fix: intercept Ctrl+B and app shortcuts in capture phase when terminal is focused

src/renderer/js/app.js

@@ -217,17 +217,21 @@ class TerminalApp {
   }
 
   initKeyboardShortcuts() {
-    window.addEventListener('keydown', (e) => {
+    window.addEventListener(
+      'keydown',
+      (e) => {
         // Ctrl+Shift+P 或 F1: 命令面板
         if ((e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'p') || e.key === 'F1') {
           e.preventDefault();
+          e.stopPropagation();
           this.commandPalette.toggle();
           return;
         }
 
         // Ctrl+B: 切换左侧工作区侧边栏
-      if (e.ctrlKey && e.key.toLowerCase() === 'b') {
+        if (e.ctrlKey && !e.shiftKey && !e.altKey && e.key.toLowerCase() === 'b') {
           e.preventDefault();
+          e.stopPropagation();
           this.workspaceManager?.toggleSidebar();
           return;
         }
@@ -235,6 +239,7 @@ class TerminalApp {
         // Ctrl+Shift+T: 新建当前工作区标签页
         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 't') {
           e.preventDefault();
+          e.stopPropagation();
           const activeWs = this.workspaceManager ? this.workspaceManager.getActiveWorkspace() : null;
           const spawnOpts = this.workspaceManager ? this.workspaceManager.getSpawnOptions(activeWs?.id) : {};
           this.tabManager.createTab({
@@ -250,6 +255,7 @@ class TerminalApp {
         // Ctrl+Shift+W: 关闭窗格
         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'w') {
           e.preventDefault();
+          e.stopPropagation();
           const tab = this.tabManager.getActiveTab();
           if (tab && tab.splitTree.activeTerminal) {
             tab.splitTree.closeTerminal(tab.splitTree.activeTerminal.id);
@@ -260,6 +266,7 @@ class TerminalApp {
         // Ctrl+Shift+E: 水平分屏 (左右)
         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'e') {
           e.preventDefault();
+          e.stopPropagation();
           const tab = this.tabManager.getActiveTab();
           if (tab) tab.splitTree.splitCurrent('horizontal');
           return;
@@ -268,6 +275,7 @@ class TerminalApp {
         // Ctrl+Shift+O: 垂直分屏 (上下)
         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'o') {
           e.preventDefault();
+          e.stopPropagation();
           const tab = this.tabManager.getActiveTab();
           if (tab) tab.splitTree.splitCurrent('vertical');
           return;
@@ -276,6 +284,7 @@ class TerminalApp {
         // Ctrl+Shift+F: 搜索
         if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === 'f') {
           e.preventDefault();
+          e.stopPropagation();
           this.toggleSearch();
           return;
         }
@@ -283,6 +292,7 @@ class TerminalApp {
         // Ctrl+,: 设置
         if (e.ctrlKey && e.key === ',') {
           e.preventDefault();
+          e.stopPropagation();
           this.settings.open();
           return;
         }
@@ -290,6 +300,7 @@ class TerminalApp {
         // Ctrl+Tab / Ctrl+Shift+Tab: 标签页切换
         if (e.ctrlKey && e.key === 'Tab') {
           e.preventDefault();
+          e.stopPropagation();
           if (e.shiftKey) {
             this.tabManager.prevTab();
           } else {
@@ -301,13 +312,16 @@ class TerminalApp {
         // Alt+1 .. Alt+9: 快速直达标签页
         if (e.altKey && e.key >= '1' && e.key <= '9') {
           e.preventDefault();
+          e.stopPropagation();
           const index = parseInt(e.key, 10) - 1;
           const ids = Array.from(this.tabManager.tabs.keys());
           if (ids[index]) {
             this.tabManager.switchTab(ids[index]);
           }
         }
-    });
+      },
+      true // 启用捕获阶段，确保终端即使在聚焦/输入状态下应用级快捷键也能被优先拦截响应
+    );
   }
 
   async initStatusBar() {

src/renderer/js/terminal-view.js

@@ -75,6 +75,14 @@ export class TerminalView {
       console.warn('WebGL addon not supported, fallback to default Canvas renderer:', e);
     }
 
+    // 自定义按键过滤：允许应用级全局快捷键（如 Ctrl+B 切换侧边栏）穿透
+    this.xterm.attachCustomKeyEventHandler((event) => {
+      if (event.ctrlKey && !event.shiftKey && !event.altKey && event.key.toLowerCase() === 'b') {
+        return false;
+      }
+      return true;
+    });
+
     // 监听输入
     this.xterm.onData((data) => {
       window.terminalAPI.writePty(this.id, data);