7 +551,6 @@ export const en = {
       loading: "Loading...",
       modified: "Unsaved changes",
       loadingAgentTitle: "Loading agent title",
-      emptyPane: "No tabs in this pane.",
       fallback: {
         newAgent: "New agent",
         setup: "Setup",
@@ -593,6 +592,7 @@ export const en = {
         newBrowser: "New browser",
         maximizePane: "Maximize pane",
         restorePane: "Restore pane",
+        closePane: "Close pane",
         exitFocusMode: "Exit focus mode",
         splitRight: "Split pane right",
         splitDown: "Split pane down",
@@ -602,10 +602,10 @@ export const en = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "Open explorer",
-        close: "Close explorer",
-        toggle: "Toggle explorer",
+      sidePanel: {
+        open: "Open side panel",
+        close: "Close side panel",
+        toggle: "Toggle side panel",
         changes: "Changes",
         files: "Files",
       },
@@ -706,6 +706,10 @@ export const en = {
         stopFailed: "Failed to stop {{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "Show folder tree",
+      hideFolderTree: "Hide folder tree",
+    },
     git: {
       actions: {
         moreOptions: "More options",
@@ -864,8 +868,6 @@ export const en = {
         split: "Side-by-side diff",
         switchToUnified: "Switch to unified diff",
         switchToSplit: "Switch to side-by-side diff",
-        showTreeView: "Show folder tree",
-        hideTreeView: "Hide folder tree",
         options: "Diff options",
         hideWhitespace: "Hide whitespace",
         showWhitespace: "Show whitespace",
@@ -1981,6 +1983,11 @@ export const en = {
         description: "Lines kept in the built-in terminal buffer",
         accessibilityLabel: "Terminal scrollback lines",
       },
+      sidePanelRouting: {
+        label: "Open supporting tabs in the Side panel",
+        description:
+          "File links, pull requests, and setup progress open beside your work instead of in the focused pane",
+      },
       autoExpandReasoning: {
         label: "Always expand reasoning",
         description: "Show agent thinking and chain-of-thought blocks fully expanded by default",
@@ -2164,11 +2171,11 @@ export const en = {
         toggleCommandCenter: "Toggle command center",
         showKeyboardShortcuts: "Show keyboard shortcuts",
         toggleLeftSidebar: "Toggle left sidebar",
-        toggleRightSidebar: "Toggle right sidebar",
+        toggleRightSidebar: "Toggle side panel",
         toggleBothSidebars: "Toggle both sidebars",
         toggleSettings: "Toggle settings",
         toggleFocusMode: "Toggle focus mode",
-        toggleExplorerPaneMaximization: "Toggle Explorer pane maximization",
+        toggleExplorerPaneMaximization: "Toggle Side panel maximization",
         cycleTheme: "Cycle theme",
         focusMessageInput: "Focus message input",
         cycleAgentMode: "Cycle agent mode",

