diff --git a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
index 4a5536e..f4b17c7 100644
--- a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
+++ b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
@@ -326,6 +326,40 @@ final class RemoteStore: ObservableObject {
         NotificationRouter.shared.updateBadge(0)
     }
 
+    /// Enter the in-app demo (the "Explore a demo" button): drop any live connection, persist the
+    /// flag so it survives relaunch (a reviewer may relaunch), and seed the mock world. `isPaired`
+    /// then returns true, so `RootView` shows the full TabView.
+    func enterDemo() {
+        teardown()
+        demoMode = true
+        UserDefaults.standard.set(true, forKey: Self.demoModeKey)
+        reconnectAttempts = 0
+        seedDemo()
+    }
+
+    /// Leave the demo (Settings ▸ Leave demo): cancel any simulated runs, clear the mock world,
+    /// and return to the real state — reconnect if a Mac is actually paired, else the pairing intro.
+    func exitDemo() {
+        demoMode = false
+        UserDefaults.standard.set(false, forKey: Self.demoModeKey)
+        demoTasks.forEach { $0.cancel() }
+        demoTasks.removeAll()
+        openSessionID = nil
+        openEvents = []
+        openApprovals = []
+        openDiff = nil
+        diffLoading = false
+        sessions = []
+        dashboard = .empty
+        LiveActivityManager.shared.end()
+        NotificationRouter.shared.updateBadge(0)
+        if IdentityStore.loadPairedHost() != nil {
+            reconnect()
+        } else {
+            connectivity = .unpaired
+        }
+    }
+
     // MARK: - Intents (UX_IOS §9)
 
     func open(_ sessionID: SessionID) {