- App.svelte: new 'settings' view with account/actions/about sections, sign-out button, pdsBase()/appviewBase() helpers, showError wired into logout, profile gains open-in-browser + sign-out + recent-posts heading - NavRail: add settings item + gear icon, View union extended to 5 - tests: NavRail.test.ts now expects 5 buttons + covers settings click, NavRailHarness View type extended