Add search functionality with SearchBar component, update YearDashboard to filter people and gifts based on search input, and enhance GiftModal and PersonModal for better state management.

src/lib/components/molecules/SearchBar.svelte

@@ -0,0 +1,20 @@
+<script>
+	import { searchStore } from '$lib/store/search.svelte';
+	import { Search } from 'lucide-svelte';
+	import { slide } from 'svelte/transition';
+
+	let showSearch = $state(false);
+</script>
+
+<div class="flex items-center gap-2">
+	{#if showSearch}
+		<input
+			transition:slide={{ axis: 'x' }}
+			bind:value={searchStore.value}
+			type="text"
+			placeholder="Szukaj"
+			class="border-none rounded-xl bg-neutral-300"
+		/>
+	{/if}
+	<Search class="cursor-pointer" onclick={() => (showSearch = !showSearch)} />
+</div>