[FEATURE] Feature Request: Localization support for permission dialogs (Japanese)

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

Permission dialogs such as "Make this edit to X?", "Yes / Yes, allow all edits this session / No" are currently hardcoded in English. It would be helpful to have these UI strings localized based on the user's locale or a language setting.

Use case:
Japanese-speaking users who configure Claude to communicate in Japanese find it inconsistent that the core permission prompts remain in English.

Proposed Solution

Suggested options:

• Follow the system locale automatically
• Allow a language preference setting in Claude Code settings

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_