diff --git a/Sources/App/RootView.swift b/Sources/App/RootView.swift
index 79ab44a..225085a 100644
--- a/Sources/App/RootView.swift
+++ b/Sources/App/RootView.swift
@@ -9,15 +9,20 @@ struct RootView: View {
     @State private var pendingDeepLinkSlug: String?
 
     var body: some View {
-        switch auth.status {
-        case .signedIn:
-            mainTabs
-                .onOpenURL { url in handle(url: url) }
-                .onContinueUserActivity(NSUserActivityTypeBrowsingWeb) { activity in
-                    if let url = activity.webpageURL { handle(url: url) }
-                }
-        case .unknown, .signedOut, .signingIn, .error:
-            LoginView()
+        Group {
+            switch auth.status {
+            case .signedIn:
+                mainTabs
+                    .onOpenURL { url in handle(url: url) }
+                    .onContinueUserActivity(NSUserActivityTypeBrowsingWeb) { activity in
+                        if let url = activity.webpageURL { handle(url: url) }
+                    }
+            case .unknown, .signedOut, .signingIn, .error:
+                LoginView()
+            }
+        }
+        .task {
+            await auth.ensureSignedIn()
         }
     }
 
diff --git a/Sources/Core/Auth/AuthClient+EnsureSignedIn.swift b/Sources/Core/Auth/AuthClient+EnsureSignedIn.swift
new file mode 100644
index 0000000..b927737
--- /dev/null
+++ b/Sources/Core/Auth/AuthClient+EnsureSignedIn.swift
@@ -0,0 +1,18 @@
+import ManaCore
+
+extension AuthClient {
+    /// Stellt sicher, dass der User eingeloggt ist. Nur in DEBUG-Builds
+    /// aktiv: wenn die Session nach `bootstrap()` `.signedOut` ist,
+    /// wird automatisch mit den DEBUG-Credentials angemeldet. In
+    /// Release-Builds No-Op — User muss manuell einloggen.
+    ///
+    /// Vorbild: memoro-native — wird in `RootView.task` aufgerufen.
+    func ensureSignedIn() async {
+        #if DEBUG
+            if case .signedOut = status {
+                Log.auth.notice("DEBUG auto-login: signing in with DebugCredentials")
+                await signIn(email: DebugCredentials.email, password: DebugCredentials.password)
+            }
+        #endif
+    }
+}
diff --git a/Sources/Core/Auth/DebugCredentials.swift b/Sources/Core/Auth/DebugCredentials.swift
new file mode 100644
index 0000000..9234057
--- /dev/null
+++ b/Sources/Core/Auth/DebugCredentials.swift
@@ -0,0 +1,17 @@
+#if DEBUG
+    /// Dev-only Auto-Login-Credentials.
+    ///
+    /// **Nur in DEBUG-Builds aktiv** — der ganze File ist hinter
+    /// `#if DEBUG` gewrapped und wird in Release-Builds (TestFlight/
+    /// App-Store) nicht kompiliert. Wird beim App-Start von
+    /// `AuthClient.ensureSignedIn()` verwendet, falls die Session-Token
+    /// im Keychain abgelaufen oder leer sind — damit Till während der
+    /// Entwicklung nicht jedes Mal manuell einloggen muss.
+    ///
+    /// Identisches Pattern wie `memoro-native/Sources/Core/Auth/
+    /// DebugCredentials.swift`.
+    enum DebugCredentials {
+        static let email = "tills95@gmail.com"
+        static let password = "Aa-123456789"
+    }
+#endif
diff --git a/project.yml b/project.yml
index 552841b..eb17b87 100644
--- a/project.yml
+++ b/project.yml
@@ -55,7 +55,7 @@ targets:
       path: Sources/Resources/Info.plist
       properties:
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "9"
+        CFBundleVersion: "10"
         CFBundleDevelopmentRegion: de
         CFBundleDisplayName: Cardecky
         LSApplicationCategoryType: "public.app-category.education"
@@ -111,7 +111,7 @@ targets:
       properties:
         CFBundleDisplayName: Als Karte speichern
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "9"
+        CFBundleVersion: "10"
         NSExtension:
           NSExtensionPointIdentifier: com.apple.share-services
           NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).ShareViewController
@@ -144,7 +144,7 @@ targets:
       properties:
         CFBundleDisplayName: Cardecky Widget
         CFBundleShortVersionString: "0.1.0"
-        CFBundleVersion: "9"
+        CFBundleVersion: "10"
         NSExtension:
           NSExtensionPointIdentifier: com.apple.widgetkit-extension
     entitlements: