feat: add dedup function for catalog items

composeApp/src/commonMain/kotlin/com/nuvio/app/features/catalog/CatalogData.kt

@@ -102,6 +102,18 @@ fun mergeCatalogItems(
     }
 }
 
+fun dedupeCatalogItems(items: List<MetaPreview>): List<MetaPreview> {
+    if (items.size < 2) return items
+    val seen = mutableSetOf<String>()
+    return buildList(items.size) {
+        items.forEach { item ->
+            if (seen.add(item.stableKey())) {
+                add(item)
+            }
+        }
+    }
+}
+
 internal fun buildCatalogUrl(
     manifestUrl: String,
     type: String,

composeApp/src/commonMain/kotlin/com/nuvio/app/features/catalog/CatalogRepository.kt

@@ -75,6 +75,7 @@ object CatalogRepository {
                     ?.items
                     .orEmpty()
                     .map { it.toMetaPreview() }
+                    .let(::dedupeCatalogItems)
             }.fold(
                 onSuccess = { items ->
                     if (activeRequest != request) return@fold
@@ -127,7 +128,7 @@ object CatalogRepository {
                     if (activeRequest != request) return@fold
 
                     val mergedItems = if (reset) {
-                        page.items
+                        dedupeCatalogItems(page.items)
                     } else {
                         mergeCatalogItems(_uiState.value.items, page.items)
                     }