Wire Firebase auth state into settings/logout and refresh Google sign-in config.

This updates the settings account section to show/logout based on authenticated user state, refines auth service naming, and aligns app signing/Firebase config changes needed for successful Google authentication.

Made-with: Cursor

sdk/src/main/kotlin/org/db3/airmq/sdk/auth/AuthService.kt

@@ -4,7 +4,7 @@ import org.db3.airmq.sdk.auth.model.AuthProvider
 import org.db3.airmq.sdk.auth.model.User
 
 interface AuthService {
-    suspend fun getCurrentSession(): User?
+    suspend fun getUser(): User?
     suspend fun isAuthenticated(): Boolean
     suspend fun signIn(provider: AuthProvider, token: String): Result<User>
     suspend fun signOut(): Result<Unit>

sdk/src/main/kotlin/org/db3/airmq/sdk/auth/AuthServiceImpl.kt

@@ -17,7 +17,7 @@ class FirebaseAuthService @Inject constructor(
     private val firebaseAuth: FirebaseAuth
 ) : AuthService {
 
-    override suspend fun getCurrentSession(): User? = firebaseAuth.currentUser?.toUser()
+    override suspend fun getUser(): User? = firebaseAuth.currentUser?.toUser()
 
     override suspend fun isAuthenticated(): Boolean = firebaseAuth.currentUser != null