Initial commit: Kotlin Multiplatform project setup

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Co-Authored-By: Claude <noreply@anthropic.com>

composeApp/src/commonMain/kotlin/com/example/mycrib/viewmodel/AuthViewModel.kt

@@ -0,0 +1,48 @@
+package com.mycrib.android.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.mycrib.shared.models.LoginRequest
+import com.mycrib.shared.models.RegisterRequest
+import com.mycrib.shared.network.ApiResult
+import com.mycrib.shared.network.AuthApi
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+
+class AuthViewModel : ViewModel() {
+    private val authApi = AuthApi()
+
+    private val _loginState = MutableStateFlow<ApiResult<String>>(ApiResult.Loading)
+    val loginState: StateFlow<ApiResult<String>> = _loginState
+
+    fun login(username: String, password: String) {
+        viewModelScope.launch {
+            _loginState.value = ApiResult.Loading
+            val result = authApi.login(LoginRequest(username, password))
+            _loginState.value = when (result) {
+                is ApiResult.Success -> ApiResult.Success(result.data.token)
+                is ApiResult.Error -> result
+                else -> ApiResult.Error("Unknown error")
+            }
+        }
+    }
+
+    fun register(username: String, email: String, password: String) {
+        viewModelScope.launch {
+            _loginState.value = ApiResult.Loading
+            val result = authApi.register(
+                RegisterRequest(
+                    username = username,
+                    email = email,
+                    password = password
+                )
+            )
+            _loginState.value = when (result) {
+                is ApiResult.Success -> ApiResult.Success(result.data.token)
+                is ApiResult.Error -> result
+                else -> ApiResult.Error("Unknown error")
+            }
+        }
+    }
+}