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

@@ -557,7 +557,6 @@ export const es: TranslationResources = {
       loading: "Cargando...",
       modified: "Cambios sin guardar",
       loadingAgentTitle: "Título del agente de carga",
-      emptyPane: "No hay pestañas en este panel.",
       fallback: {
         newAgent: "Nuevo agente",
         setup: "Configuración",
@@ -600,6 +599,7 @@ export const es: TranslationResources = {
         newBrowser: "Nuevo navegador",
         maximizePane: "Maximizar panel",
         restorePane: "Restaurar panel",
+        closePane: "Cerrar panel",
         exitFocusMode: "Salir del modo de concentración",
         splitRight: "Panel dividido a la derecha",
         splitDown: "Dividir panel hacia abajo",
@@ -609,10 +609,10 @@ export const es: TranslationResources = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "Explorador abierto",
-        close: "Cerrar explorador",
-        toggle: "Alternar explorador",
+      sidePanel: {
+        open: "Abrir panel lateral",
+        close: "Cerrar panel lateral",
+        toggle: "Alternar panel lateral",
         changes: "Cambios",
         files: "Archivos",
       },
@@ -716,6 +716,10 @@ export const es: TranslationResources = {
         stopFailed: "No se pudo detener{{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "Mostrar árbol de carpetas",
+      hideFolderTree: "Ocultar árbol de carpetas",
+    },
     git: {
       actions: {
         moreOptions: "Más opciones",
@@ -886,8 +890,6 @@ export const es: TranslationResources = {
         split: "Diferencia de lado a lado",
         switchToUnified: "Cambiar a diferencia unificada",
         switchToSplit: "Cambiar a diferencia lado a lado",
-        showTreeView: "Mostrar árbol de carpetas",
-        hideTreeView: "Ocultar árbol de carpetas",
         options: "Opciones de diferencia",
         hideWhitespace: "Ocultar espacios en blanco",
         showWhitespace: "Mostrar espacios en blanco",
@@ -1966,6 +1968,11 @@ export const es: TranslationResources = {
         description: "Líneas mantenidas en el búfer de terminal incorporado",
         accessibilityLabel: "Líneas del historial de terminal",
       },
+      sidePanelRouting: {
+        label: "Abrir pestañas de apoyo en el panel lateral",
+        description:
+          "Los enlaces a archivos, las solicitudes de incorporación y el progreso de configuración se abren junto a tu trabajo en lugar del panel enfocado",
+      },
       autoExpandReasoning: {
         label: "Siempre expandir razonamiento",
         description:
@@ -2151,11 +2158,11 @@ export const es: TranslationResources = {
         toggleCommandCenter: "Alternar centro de comando",
         showKeyboardShortcuts: "Mostrar atajos de teclado",
         toggleLeftSidebar: "Alternar barra lateral izquierda",
-        toggleRightSidebar: "Alternar barra lateral derecha",
+        toggleRightSidebar: "Alternar panel lateral",
         toggleBothSidebars: "Alternar ambas barras laterales",
         toggleSettings: "Alternar configuración",
         toggleFocusMode: "Alternar modo de enfoque",
-        toggleExplorerPaneMaximization: "Alternar maximización del panel Explorador",
+        toggleExplorerPaneMaximization: "Alternar maximización del panel lateral",
         cycleTheme: "Tema del ciclo",
         focusMessageInput: "Entrada de mensaje de enfoque",
         cycleAgentMode: "Alternar modo del agente",

