chore(infra): Network/Auth – DoD schließen

- Entfernen/Deprecaten: `frontend/features/auth-feature/.../AuthenticatedHttpClient.kt` und alle manuellen `Authorization`‑Header‑Setzungen.
              - Stattdessen: DI‑`apiClient` via Koin injizieren (`single(named("apiClient"))`) und Token‑Anreicherung über Ktor `Auth` Plugin (Bearer) verdrahten.
              - Build‑Guard ergänzen: Auch Vorkommen von `HttpHeaders.Authorization` erkennen.

frontend/shells/meldestelle-portal/src/commonMain/kotlin/MainApp.kt

@@ -6,8 +6,8 @@ import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.unit.dp
 import androidx.compose.runtime.collectAsState
 import at.mocode.clients.shared.navigation.AppScreen
-import at.mocode.clients.authfeature.AuthenticatedHttpClient
 import at.mocode.clients.authfeature.AuthTokenManager
+import org.koin.core.context.GlobalContext
 import at.mocode.clients.pingfeature.PingScreen
 import at.mocode.clients.pingfeature.PingViewModel
 import at.mocode.shared.core.AppConstants
@@ -29,7 +29,8 @@ fun MainApp() {
     ) {
       var currentScreen by remember { mutableStateOf<AppScreen>(AppScreen.Home) }
 
-      val authTokenManager = remember { AuthenticatedHttpClient.getAuthTokenManager() }
+      // Resolve AuthTokenManager from Koin
+      val authTokenManager = remember { GlobalContext.get().koin.get<AuthTokenManager>() }
       val pingViewModel = remember { PingViewModel() }
       val scope = rememberCoroutineScope()
 

frontend/shells/meldestelle-portal/src/jsMain/kotlin/main.kt

@@ -4,6 +4,7 @@ import kotlinx.browser.document
 import org.w3c.dom.HTMLElement
 import at.mocode.shared.di.initKoin
 import at.mocode.frontend.core.network.networkModule
+import at.mocode.clients.authfeature.di.authFeatureModule
 import at.mocode.frontend.core.localdb.localDbModule
 import at.mocode.frontend.core.localdb.DatabaseProvider
 import kotlinx.coroutines.MainScope
@@ -19,8 +20,8 @@ fun main() {
   console.log("[WebApp] main() entered")
   // Initialize DI (Koin) with shared modules + network + local DB modules
   try {
-    initKoin { modules(networkModule, localDbModule) }
-    console.log("[WebApp] Koin initialized with networkModule + localDbModule")
+    initKoin { modules(networkModule, localDbModule, authFeatureModule) }
+    console.log("[WebApp] Koin initialized with networkModule + localDbModule + authFeatureModule")
   } catch (e: dynamic) {
     console.warn("[WebApp] Koin initialization warning:", e)
   }

frontend/shells/meldestelle-portal/src/jvmMain/kotlin/main.kt

@@ -4,12 +4,13 @@ import androidx.compose.ui.window.WindowState
 import androidx.compose.ui.unit.dp
 import at.mocode.shared.di.initKoin
 import at.mocode.frontend.core.network.networkModule
+import at.mocode.clients.authfeature.di.authFeatureModule
 
 fun main() = application {
   // Initialize DI (Koin) with shared modules + network module
   try {
-    initKoin { modules(networkModule) }
-    println("[DesktopApp] Koin initialized with networkModule")
+    initKoin { modules(networkModule, authFeatureModule) }
+    println("[DesktopApp] Koin initialized with networkModule + authFeatureModule")
   } catch (e: Exception) {
     println("[DesktopApp] Koin initialization warning: ${e.message}")
   }