feat: add pull-to-refresh gesture to HomeScreen

Wrap HomeContent with PullToRefreshBox to allow refreshing library,
continue watching, and next up sections by pulling down. Also fix
refreshHomeData to suspend until loading completes so the refresh
indicator dismisses properly.

app/src/main/java/hu/bbara/purefin/app/home/HomePage.kt

@@ -47,6 +47,7 @@ fun HomePage(
     val continueWatching = viewModel.continueWatching.collectAsState()
     val nextUp = viewModel.nextUp.collectAsState()
     val latestLibraryContent = viewModel.latestLibraryContent.collectAsState()
+    val isRefreshing = viewModel.isRefreshing.collectAsState()
 
     LifecycleResumeEffect(Unit) {
         viewModel.onResumed()
@@ -89,6 +90,8 @@ fun HomePage(
                 libraryContent = latestLibraryContent.value,
                 continueWatching = continueWatching.value,
                 nextUp = nextUp.value,
+                isRefreshing = isRefreshing.value,
+                onRefresh = viewModel::onRefresh,
                 onMovieSelected = viewModel::onMovieSelected,
                 onSeriesSelected = viewModel::onSeriesSelected,
                 onEpisodeSelected = viewModel::onEpisodeSelected,

app/src/main/java/hu/bbara/purefin/app/home/ui/HomeContent.kt

@@ -6,7 +6,9 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.pulltorefresh.PullToRefreshBox
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
@@ -16,21 +18,29 @@ import hu.bbara.purefin.feature.shared.home.NextUpItem
 import hu.bbara.purefin.feature.shared.home.PosterItem
 import org.jellyfin.sdk.model.UUID
 
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun HomeContent(
     libraries: List<LibraryItem>,
     libraryContent: Map<UUID, List<PosterItem>>,
     continueWatching: List<ContinueWatchingItem>,
     nextUp: List<NextUpItem>,
+    isRefreshing: Boolean,
+    onRefresh: () -> Unit,
     onMovieSelected: (UUID) -> Unit,
     onSeriesSelected: (UUID) -> Unit,
     onEpisodeSelected: (UUID, UUID, UUID) -> Unit,
     modifier: Modifier = Modifier
 ) {
-    LazyColumn(
+    PullToRefreshBox(
+        isRefreshing = isRefreshing,
+        onRefresh = onRefresh,
         modifier = modifier
             .fillMaxSize()
             .background(MaterialTheme.colorScheme.background)
+    ) {
+    LazyColumn(
+        modifier = Modifier.fillMaxSize()
     ) {
         item {
             Spacer(modifier = Modifier.height(8.dp))
@@ -69,4 +79,5 @@ fun HomeContent(
             Spacer(modifier = Modifier.height(8.dp))
         }
     }
+    }
 }