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

@@ -557,7 +557,6 @@ export const fr: TranslationResources = {
       loading: "Chargement...",
       modified: "Modifications non enregistrées",
       loadingAgentTitle: "Titre d'agent de chargement",
-      emptyPane: "Aucun onglet dans ce volet.",
       fallback: {
         newAgent: "Nouvel agent",
         setup: "Installation",
@@ -600,6 +599,7 @@ export const fr: TranslationResources = {
         newBrowser: "Nouveau navigateur",
         maximizePane: "Agrandir le volet",
         restorePane: "Restaurer le volet",
+        closePane: "Fermer le volet",
         exitFocusMode: "Quitter le mode concentration",
         splitRight: "Volet divisé à droite",
         splitDown: "Diviser le volet vers le bas",
@@ -609,10 +609,10 @@ export const fr: TranslationResources = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "Ouvrir l'explorateur",
-        close: "Fermer l'explorateur",
-        toggle: "Basculer l'explorateur",
+      sidePanel: {
+        open: "Ouvrir le panneau latéral",
+        close: "Fermer le panneau latéral",
+        toggle: "Basculer le panneau latéral",
         changes: "Changements",
         files: "Fichiers",
       },
@@ -716,6 +716,10 @@ export const fr: TranslationResources = {
         stopFailed: "Échec de l'arrêt de{{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "Afficher l'arborescence des dossiers",
+      hideFolderTree: "Masquer l'arborescence des dossiers",
+    },
     git: {
       actions: {
         moreOptions: "Plus d'options",
@@ -885,8 +889,6 @@ export const fr: TranslationResources = {
         split: "Différent côte à côte",
         switchToUnified: "Passer au diff unifié",
         switchToSplit: "Passer au diff côte à côte",
-        showTreeView: "Afficher l'arborescence des dossiers",
-        hideTreeView: "Masquer l'arborescence des dossiers",
         options: "Options du diff",
         hideWhitespace: "Masquer les espaces",
         showWhitespace: "Afficher les espaces",
@@ -1970,6 +1972,11 @@ export const fr: TranslationResources = {
         description: "Lignes conservées dans le tampon du terminal intégré",
         accessibilityLabel: "Lignes de défilementTerminal",
       },
+      sidePanelRouting: {
+        label: "Ouvrir les onglets d'appoint dans le panneau latéral",
+        description:
+          "Les liens de fichiers, les pull requests et la progression de la configuration s'ouvrent à côté de votre travail plutôt que dans le volet actif",
+      },
       autoExpandReasoning: {
         label: "Toujours afficher le raisonnement",
         description: "Afficher le raisonnement de l'agent entièrement développé par défaut",
@@ -2155,11 +2162,11 @@ export const fr: TranslationResources = {
         toggleCommandCenter: "Basculer le centre de commande",
         showKeyboardShortcuts: "Afficher les raccourcis clavier",
         toggleLeftSidebar: "Basculer la barre latérale gauche",
-        toggleRightSidebar: "Basculer la barre latérale droite",
+        toggleRightSidebar: "Basculer le panneau latéral",
         toggleBothSidebars: "Basculer les deux barres latérales",
         toggleSettings: "Basculer les paramètres",
         toggleFocusMode: "Basculer le mode de mise au point",
-        toggleExplorerPaneMaximization: "Basculer l’agrandissement du volet Explorateur",
+        toggleExplorerPaneMaximization: "Basculer l’agrandissement du panneau latéral",
         cycleTheme: "Thème du cycle",
         focusMessageInput: "Saisie du message de focus",
         cycleAgentMode: "Parcourir les modes de l'agent",

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

@@ -557,7 +557,6 @@ export const ja: TranslationResources = {
       loading: "読み込み中...",
       modified: "未保存の変更",
       loadingAgentTitle: "エージェントタイトルを読み込み中",
-      emptyPane: "このペインにタブがありません。",
       fallback: {
         newAgent: "新しいエージェント",
         setup: "セットアップ",
@@ -600,6 +599,7 @@ export const ja: TranslationResources = {
         newBrowser: "新しいブラウザ",
         maximizePane: "ペインを最大化",
         restorePane: "ペインを元に戻す",
+        closePane: "ペインを閉じる",
         exitFocusMode: "フォーカスモードを終了",
         splitRight: "右にペインを分割",
         splitDown: "下にペインを分割",
@@ -609,10 +609,10 @@ export const ja: TranslationResources = {
         terminalProfilesMenu: "ターミナルプロファイル",
         editTerminalProfiles: "プロファイルを編集…",
       },
-      explorer: {
-        open: "エクスプローラーを開く",
-        close: "エクスプローラーを閉じる",
-        toggle: "エクスプローラーを切り替え",
+      sidePanel: {
+        open: "サイドパネルを開く",
+        close: "サイドパネルを閉じる",
+        toggle: "サイドパネルを切り替え",
         changes: "変更",
         files: "ファイル",
       },
@@ -712,6 +712,10 @@ export const ja: TranslationResources = {
         stopFailed: "{{scriptName}}の停止に失敗しました",
       },
     },
+    tree: {
+      showFolderTree: "フォルダツリーを表示",
+      hideFolderTree: "フォルダツリーを非表示",
+    },
     git: {
       actions: {
         moreOptions: "その他のオプション",
@@ -866,8 +870,6 @@ export const ja: TranslationResources = {
         split: "左右比較",
         switchToUnified: "ユニファイド差分に切り替え",
         switchToSplit: "左右比較差分に切り替え",
-        showTreeView: "フォルダツリーを表示",
-        hideTreeView: "フォルダツリーを非表示",
         options: "差分オプション",
         hideWhitespace: "空白を非表示",
         showWhitespace: "空白を表示",
@@ -1934,6 +1936,11 @@ export const ja: TranslationResources = {
         description: "組み込みターミナルバッファに保持する行数",
         accessibilityLabel: "ターミナルスクロールバック行数",
       },
+      sidePanelRouting: {
+        label: "補助タブをサイドパネルで開く",
+        description:
+          "ファイルリンク、プルリクエスト、セットアップの進行状況が、フォーカス中のペインではなく作業の横に開きます",
+      },
       autoExpandReasoning: {
         label: "常に思考プロセスを展開",
         description: "デフォルトでAIのエージェント思考・推論ブロックを完全に展開して表示します",
@@ -2118,11 +2125,11 @@ export const ja: TranslationResources = {
         toggleCommandCenter: "コマンドセンターを切り替え",
         showKeyboardShortcuts: "キーボードショートカットを表示",
         toggleLeftSidebar: "左サイドバーを切り替え",
-        toggleRightSidebar: "右サイドバーを切り替え",
+        toggleRightSidebar: "サイドパネルを切り替え",
         toggleBothSidebars: "両方のサイドバーを切り替え",
         toggleSettings: "設定を切り替え",
         toggleFocusMode: "フォーカスモードを切り替え",
-        toggleExplorerPaneMaximization: "エクスプローラーペインの最大化を切り替え",
+        toggleExplorerPaneMaximization: "サイドパネルの最大化を切り替え",
         cycleTheme: "テーマを順に切り替え",
         focusMessageInput: "メッセージ入力にフォーカス",
         cycleAgentMode: "エージェントモードを順に切り替え",

