Feature Request: Allow configuring session title language (e.g., Korean)

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Feature Request

Summary:
Allow users to configure the language used for automatically generated session titles in Claude Code.

Current Behavior

Session titles are always generated in English, regardless of the conversation language or CLAUDE.md instructions.

Expected Behavior

Session titles should either:

1. Follow the language of the conversation, or
2. Respect a configurable language setting in settings.json or CLAUDE.md

Use Case

Non-English users find it inconsistent — Claude.ai Chat generates titles in their native language, but Claude Code always uses English.

Korean example:

• Chat tab: 국소배기 관련법 및 환기, 엑셀 셀 선택 시 행렬 하이라이트
• Code tab: Organize session data in Excel, Review safety operation procedure

Proposed Solution

Add a sessionTitleLanguage option to settings.json, or honor CLAUDE.md instructions for title language.

Environment

• OS: Windows 11
• Claude Code: latest

Proposed Solution

settings.json에 sessionTitleLanguage 옵션을 추가하거나, CLAUDE.md의 언어 지시를 세션 제목 생성 시에도 반영해 주세요.

예시:
{
"sessionTitleLanguage": "ko"
}

또는 CLAUDE.md에 작성한 "세션 제목은 한국어로 작성할 것" 같은 지시가 실제로 동작하도록 지원해 주세요.

Alternative Solutions

현재 CLAUDE.md에 한국어 제목 지시를 추가해 보았지만 효과가 없었습니다.
Claude.ai Chat 탭처럼 대화 언어를 자동 감지하여 제목을 생성하는 방식도 좋은 대안입니다.

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_