hermes - 💡(How to fix) Fix Desktop app: Chinese IME input breaks composer - text not synced, Enter doesn't send

Bug Description

When using Chinese IME (Input Method Editor) in the Hermes desktop app (Electron), the composer input breaks:

1. Voice button stays visible even after typing text (send button doesn't appear)
2. Enter key doesn't submit the message
3. Text gets truncated - only characters before IME composition are sent

Root Cause

In apps/desktop/src/app/chat/composer/index.tsx, the composingRef mechanism for handling IME composition appears to get stuck:

// Line 156
const composingRef = useRef(false) // true during IME composition (CJK input)

// Line 556 - handleEditorInput
if (composingRef.current) {
  return  // Skips draft update!
}

// Lines 1211-1216 - composition event handlers
onCompositionEnd={() => {
  composingRef.current = false
}}
onCompositionStart={() => {
  composingRef.current = true
}}

When composingRef.current is stuck at true:

• handleEditorInput skips updating draftRef.current and aui.composer().setText()
• hasComposerPayload remains false (draft is empty)
• Voice button shows instead of send button
• Enter doesn't trigger submitDraft() because !hasComposerPayload is true
• Only pre-composition text (if any) gets sent

Steps to Reproduce

1. Open Hermes desktop app on Windows
2. Switch to Chinese IME (Microsoft Pinyin, Sogou, etc.)
3. Type Chinese characters using pinyin
4. Try to press Enter or look for the send button

Expected Behavior

• After IME composition completes, draft should update with composed text
• Send button should appear
• Enter should submit the message

Environment

• OS: Windows 10/11
• Hermes Desktop App (Electron)
• Chinese IME (Microsoft Pinyin, Sogou, etc.)
• Electron version: 33.x

Suggested Fix

The compositionend event handler should also trigger a draft sync:

onCompositionEnd={(e) => {
  composingRef.current = false
  // Force sync the composed text to draft state
  const editor = e.currentTarget
  const nextDraft = composerPlainText(editor)
  if (nextDraft !== draftRef.current) {
    draftRef.current = nextDraft
    aui.composer().setText(nextDraft)
  }
}}

Or add a fallback in handleEditorInput that checks if composition has actually ended before skipping.