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

@@ -554,7 +554,6 @@ export const ko: TranslationResources = {
       loading: "불러오는 중...",
       modified: "저장되지 않은 변경사항",
       loadingAgentTitle: "에이전트 제목 불러오는 중",
-      emptyPane: "이 창에 탭이 없습니다.",
       fallback: {
         newAgent: "새 에이전트",
         setup: "설정",
@@ -597,6 +596,7 @@ export const ko: TranslationResources = {
         newBrowser: "새 브라우저",
         maximizePane: "창 최대화",
         restorePane: "창 복원",
+        closePane: "창 닫기",
         exitFocusMode: "집중 모드 종료",
         splitRight: "창을 오른쪽으로 분할",
         splitDown: "창을 아래로 분할",
@@ -606,10 +606,10 @@ export const ko: TranslationResources = {
         terminalProfilesMenu: "터미널 프로필",
         editTerminalProfiles: "프로필 편집…",
       },
-      explorer: {
-        open: "탐색기 열기",
-        close: "탐색기 닫기",
-        toggle: "탐색기 토글",
+      sidePanel: {
+        open: "사이드 패널 열기",
+        close: "사이드 패널 닫기",
+        toggle: "사이드 패널 토글",
         changes: "변경 사항",
         files: "파일",
       },
@@ -710,6 +710,10 @@ export const ko: TranslationResources = {
         stopFailed: "{{scriptName}}를 중지하지 못했습니다.",
       },
     },
+    tree: {
+      showFolderTree: "폴더 트리 표시",
+      hideFolderTree: "폴더 트리 숨기기",
+    },
     git: {
       actions: {
         moreOptions: "옵션 더 보기",
@@ -862,8 +866,6 @@ export const ko: TranslationResources = {
         split: "나란히 보기 diff",
         switchToUnified: "통합 diff로 전환",
         switchToSplit: "나란히 보기 diff로 전환",
-        showTreeView: "폴더 트리 표시",
-        hideTreeView: "폴더 트리 숨기기",
         options: "Diff 옵션",
         hideWhitespace: "공백 숨기기",
         showWhitespace: "공백 표시",
@@ -1928,6 +1930,11 @@ export const ko: TranslationResources = {
         description: "내장 터미널 버퍼에 보관되는 줄 수",
         accessibilityLabel: "터미널 스크롤백 줄 수",
       },
+      sidePanelRouting: {
+        label: "보조 탭을 사이드 패널에서 열기",
+        description:
+          "파일 링크, 풀 리퀘스트, 설정 진행 상황이 포커스된 창이 아니라 작업 옆에서 열립니다",
+      },
       autoExpandReasoning: {
         label: "추론 항상 펼치기",
         description: "에이전트의 사고 및 추론 블록을 기본적으로 모두 펼쳐 표시합니다.",
@@ -2111,11 +2118,11 @@ export const ko: TranslationResources = {
         toggleCommandCenter: "명령 센터 토글",
         showKeyboardShortcuts: "키보드 단축키 표시",
         toggleLeftSidebar: "왼쪽 사이드바 토글",
-        toggleRightSidebar: "오른쪽 사이드바 토글",
+        toggleRightSidebar: "사이드 패널 토글",
         toggleBothSidebars: "양쪽 사이드바 토글",
         toggleSettings: "설정 토글",
         toggleFocusMode: "집중 모드 토글",
-        toggleExplorerPaneMaximization: "탐색기 창 최대화 전환",
+        toggleExplorerPaneMaximization: "사이드 패널 최대화 전환",
         cycleTheme: "테마 순환",
         focusMessageInput: "메시지 입력란에 포커스",
         cycleAgentMode: "에이전트 모드 전환",

