refactor(view): TimeDisplay als eigenstaendige Component

timeSummary-Formatierung in eine wiederverwendbare Component
gezogen. RecipeView liefert nur noch die drei Werte — zukuenftige
Call-Sites (Preview, Hover-Cards) koennen dieselbe Logik reusen.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/components/TimeDisplay.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+  type Props = {
+    prepTimeMin: number | null;
+    cookTimeMin: number | null;
+    totalTimeMin: number | null;
+  };
+
+  let { prepTimeMin, cookTimeMin, totalTimeMin }: Props = $props();
+
+  const summary = $derived.by(() => {
+    const parts: string[] = [];
+    if (prepTimeMin) parts.push(`Vorb. ${prepTimeMin} min`);
+    if (cookTimeMin) parts.push(`Kochen ${cookTimeMin} min`);
+    if (!prepTimeMin && !cookTimeMin && totalTimeMin)
+      parts.push(`Gesamt ${totalTimeMin} min`);
+    return parts.join(' · ');
+  });
+</script>
+
+{#if summary}
+  <p class="times">{summary}</p>
+{/if}
+
+<style>
+  .times {
+    margin: 0 0 0.25rem;
+    color: #666;
+    font-size: 0.9rem;
+  }
+</style>