feat: add tab:close keyboard shortcut

Add Ctrl+W (Linux/Windows) and Cmd+W (Mac) shortcuts to close tabs.

Changes:
- Add tab:close command to app/commands.ts
- Add keybinding to all platform keymaps (darwin, linux, win32)
- Add RPC handler in lib/index.tsx to close active tab

Closes #3548

Author: nKOxxx

app/commands.ts

@@ -27,6 +27,9 @@ const commands: Record<string, (focusedWindow?: BrowserWindow) => void> = {
   'pane:close': (focusedWindow) => {
     focusedWindow?.rpc.emit('termgroup close req');
   },
+  'tab:close': (focusedWindow) => {
+    focusedWindow?.rpc.emit('tab close req');
+  },
   'window:preferences': () => {
     void openConfig();
   },

app/keymaps/darwin.json

@@ -27,6 +27,7 @@
     "command+alt+left",
     "ctrl+shift+tab"
   ],
+  "tab:close": "command+w",
   "tab:jump:prefix": "command",
   "pane:next": "command+]",
   "pane:prev": "command+[",

app/keymaps/linux.json

@@ -25,6 +25,7 @@
     "ctrl+alt+left",
     "ctrl+shift+tab"
   ],
+  "tab:close": "ctrl+w",
   "tab:jump:prefix": "ctrl",
   "pane:next": "ctrl+pageup",
   "pane:prev": "ctrl+pagedown",

app/keymaps/win32.json

@@ -22,6 +22,7 @@
   "tab:prev": [
     "ctrl+shift+tab"
   ],
+  "tab:close": "ctrl+w",
   "tab:jump:prefix": "ctrl",
   "pane:next": "ctrl+pageup",
   "pane:prev": "ctrl+pagedown",

lib/index.tsx

@@ -10,6 +10,7 @@ import type {configOptions} from '../typings/config';
 import {loadConfig, reloadConfig} from './actions/config';
 import init from './actions/index';
 import {addNotificationMessage} from './actions/notifications';
+import * as headerActions from './actions/header';
 import * as sessionActions from './actions/sessions';
 import * as termGroupActions from './actions/term-groups';
 import * as uiActions from './actions/ui';
@@ -97,6 +98,10 @@ rpc.on('termgroup close req', () => {
   store_.dispatch(termGroupActions.exitActiveTermGroup());
 });
 
+rpc.on('tab close req', () => {
+  store_.dispatch(headerActions.closeTab(store_.getState().sessions.activeUid));
+});
+
 rpc.on('session clear req', () => {
   store_.dispatch(sessionActions.clearActiveSession());
 });