[FEATURE] Permission dialog UI should support localization (currently English-only)

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

Summary

The permission dialogs (e.g., "Allow write to ...?", "Allow Bash command?") are always displayed in English, even when the system language or VS Code display language is set to another language (e.g., Japanese).

Expected behavior

The permission dialog UI should respect the user's locale and display in their language.

Current behavior

All permission dialogs are hardcoded in English regardless of system/VS Code language settings.

Environment

• OS: Windows 11
• VS Code Extension version: (your version)
• System language: Japanese

Proposed Solution

Expected behavior

The permission dialog UI should respect the user's locale and display in their language.

Alternative Solutions

Current behavior

All permission dialogs are hardcoded in English regardless of system/VS Code language settings.

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

Environment

• OS: Windows 11
• VS Code Extension version: (your version)
• System language: Japanese

Additional Context

_No response_