fix(app): remove interface transition changes accidentally merged into dev (#36653)

packages/app/src/context/settings.tsx

@@ -34,7 +34,6 @@ export interface Settings {
     showCustomAgents: boolean
     mobileTitlebarPosition: "top" | "bottom"
     newLayoutDesigns?: boolean
-    newInterfaceNoticeDismissed?: boolean
   }
   appearance: {
     fontSize: number
@@ -54,8 +53,6 @@ export const monoDefault = "System Mono"
 export const sansDefault = "System Sans"
 export const terminalDefault = "JetBrainsMono Nerd Font Mono"
 export const newLayoutDesignsDefault = import.meta.env.VITE_OPENCODE_CHANNEL !== "prod"
-// Date the old interface is retired; the settings toggle references this countdown.
-export const oldInterfaceSunset = new Date(2026, 7, 6)
 
 const monoFallback =
   'ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace'
@@ -255,10 +252,6 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
         setNewLayoutDesigns(value: boolean) {
           setStore("general", "newLayoutDesigns", value)
         },
-        newInterfaceNoticeDismissed: withFallback(() => store.general?.newInterfaceNoticeDismissed, false),
-        dismissNewInterfaceNotice() {
-          setStore("general", "newInterfaceNoticeDismissed", true)
-        },
       },
       visibility: {
         fileTree: visible(showFileTree),