Refresh the changelog and localized compatibility strings to reflect support for Memos 0.28.x-0.30.x, and correct the older image preview note to 0.19.x-0.23.x.
Add DE/FR/ES support across Chrome, Edge and Firefox builds: new _locales message files for de, fr, es. Include dayjs locale bundles (de.js, fr.js, es.js) and load them in popup.html. Update i18n.js to register new languages and labels, update oper.js to apply the corresponding dayjs locale (including auto-detection), add language buttons to the popup UI, bump manifest version, and record the change in change.log.