fix `expect'/'actual' classes (including interfaces, objects, annotations, enums, and 'actual' typealiases) are in Beta. Consider using the '-Xexpect-actual-classes' flag to suppress this warning. Also see: https://youtrack.jetbrains.com/issue/KT-61573

frontend/features/auth-feature/src/commonMain/kotlin/at/mocode/clients/authfeature/di/AuthFeatureModule.kt

@@ -23,7 +23,10 @@ val authFeatureModule = module {
   // Bridge to core network TokenProvider without adding a hard dependency there
   single<TokenProvider> {
     object : TokenProvider {
-      override fun getAccessToken(): String? = get<AuthTokenManager>().getToken()
+      override fun getAccessToken(): String? {
+        val token = get<AuthTokenManager>().getToken()
+        return token
+      }
     }
   }
 }

frontend/features/auth-feature/src/commonMain/kotlin/at/mocode/clients/authfeature/oauth/AuthCallbackParams.kt

@@ -2,6 +2,7 @@ package at.mocode.clients.authfeature.oauth
 
 data class CallbackParams(val code: String, val state: String?)
 
+@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
 expect object AuthCallbackParams {
   /**
    * Parse OAuth callback parameters from the current environment.

frontend/features/auth-feature/src/commonMain/kotlin/at/mocode/clients/authfeature/oauth/OAuthPkce.kt

@@ -19,6 +19,7 @@ object OAuthParams {
  * For the desktop (JVM) target we currently do not start a browser flow,
  * but we provide hashing to keep API parity.
  */
+@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
 expect object OAuthPkceService {
   /** Starts a PKCE auth attempt and stores transient state in memory. */
   suspend fun startAuth(): PkceState

frontend/features/auth-feature/src/jsMain/kotlin/at/mocode/clients/authfeature/oauth/AuthCallbackParamsJs.kt

@@ -2,6 +2,7 @@ package at.mocode.clients.authfeature.oauth
 
 import kotlinx.browser.window
 
+@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
 actual object AuthCallbackParams {
   actual fun parse(): CallbackParams? {
     val search = window.location.search

frontend/features/auth-feature/src/jsMain/kotlin/at/mocode/clients/authfeature/oauth/OAuthPkceJs.kt

@@ -43,6 +43,7 @@ private fun sha256(input: String): Promise<ArrayBuffer> {
   return subtle.digest("SHA-256", data) as Promise<ArrayBuffer>
 }
 
+@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
 actual object OAuthPkceService {
   actual suspend fun startAuth(): PkceState {
     val codeVerifier = randomUrlSafe(64)