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

@@ -557,7 +557,6 @@ export const ptBR: TranslationResources = {
       loading: "Carregando...",
       modified: "Alterações não salvas",
       loadingAgentTitle: "Carregando título do agente",
-      emptyPane: "Nenhuma aba neste painel.",
       fallback: {
         newAgent: "Novo agente",
         setup: "Configuração",
@@ -599,6 +598,7 @@ export const ptBR: TranslationResources = {
         newBrowser: "Novo navegador",
         maximizePane: "Maximizar painel",
         restorePane: "Restaurar painel",
+        closePane: "Fechar painel",
         exitFocusMode: "Sair do modo de foco",
         splitRight: "Dividir painel à direita",
         splitDown: "Dividir painel abaixo",
@@ -608,10 +608,10 @@ export const ptBR: TranslationResources = {
         terminalProfilesMenu: "Perfis de terminal",
         editTerminalProfiles: "Editar perfis…",
       },
-      explorer: {
-        open: "Abrir explorador",
-        close: "Fechar explorador",
-        toggle: "Alternar explorador",
+      sidePanel: {
+        open: "Abrir painel lateral",
+        close: "Fechar painel lateral",
+        toggle: "Alternar painel lateral",
         changes: "Alterações",
         files: "Arquivos",
       },
@@ -713,6 +713,10 @@ export const ptBR: TranslationResources = {
         stopFailed: "Falha ao parar {{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "Mostrar árvore de pastas",
+      hideFolderTree: "Ocultar árvore de pastas",
+    },
     git: {
       actions: {
         moreOptions: "Mais opções",
@@ -877,8 +881,6 @@ export const ptBR: TranslationResources = {
         split: "Diff lado a lado",
         switchToUnified: "Alternar para diff unificado",
         switchToSplit: "Alternar para diff lado a lado",
-        showTreeView: "Mostrar árvore de pastas",
-        hideTreeView: "Ocultar árvore de pastas",
         options: "Opções do diff",
         hideWhitespace: "Ocultar espaços em branco",
         showWhitespace: "Mostrar espaços em branco",
@@ -1950,6 +1952,11 @@ export const ptBR: TranslationResources = {
         description: "Linhas mantidas no buffer do terminal integrado",
         accessibilityLabel: "Linhas do scrollback do terminal",
       },
+      sidePanelRouting: {
+        label: "Abrir abas de apoio no painel lateral",
+        description:
+          "Links de arquivo, pull requests e progresso da configuração abrem ao lado do seu trabalho em vez do painel em foco",
+      },
       autoExpandReasoning: {
         label: "Sempre expandir raciocínio",
         description:
@@ -2134,11 +2141,11 @@ export const ptBR: TranslationResources = {
         toggleCommandCenter: "Alternar central de comandos",
         showKeyboardShortcuts: "Mostrar atalhos de teclado",
         toggleLeftSidebar: "Alternar barra lateral esquerda",
-        toggleRightSidebar: "Alternar barra lateral direita",
+        toggleRightSidebar: "Alternar painel lateral",
         toggleBothSidebars: "Alternar ambas as barras laterais",
         toggleSettings: "Alternar Configurações",
         toggleFocusMode: "Alternar modo de foco",
-        toggleExplorerPaneMaximization: "Alternar maximização do painel Explorador",
+        toggleExplorerPaneMaximization: "Alternar maximização do painel lateral",
         cycleTheme: "Alternar tema",
         focusMessageInput: "Focar entrada de mensagem",
         cycleAgentMode: "Alternar modo do agente",

