[Feature Request] Improve Korean input handling and IME support

Bug Description
Please improve Korean input. Seriously… You’re even opening an office in Seoul, so please support Korean input properly

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.0.55
• Feedback ID: 6121d410-14ac-49e0-b88a-e86ed03345d2

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/heeseon/.local/share/claude/versions/2.0.55 (expected in multi-process scenarios)\n    at HN0 (/$bunfs/root/claude:2667:1622)\n    at TCA (/$bunfs/root/claude:2667:1300)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-28T11:43:43.754Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/heeseon/.local/share/claude/versions/2.0.53 (expected in multi-process scenarios)\n    at HN0 (/$bunfs/root/claude:2667:1622)\n    at o2A (/$bunfs/root/claude:2665:34072)\n    at async ACA (/$bunfs/root/claude:2667:3435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-28T11:43:43.904Z"},{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/heeseon/.local/share/claude/versions/2.0.55 (expected in multi-process scenarios)\n    at HN0 (/$bunfs/root/claude:2667:1622)\n    at o2A (/$bunfs/root/claude:2665:34072)\n    at async m17 (/$bunfs/root/claude:2665:35274)\n    at async vx (/$bunfs/root/claude:2667:236)\n    at async <anonymous> (/$bunfs/root/claude:2667:12465)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-11-28T11:43:51.939Z"}]