The app learns Appearance — Auto, Light, Dark from the View menu and a toolbar pull-down

View ▸ Appearance (11-command-nexus.md): three radio-exclusive rows,
app-wide, persisted, needing no window in front — the View menu's new
last group. AppearanceStore owns the override's rules (absent key =
Auto, lenient reads degrade to Auto, remove-at-default) with an
injectable apply seam so test hosts never touch NSApp; the one real
apply hands NSApp.appearance its answer in applicationDidFinishLaunching,
the global side effect KanbanApp.init must not carry. The board toolbar
gains its first .picker item — an NSMenuToolbarItem whose rows re-fetch
their spec fresh, checkmark read at menu-open like every other menu row —
and Appearance joins the search field as the second default item,
centered beside it (03-board-ui.md ▸ Toolbar, ratified 2026-08-07).

Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy

Kanban/KanbanApp.swift

@@ -240,9 +240,10 @@ struct KanbanApp: App {
         ToolbarCommands()
 
         // The View menu. `CommandGroupPlacement.toolbar` *is* View — the menu the toolbar's own
-        // items live in — which is where 11-command-nexus.md files Show Trash. Two dividers split it
+        // items live in — which is where 11-command-nexus.md files Show Trash. Three dividers split it
         // by scope, which is the only grouping the inventory implies: the board's toggle, then the
-        // board's zoom ladder, then the card window's view-state rows.
+        // board's zoom ladder, then the card window's view-state rows, then the app-wide appearance
+        // override — last, because unlike everything above it, it needs no window in front at all.
         //
         // "Zoom In" / "Zoom Out" / "Actual Size" rather than a single "Zoom": the system's own Window
         // menu already carries a row titled Zoom, and titles are the remapping mechanism's key, so a
@@ -257,6 +258,10 @@ struct KanbanApp: App {
             Divider()
 
             CardViewCommands()
+
+            Divider()
+
+            AppearanceCommands(appModel: appModel)
         }
 
         // The Board menu (11-command-nexus.md), complete and in its inventoried row order — Open