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.
Add a complete Edge extension under edge/ (manifest, popup, CSS, JS, locales, assets, LICENSE) and a change.log. Update README with Edge/mobile notes and simplify content. Update GitHub Actions workflow to read edge/manifest.json version, package Edge builds, and include Edge asset in the release summary (also bump default release_tag). Minor update to firefox/js/oper.js and include .DS_Store change.
jonny