Implement progressive enhancement for universal search with context-aware filtering

Add comprehensive search solution that works across all recipe pages with proper fallbacks. Features include universal API endpoint, context-aware filtering (category/tag/icon/season/favorites), and progressive enhancement with form submission fallback for no-JS users.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/routes/rezepte/search/+page.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+    import type { PageData } from './$types';
+    import Recipes from '$lib/components/Recipes.svelte';
+    import Search from '$lib/components/Search.svelte';
+    import Card from '$lib/components/Card.svelte';
+    export let data: PageData;
+    export let current_month = new Date().getMonth() + 1;
+</script>
+
+<style>
+    h1 {
+        text-align: center;
+        font-size: 3em;
+    }
+    .search-info {
+        text-align: center;
+        margin-bottom: 2rem;
+        color: var(--nord3);
+    }
+    .filter-info {
+        text-align: center;
+        margin-bottom: 1rem;
+        font-size: 0.9em;
+        color: var(--nord2);
+    }
+</style>
+
+<svelte:head>
+    <title>Suchergebnisse{data.query ? ` für "${data.query}"` : ''} - Bocken Rezepte</title>
+    <meta name="description" content="Suchergebnisse in den Bockenschen Rezepten." />
+</svelte:head>
+
+<h1>Suchergebnisse</h1>
+
+{#if data.filters.category || data.filters.tag || data.filters.icon || data.filters.season || data.filters.favoritesOnly}
+    <div class="filter-info">
+        Gefiltert nach:
+        {#if data.filters.category}Kategorie "{data.filters.category}"{/if}
+        {#if data.filters.tag}Stichwort "{data.filters.tag}"{/if}
+        {#if data.filters.icon}Icon "{data.filters.icon}"{/if}
+        {#if data.filters.season}Saison "{data.filters.season}"{/if}
+        {#if data.filters.favoritesOnly}Nur Favoriten{/if}
+    </div>
+{/if}
+
+<Search 
+    category={data.filters.category}
+    tag={data.filters.tag}
+    icon={data.filters.icon}
+    season={data.filters.season}
+    favoritesOnly={data.filters.favoritesOnly}
+/>
+
+{#if data.error}
+    <div class="search-info">
+        <p>Fehler bei der Suche: {data.error}</p>
+    </div>
+{:else if data.query}
+    <div class="search-info">
+        <p>{data.results.length} Ergebnisse für "{data.query}"</p>
+    </div>
+{/if}
+
+{#if data.results.length > 0}
+    <Recipes>
+        {#each data.results as recipe}
+            <Card {recipe} {current_month} isFavorite={recipe.isFavorite} showFavoriteIndicator={true}></Card>
+        {/each}
+    </Recipes>
+{:else if data.query && !data.error}
+    <div class="search-info">
+        <p>Keine Rezepte gefunden.</p>
+        <p>Versuche es mit anderen Suchbegriffen.</p>
+    </div>
+{/if}