feat(planner): hide RecipePicker inner header in swap context

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/planner/RecipePicker.svelte

@@ -88,7 +88,8 @@
 {/snippet}
 
 <div style="background: var(--color-page); font-family: var(--font-sans);">
-	<!-- Header -->
+	<!-- Header (hidden in swap context — the panel/sheet title already provides context) -->
+	{#if !replacingRecipe}
 		<div style="padding: 10px 12px 6px; border-bottom: 1px solid var(--color-border);">
 			<p style="font-family: var(--font-display); font-size: 14px; font-weight: 500; color: var(--color-text); margin: 0;">
 				Rezept wählen
@@ -97,6 +98,7 @@
 				{dateLabel}
 			</p>
 		</div>
+	{/if}
 
 	<!-- Wird ersetzt banner (swap context) -->
 	{#if replacingRecipe}

frontend/src/lib/planner/RecipePicker.test.ts

@@ -186,6 +186,16 @@ describe('RecipePicker', () => {
 		expect(screen.queryByText(/Wird ersetzt/i)).toBeNull();
 	});
 
+	it('hides Rezept wählen header when replacingRecipe is set', () => {
+		render(RecipePicker, { props: { ...baseProps, replacingRecipe: { name: 'Pasta' } } });
+		expect(screen.queryByText(/Rezept wählen/i)).toBeNull();
+	});
+
+	it('shows Rezept wählen header when replacingRecipe is not set', () => {
+		render(RecipePicker, { props: baseProps });
+		expect(screen.getByText(/Rezept wählen/i)).toBeTruthy();
+	});
+
 	it('excludes recipe from Alle Rezepte when excludeRecipeId is set', () => {
 		render(RecipePicker, { props: { ...baseProps, excludeRecipeId: 'r2' } });
 		expect(screen.queryByText('Spaghetti Carbonara')).toBeNull();