MetalioClaw4

Maintain runtime UI i18n for xingzhi-ai-395. Use whenever adding, changing, or reviewing user-visible LVGL/UI strings (labels, buttons, tabs, dialogs, status text, format strings shown on screen). Do NOT use for ESP_LOG* messages. Ensures every new display string is added to main/i18n/catalog.json with translations for all locales (zh-CN, en-US, and future ja-JP/ko-KR…), regenerated tables, and code uses I18n::T / I18n::Tr.

After completing code changes in xingzhi-ai-395, append an entry to local-changes-summary.md at the project root. Use when implementing features, fixes, or refactors in this repo; when the user asks to record changes; or at the end of any non-trivial coding task before finishing the response.