[Bug] Keyboard shortcuts don't work when Chinese IME is active #24192

Describe the bug

All keyboard shortcuts stop working when using a Chinese Input Method Editor (IME). The shortcuts only work after switching to an English keyboard layout (Win+Space).

This affects all shortcuts in the OpenCode desktop application on Windows.

To Reproduce

Steps to reproduce the behavior:

1. Open OpenCode desktop app on Windows
2. Switch to Chinese IME (e.g., Microsoft Pinyin, Sogou, or any CJK input method)
3. Try any keyboard shortcut (e.g., Ctrl+K, Ctrl+Enter, etc.)
4. Observe that shortcuts are not triggered

Expected behavior

Keyboard shortcuts should work regardless of the active input method, similar to how VS Code, Slack, and other Electron/Tauri apps handle this.

Environment

• OS: Windows 11
• OpenCode Version: 1.14.23
• Input Method: Chinese IME (Microsoft Pinyin / Sogou / etc.)
• App Type: Desktop (BETA)

Additional context

This is a known issue in web-based desktop apps. The root cause is that IME composition events (compositionstart/compositionend) intercept keyboard events before the application's shortcut handlers can process them.

Technical analysis

The fix typically involves checking event.isComposing or event.keyCode === 229 in keyboard event handlers:

\\ ypescript
// Suggested fix:
document.addEventListener('keydown', (e) => {
// Skip if IME composition is in progress
if (e.isComposing || e.keyCode === 229) return;

if (e.ctrlKey && e.key === 'k') {
openCommandPalette();
}
});
\\

Additionally, compositionend should use setTimeout(0) to delay resetting the composing state, to handle the race condition where compositionend and keydown fire in the same event loop:

\\ ypescript
let isComposing = false;

element.addEventListener('compositionstart', () => { isComposing = true; });
element.addEventListener('compositionend', () => {
setTimeout(() => { isComposing = false; }, 0);
});
\\

References

This pattern is used by:

• VS Code
• Plane (PR docs: add opencode-antigravity-auth-remix to ecosystem #8893)
• Multiple other Electron/Tauri apps

Impact

This significantly affects users who primarily use CJK input methods, as they must constantly switch keyboard layouts to use any shortcut.