feat: Warn when binding browser-reserved shortcuts (#9406)

## Summary

Show a non-blocking warning in the keybinding edit dialog when users try
to bind shortcuts that browsers intercept (e.g. Ctrl+T, Ctrl+W, F12).

## Changes

- **What**: Add `RESERVED_BY_BROWSER` set of known browser-intercepted
shortcuts, `isBrowserReserved` getter on `KeyComboImpl`, and a warning
`<Message>` in the keybinding edit dialog. Users can still save the
binding.

## Review Focus

Whether the list of browser-reserved shortcuts is comprehensive enough,
and whether a non-blocking warning (vs blocking) is the right UX choice.

## Before


https://github.com/user-attachments/assets/5abfc062-5ed1-4fcd-b394-ff98221d82a8

## After



https://github.com/user-attachments/assets/12a49e24-051f-4579-894a-164dbf1cb7b7


Fixes #1087

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9406-feat-Warn-when-binding-browser-reserved-shortcuts-31a6d73d36508162a021e88ab76914f6)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Kelly Yang <124ykl@gmail.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>
Co-authored-by: jaeone94 <89377375+jaeone94@users.noreply.github.com>
Co-authored-by: Benjamin Lu <benjaminlu1107@gmail.com>
Co-authored-by: Comfy Org PR Bot <snomiao+comfy-pr@gmail.com>
Co-authored-by: christian-byrne <72887196+christian-byrne@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: AustinMroz <austin@comfy.org>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Terry Jia <terryjia88@gmail.com>
Co-authored-by: Alexander Brown <DrJKL0424@gmail.com>
Co-authored-by: Dante <bunggl@naver.com>
Co-authored-by: Deep Mehta <42841935+deepme987@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: Jin Yi <jin12cc@gmail.com>
Co-authored-by: Yourz <crazilou@vip.qq.com>
Co-authored-by: pythongosssss <125205205+pythongosssss@users.noreply.github.com>

src/platform/keybindings/keyCombo.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest'
+
+import { KeyComboImpl } from './keyCombo'
+
+describe('KeyComboImpl', () => {
+  describe('isBrowserReserved', () => {
+    it.each([
+      { key: 't', ctrl: true, label: 'Ctrl + t' },
+      { key: 'w', ctrl: true, label: 'Ctrl + w' },
+      { key: 'F12', label: 'F12' },
+      { key: 'n', ctrl: true, shift: true, label: 'Ctrl + Shift + n' },
+      { key: 'r', ctrl: true, label: 'Ctrl + r' },
+      { key: 'F5', label: 'F5' }
+    ])('returns true for $label', ({ key, ctrl, shift }) => {
+      const combo = new KeyComboImpl({
+        key,
+        ctrl: ctrl ?? false,
+        alt: false,
+        shift: shift ?? false
+      })
+      expect(combo.isBrowserReserved).toBe(true)
+    })
+
+    it.each([
+      { key: 'k', ctrl: true, label: 'Ctrl + k' },
+      { key: 's', alt: true, label: 'Alt + s' },
+      { key: 'z', ctrl: true, label: 'Ctrl + z' },
+      { key: 'F6', label: 'F6' }
+    ])('returns false for $label', ({ key, ctrl, alt }) => {
+      const combo = new KeyComboImpl({
+        key,
+        ctrl: ctrl ?? false,
+        alt: alt ?? false,
+        shift: false
+      })
+      expect(combo.isBrowserReserved).toBe(false)
+    })
+  })
+})

src/platform/keybindings/keyCombo.ts

@@ -1,6 +1,6 @@
 import { toRaw } from 'vue'
 
-import { RESERVED_BY_TEXT_INPUT } from './reserved'
+import { RESERVED_BY_BROWSER, RESERVED_BY_TEXT_INPUT } from './reserved'
 import type { KeyCombo } from './types'
 
 export class KeyComboImpl implements KeyCombo {
@@ -61,11 +61,15 @@ export class KeyComboImpl implements KeyCombo {
     return this.shift && this.modifierCount === 1
   }
 
+  get isBrowserReserved(): boolean {
+    return RESERVED_BY_BROWSER.has(toNormalizedString(this))
+  }
+
   get isReservedByTextInput(): boolean {
     return (
       !this.hasModifier ||
       this.isShiftOnly ||
-      RESERVED_BY_TEXT_INPUT.has(this.toString())
+      RESERVED_BY_TEXT_INPUT.has(toNormalizedString(this))
     )
   }
 
@@ -84,3 +88,12 @@ export class KeyComboImpl implements KeyCombo {
     return sequences
   }
 }
+
+function toNormalizedString(combo: KeyComboImpl): string {
+  const sequences: string[] = []
+  if (combo.ctrl) sequences.push('Ctrl')
+  if (combo.alt) sequences.push('Alt')
+  if (combo.shift) sequences.push('Shift')
+  sequences.push(combo.key.length === 1 ? combo.key.toLowerCase() : combo.key)
+  return sequences.join(' + ')
+}

src/platform/keybindings/reserved.ts

@@ -1,3 +1,28 @@
+export const RESERVED_BY_BROWSER = new Set([
+  'Ctrl + t', // New tab (all browsers)
+  'Ctrl + w', // Close tab (all browsers)
+  'Ctrl + n', // New window (all browsers)
+  'Ctrl + Shift + n', // New incognito/private window (all browsers)
+  'Ctrl + Tab', // Next tab (all browsers)
+  'Ctrl + Shift + Tab', // Previous tab (all browsers)
+  'Ctrl + Shift + Delete', // Clear browsing data (Chrome, Edge, Firefox)
+  'Ctrl + h', // History (all browsers)
+  'Ctrl + j', // Downloads (Chrome, Edge)
+  'Ctrl + d', // Bookmark current page (all browsers)
+  'Ctrl + Shift + b', // Toggle bookmarks bar (Chrome, Edge)
+  'Ctrl + Shift + o', // Bookmarks manager (Chrome, Edge)
+  'Ctrl + Shift + i', // DevTools (all browsers)
+  'Ctrl + Shift + j', // DevTools console (Chrome, Edge)
+  'F5', // Reload page (all browsers)
+  'Ctrl + F5', // Hard reload (all browsers)
+  'Ctrl + r', // Reload page (all browsers)
+  'Ctrl + Shift + r', // Hard reload (all browsers)
+  'F7', // Caret browsing (Firefox, Edge)
+  'F11', // Toggle fullscreen (all browsers)
+  'F12', // DevTools (all browsers)
+  'Alt + F4' // Close window (Windows, all browsers)
+])
+
 export const RESERVED_BY_TEXT_INPUT = new Set([
   'Ctrl + a',
   'Ctrl + c',