Introduce compatibility layers and runtime detection for older Memos API variants (v0.18/v0.19/v0.20/v0.21/v0.23 and older). Added js/compat/memosApi.v023.js and js/compat/memosApi.v1.js to provide filter building, listing, upload and resource helpers for legacy endpoints. Updated js/oper.js to track apiFlavor, probe/detect flavor on save, and to adapt uploads, deletes, tag listing, search and preview image hydration to the appropriate API flavor (including buildV1ResourceStreamUrl, normalizeUnixTimeToMs, getMemoUid and other helpers). Also updated user-facing strings and README to reflect broader compatibility (locales and README changes) and minor UI/manifest popup adjustments. These changes enable the extension to work with a wider range of Memos server versions while preserving existing behavior for modern endpoints.
Introduce a runtime UI language switcher and add Japanese/Korean locale support. Added _locales/ja and _locales/ko messages, updated en and zh_CN message files with new language-related keys and sendImage label. Implemented dynamic i18n handling: new i18n.js supports override messages, persistent uiLanguage in storage, and emits i18n:changed; background.js now loads override locales, updates context menu titles and listens for storage changes. Integrated dayjs locales (js/ja.js, js/ko.js) and made oper.js use a unified msg() helper and react to language changes. Added language selector UI in popup.html and styling in css/main.css.
jonny