* mkstack upgrade
* more changes wip
* refactor: replace RelaySelector with RelayListManager in ProfileView, BookmarksPage, FollowingPage, and Nip05ProfilePage
* feat: add buffer dependency to package.json and package-lock.json
* feat: add SettingsPage and integrate into AppRouter and Header
* feat: refactor ZapButton to use Button component for improved styling
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Co-authored-by: highperfocused <highperfocused@pm.me>
