yhk1038

Add a new UI language/locale to the claude-code-gui webview i18n system, or extend/verify an existing one. Walks a contributor (or agent) through creating the per-namespace translation JSON files, registering the locale, and verifying parity — consistently with how the shipped locales are structured. Use when someone wants to translate the UI into a new language, add a locale, or contribute translations. Trigger on: 언어 추가, 로케일 추가, 새 언어, 번역 추가, 번역 기여, add language, add locale, new language, translate the UI, contribute a translation, i18n locale.

Pre-PR review checklist for the claude-code-gui-jetbrains project. Verifies a change is ready to open a pull request against main — rebased onto the latest main, feature docs written for feature PRs, no marketplace-forbidden Internal/ Deprecated JetBrains APIs, all three test layers passing, and the project's core principles (CLI equivalence, original-data preservation, consistent naming) respected. Use before opening or updating a PR. Trigger on: PR 올리기 전, PR 전 검토, 기여 전 체크, 피알 검토, pre-PR, PR 준비 됐어?, open a PR, ready for PR, PR checklist, contribution check.