feat(auth): 手机号验证码登录（会话模型 + 登录页 + 导航接入）

feature/profile/src/main/kotlin/com/mingyuan/android_client/feature/profile/ProfileScreen.kt

@@ -55,6 +55,7 @@ const val PROFILE_ROUTE = "profile"
 
 @Composable
 fun ProfileScreen(
+    onNavigateToAuth: () -> Unit,
     onLoggedOut: () -> Unit,
     modifier: Modifier = Modifier,
     viewModel: ProfileViewModel = hiltViewModel(),
@@ -68,7 +69,7 @@ fun ProfileScreen(
 
     when (val state = uiState) {
         is ProfileUiState.Loading -> ProfileSkeleton(modifier)
-        is ProfileUiState.LoggedOut -> LoggedOutState(onLogin = viewModel::login, modifier = modifier)
+        is ProfileUiState.LoggedOut -> LoggedOutState(onLogin = onNavigateToAuth, modifier = modifier)
         is ProfileUiState.Error -> ErrorState(
             message = state.message,
             onRetry = {},

feature/profile/src/main/kotlin/com/mingyuan/android_client/feature/profile/ProfileViewModel.kt

@@ -52,12 +52,6 @@ class ProfileViewModel @Inject constructor(
     private val _logoutEvents = MutableSharedFlow<Unit>()
     val logoutEvents: SharedFlow<Unit> = _logoutEvents
 
-    fun login() {
-        viewModelScope.launch {
-            sessionRepository.login()
-        }
-    }
-
     fun logout() {
         viewModelScope.launch {
             sessionRepository.logout()