improvements to the sleep timer

src/lib/components/library/GenericMediaListPage.svelte

@@ -45,6 +45,7 @@
   let sortBy = $state<string>("");
   let sortOrder = $state<"Ascending" | "Descending">("Ascending");
   let searchTimeout: ReturnType<typeof setTimeout> | null = null;
+  let initialLoadDone = false;
 
   $effect(() => {
     sortBy = config.defaultSort;
@@ -57,6 +58,7 @@
   onMount(async () => {
     await loadItems();
     markLoaded();
+    initialLoadDone = true;
   });
 
   async function loadItems() {
@@ -97,10 +99,12 @@
     searchQuery = query;
   }
 
-  // Debounce search input (300ms delay)
+  // Debounce search input (300ms delay) - skip initial mount to avoid duplicate load
   $effect(() => {
-    if (searchTimeout) clearTimeout(searchTimeout);
+    const _query = searchQuery; // track for reactivity
+    if (!initialLoadDone) return;
 
+    if (searchTimeout) clearTimeout(searchTimeout);
     searchTimeout = setTimeout(() => {
       debouncedSearchQuery = searchQuery;
       loadItems();