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

@@ -557,7 +557,6 @@ export const ru: TranslationResources = {
       loading: "Загрузка...",
       modified: "Несохранённые изменения",
       loadingAgentTitle: "Название агента загрузки",
-      emptyPane: "На этой панели нет вкладок.",
       fallback: {
         newAgent: "Новый агент",
         setup: "Настраивать",
@@ -599,6 +598,7 @@ export const ru: TranslationResources = {
         newBrowser: "Новый браузер",
         maximizePane: "Развернуть панель",
         restorePane: "Восстановить панель",
+        closePane: "Закрыть панель",
         exitFocusMode: "Выйти из режима фокусировки",
         splitRight: "Разделить панель справа",
         splitDown: "Разделить панель вниз",
@@ -608,10 +608,10 @@ export const ru: TranslationResources = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "Открыть проводник",
-        close: "Закрыть проводник",
-        toggle: "Переключить проводник",
+      sidePanel: {
+        open: "Открыть боковую панель",
+        close: "Закрыть боковую панель",
+        toggle: "Переключить боковую панель",
         changes: "Изменения",
         files: "Файлы",
       },
@@ -715,6 +715,10 @@ export const ru: TranslationResources = {
         stopFailed: "Не удалось остановить{{scriptName}}",
       },
     },
+    tree: {
+      showFolderTree: "Показать дерево папок",
+      hideFolderTree: "Скрыть дерево папок",
+    },
     git: {
       actions: {
         moreOptions: "Больше возможностей",
@@ -877,8 +881,6 @@ export const ru: TranslationResources = {
         split: "Параллельная разница",
         switchToUnified: "Переключить на объединенный diff",
         switchToSplit: "Переключить на diff рядом",
-        showTreeView: "Показать дерево папок",
-        hideTreeView: "Скрыть дерево папок",
         options: "Параметры diff",
         hideWhitespace: "Скрыть пробелы",
         showWhitespace: "Показать пробелы",
@@ -1953,6 +1955,11 @@ export const ru: TranslationResources = {
         description: "Строки, хранящиеся во встроенном буфере терминала.",
         accessibilityLabel: "Линии прокрутки Terminal",
       },
+      sidePanelRouting: {
+        label: "Открывать вспомогательные вкладки в боковой панели",
+        description:
+          "Ссылки на файлы, пул-реквесты и ход настройки открываются рядом с вашей работой, а не в активной панели",
+      },
       autoExpandReasoning: {
         label: "Всегда разворачивать размышления",
         description:
@@ -2140,11 +2147,11 @@ export const ru: TranslationResources = {
         toggleCommandCenter: "Переключить командный центр",
         showKeyboardShortcuts: "Показать сочетания клавиш",
         toggleLeftSidebar: "Переключить левую боковую панель",
-        toggleRightSidebar: "Переключить правую боковую панель",
+        toggleRightSidebar: "Переключить боковую панель",
         toggleBothSidebars: "Переключить обе боковые панели",
         toggleSettings: "Переключить настройки",
         toggleFocusMode: "Переключить режим фокусировки",
-        toggleExplorerPaneMaximization: "Переключить разворачивание панели Проводника",
+        toggleExplorerPaneMaximization: "Переключить разворачивание боковой панели",
         cycleTheme: "Циклическая тема",
         focusMessageInput: "Фокус ввода сообщения",
         cycleAgentMode: "Переключить режим агента",

