[Bug] Unicode handling error with Korean characters in API responses

Bug Description
Korean - Unicode error, only Anthropic patch needs.

Environment Info

• Platform: linux
• Terminal: wsl-Ubuntu-24.04
• Version: 2.0.76
• Feedback ID: b80c9688-81e4-4225-ad28-3a22c5c0a003

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /home/kogh/.local/share/claude/versions/2.0.76 (expected in multi-process scenarios)\n    at W3$ (/$bunfs/root/claude:2427:2165)\n    at TTA (/$bunfs/root/claude:2427:1885)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-03T04:13:59.892Z"}]