The phone's list learns a second order — sort boards by name or by recency

A segmented control above the mobile board list, remembered across
launches: Name keeps the index's stable title order, Recent sorts by
content-change date descending with undated boards last and ties held
stable against refresh reshuffling.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

KanbanMobile/Screens/BoardsTabView.swift

@@ -6,12 +6,17 @@ import SwiftUI
 /// Renders both of `BoardIndexStore.Phase`'s live states and, above the list, the iCloud notice —
 /// which is a row, not a wall (softened 2026-08-08). A phone with no account still has a device home
 /// and therefore still has boards, so the missing half of the app is reported next to the half that
-/// works rather than in place of it.
+/// works rather than in place of it. A segmented control above the rows lets the list be sorted by
+/// name or by most recent change, remembered across launches.
 struct BoardsTabView: View {
     @Environment(BoardIndexStore.self) private var index
 
     @State private var isPresentingNewBoard = false
 
+    /// Persisted as its raw value, not the enum itself — `AppStorage` needs a property-list type, and
+    /// the raw `String` is exactly what `BoardSortOrder` promises to keep stable.
+    @AppStorage("boardListSortOrder") private var sortOrderRaw = BoardSortOrder.name.rawValue
+
     /// The board whose settings sheet is up. A value, not a URL: the sheet renders the row's own
     /// summary, and a successful move dismisses it before the stale copy could matter.
     @State private var boardInSettings: BoardSummary?
@@ -55,6 +60,19 @@ struct BoardsTabView: View {
         }
     }
 
+    /// The stored raw value as the enum, defaulting to `.name` on anything the store didn't write
+    /// itself — an unset key or a stale raw value from a build that no longer has this case.
+    private var sortOrder: Binding<BoardSortOrder> {
+        Binding(
+            get: { BoardSortOrder(rawValue: sortOrderRaw) ?? .name },
+            set: { sortOrderRaw = $0.rawValue }
+        )
+    }
+
+    private var sortedBoards: [BoardSummary] {
+        sortOrder.wrappedValue.sorted(index.boards)
+    }
+
     @ViewBuilder
     private var content: some View {
         switch index.phase {
@@ -75,7 +93,15 @@ struct BoardsTabView: View {
                         )
                     }
                 } else {
-                    ForEach(index.boards) { board in
+                    Picker("Sort", selection: sortOrder) {
+                        Text("Name").tag(BoardSortOrder.name)
+                        Text("Recent").tag(BoardSortOrder.recent)
+                    }
+                    .pickerStyle(.segmented)
+                    .listRowBackground(Color.clear)
+                    .listRowSeparator(.hidden)
+
+                    ForEach(sortedBoards) { board in
                         NavigationLink(value: BoardRoute.lanes(boardRoot: board.rootURL)) {
                             BoardSummaryRow(board: board)
                         }