Korean voice dictation missing spaces between words

Description

When using voice mode with Korean (ko) dictation language, the transcribed text has no spaces between words.

Steps to Reproduce

1. Enable voice mode: /voice
2. Set dictation language to ko (Korean)
3. Hold Space and speak in Korean
4. Release Space

Expected Behavior

Transcribed Korean text should include proper spacing between words (띄어쓰기), e.g.:

그러면 피그마 MCP를 받으면 된다는 소리야?

Actual Behavior

All words are concatenated without any spaces:

그러면은피그마MCP를받으면된다는소리야?
너가피그마MCP를설정해줘.
그런데보이스모드는원래띄어쓰기가안되는거야?

Environment

• OS: macOS (Darwin 25.2.0)
• macOS Dictation Language: 한국어(대한민국) — properly configured
• Claude Code voice dictation language: ko

Screenshot

macOS dictation settings (properly configured for Korean):

!macOS dictation settings

Notes

• English dictation works fine with proper spacing
• macOS system dictation settings are correctly set to Korean, but the issue appears to be in Claude Code's own transcription engine
• The AI can still understand the input without spaces, but readability is significantly impacted