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

@@ -553,7 +553,6 @@ export const zhCN: TranslationResources = {
       loading: "正在加载...",
       modified: "未保存的更改",
       loadingAgentTitle: "正在加载 Agent 标题",
-      emptyPane: "此窗格中没有标签。",
       fallback: {
         newAgent: "新建 Agent",
         setup: "Setup",
@@ -595,6 +594,7 @@ export const zhCN: TranslationResources = {
         newBrowser: "新建浏览器",
         maximizePane: "最大化窗格",
         restorePane: "还原窗格",
+        closePane: "关闭窗格",
         exitFocusMode: "退出专注模式",
         splitRight: "向右拆分窗格",
         splitDown: "向下拆分窗格",
@@ -604,10 +604,10 @@ export const zhCN: TranslationResources = {
         terminalProfilesMenu: "Terminal profiles",
         editTerminalProfiles: "Edit profiles…",
       },
-      explorer: {
-        open: "打开 explorer",
-        close: "关闭 explorer",
-        toggle: "切换 explorer",
+      sidePanel: {
+        open: "打开侧边面板",
+        close: "关闭侧边面板",
+        toggle: "切换侧边面板",
         changes: "变更",
         files: "文件",
       },
@@ -706,6 +706,10 @@ export const zhCN: TranslationResources = {
         stopFailed: "停止 {{scriptName}} 失败",
       },
     },
+    tree: {
+      showFolderTree: "显示文件夹树",
+      hideFolderTree: "隐藏文件夹树",
+    },
     git: {
       actions: {
         moreOptions: "更多选项",
@@ -847,8 +851,6 @@ export const zhCN: TranslationResources = {
         split: "Side-by-side diff",
         switchToUnified: "切换到统一差异视图",
         switchToSplit: "切换到并排差异视图",
-        showTreeView: "显示文件夹树",
-        hideTreeView: "隐藏文件夹树",
         options: "Diff 选项",
         hideWhitespace: "隐藏空白差异",
         showWhitespace: "显示空白差异",
@@ -1894,6 +1896,10 @@ export const zhCN: TranslationResources = {
         description: "内置终端缓冲区保留的行数",
         accessibilityLabel: "终端回滚行数",
       },
+      sidePanelRouting: {
+        label: "在侧边面板中打开辅助标签页",
+        description: "文件链接、拉取请求和设置进度会在你的工作旁边打开，而不是在聚焦的窗格中",
+      },
       autoExpandReasoning: {
         label: "始终展开推理过程",
         description: "默认情况下完全展开 AI 的思考和推理过程",
@@ -2076,11 +2082,11 @@ export const zhCN: TranslationResources = {
         toggleCommandCenter: "切换命令中心",
         showKeyboardShortcuts: "显示键盘快捷键",
         toggleLeftSidebar: "切换左侧边栏",
-        toggleRightSidebar: "切换右侧边栏",
+        toggleRightSidebar: "切换侧边面板",
         toggleBothSidebars: "切换两侧边栏",
         toggleSettings: "切换设置",
         toggleFocusMode: "切换专注模式",
-        toggleExplorerPaneMaximization: "切换资源管理器窗格最大化",
+        toggleExplorerPaneMaximization: "切换侧边面板最大化",
         cycleTheme: "循环切换主题",
         focusMessageInput: "聚焦消息输入框",
         cycleAgentMode: "循环切换代理模式",