diff --git a/Sources/Core/Auth/AppConfig.swift b/Sources/Core/Auth/AppConfig.swift
index dca6f6f..d268ba5 100644
--- a/Sources/Core/Auth/AppConfig.swift
+++ b/Sources/Core/Auth/AppConfig.swift
@@ -10,7 +10,10 @@ enum AppConfig {
         keychainService: "ev.mana.cardecky",
         // Explizit auf TeamID.BundleID, statt nil. Vermeidet Logout
         // bei TestFlight-Cert-Drift (siehe mana-swift-core v1.5.1).
-        keychainAccessGroup: "QP3GLU8PH3.ev.mana.cardecky"
+        keychainAccessGroup: "QP3GLU8PH3.ev.mana.cardecky",
+        // Single-Source fuer den App-Group-String (App-Hülle + Widget
+        // + ShareExt-Entitlement spiegeln das hardcoded).
+        appGroup: "group.ev.mana.cardecky"
     )
 
     static let apiBaseURL = URL(string: "https://cardecky-api.mana.how")!
diff --git a/Sources/Core/Telemetry/Log.swift b/Sources/Core/Telemetry/Log.swift
index 7a01f3c..5970cf3 100644
--- a/Sources/Core/Telemetry/Log.swift
+++ b/Sources/Core/Telemetry/Log.swift
@@ -1,13 +1,19 @@
-import Foundation
+import ManaCore
 import OSLog
 
-/// App-eigene OSLog-Logger unter Subsystem `ev.mana.cardecky`.
-/// ManaCore loggt unter `ev.mana.core` parallel — siehe
-/// `mana-swift-core/Sources/ManaCore/Telemetry/CoreLog.swift`.
+/// App-eigene OSLog-Logger gegen ``AppConfig/manaAppConfig``. Standard-
+/// Kategorien (`app`/`auth`/`api`) kommen aus ``ManaAppLog`` (mana-swift-
+/// core v1.7.0+), app-spezifische über `mana.category(…)`.
+///
+/// Subsystem leitet sich aus `AppConfig.manaAppConfig.logSubsystem` ab
+/// — heute `ev.mana.cardecky`. ManaCore loggt parallel unter
+/// `ev.mana.core`.
 enum Log {
-    static let app = Logger(subsystem: "ev.mana.cardecky", category: "app")
-    static let auth = Logger(subsystem: "ev.mana.cardecky", category: "auth")
-    static let api = Logger(subsystem: "ev.mana.cardecky", category: "api")
-    static let study = Logger(subsystem: "ev.mana.cardecky", category: "study")
-    static let sync = Logger(subsystem: "ev.mana.cardecky", category: "sync")
+    private static let mana = ManaAppLog(AppConfig.manaAppConfig)
+
+    static let app = mana.app
+    static let auth = mana.auth
+    static let api = mana.api
+    static let study = mana.category("study")
+    static let sync = mana.category("sync")
 }