feat: enable live search on all recipe pages

Previously, live client-side search only worked on the main /rezepte and /recipes pages. All other pages (category, tag, favorites, search results, icon, and season pages) fell back to server-side search with form submission.

Now all recipe pages support live filtering as users type, providing consistent UX across the site.

src/routes/[recipeLang=recipeLang]/season/[month]/+page.svelte

@@ -13,10 +13,28 @@
         : ["Januar", "Februar", "März", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"]);
 
     import { rand_array } from '$lib/js/randomize';
+
+    // Search state
+    let matchedRecipeIds = $state(new Set());
+    let hasActiveSearch = $state(false);
+
+    // Handle search results from Search component
+    function handleSearchResults(ids, categories) {
+        matchedRecipeIds = ids;
+        hasActiveSearch = ids.size < data.season.length;
+    }
+
+    // Filter recipes based on search
+    const filteredRecipes = $derived.by(() => {
+        if (!hasActiveSearch) {
+            return data.season;
+        }
+        return data.season.filter(r => matchedRecipeIds.has(r._id));
+    });
 </script>
-<SeasonLayout active_index={data.month -1} {months} routePrefix="/{data.recipeLang}" lang={data.lang}>
+<SeasonLayout active_index={data.month -1} {months} routePrefix="/{data.recipeLang}" lang={data.lang} recipes={data.season} onSearchResults={handleSearchResults}>
 <Recipes slot=recipes>
-	{#each rand_array(data.season) as recipe}
+	{#each rand_array(filteredRecipes) as recipe}
 		<Card {recipe} icon_override=true isFavorite={recipe.isFavorite} showFavoriteIndicator={!!data.session?.user} routePrefix="/{data.recipeLang}"></Card>
 	{/each}
 </Recipes>