## Problem
When typing in Chinese (or other IME-based languages like
Japanese/Korean), pressing Enter to select a character from the IME
candidate list would incorrectly submit the message instead of
confirming the character selection.
## Solution
Added IME composition state detection in the `handleKeydown` function in
`ChatForm.svelte`:
- Check `event.isComposing` to detect active IME composition
- Fallback to `event.keyCode === 229` for broader browser compatibility
- Return early when IME is active, allowing normal character selection
## Changes
- Modified `dashboard/src/lib/components/ChatForm.svelte`
- Added IME composition check before Enter key handling
Co-authored-by: Ricky Chen <rickychen@Rickys-MacBook-Pro.local>
844bcc7ce6
