chore: handle onBackPressed in home

app/src/main/java/univ/earthbreaker/namu/feature/home/HomeRoute.kt

@@ -1,15 +1,19 @@
 package univ.earthbreaker.namu.feature.home
 
+import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
+import androidx.compose.ui.platform.LocalContext
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
 import univ.earthbreaker.namu.feature.home.model.HomeActions
 import univ.earthbreaker.namu.feature.home.model.HomeUiState
 import univ.earthbreaker.namu.feature.loading.LoadingActions
 import univ.earthbreaker.namu.feature.loading.LoadingScreen
 import univ.earthbreaker.namu.feature.loading.LoadingViewModel
+import univ.earthbreaker.namu.util.extension.finishSafely
+import univ.earthbreaker.namu.util.extension.getActivity
 
 @Composable
 fun HomeRoute(
@@ -21,6 +25,10 @@ fun HomeRoute(
         characterNo: Int,
     ) -> Unit,
 ) {
+    // handle onBackPressed
+    HomeBackHandler()
+
+    // declare ViewModels
     val homeViewModel: HomeViewModel = viewModel()
     val loadingViewModel: LoadingViewModel = viewModel()
 
@@ -50,6 +58,14 @@ fun HomeRoute(
     }
 }
 
+@Composable
+fun HomeBackHandler() {
+    val context = LocalContext.current
+    BackHandler {
+        context.getActivity()?.finishSafely()
+    }
+}
+
 @Composable
 fun rememberHomeActions(
     viewModel: HomeViewModel,