feat(suggestions): C2 — Meal suggestions (variety-aware) (#40)

feat(suggestions): implement C2 meal suggestion screen (Issue #27)

Co-authored-by: Marcel Raddatz <marcel@raddatz.cloud>
Co-committed-by: Marcel Raddatz <marcel@raddatz.cloud>

frontend/src/lib/planner/SuggestionCard.svelte

@@ -0,0 +1,83 @@
+<script lang="ts">
+	interface SlotRecipe {
+		id?: string;
+		name?: string;
+		effort?: string;
+		cookTimeMin?: number;
+	}
+
+	interface Suggestion {
+		recipe?: SlotRecipe;
+		simulatedScore?: number;
+		reasoningType?: 'good' | 'warning';
+		reasoningLabel?: string;
+	}
+
+	let {
+		suggestion,
+		rank,
+		planId,
+		slotDate,
+		weekStart
+	}: {
+		suggestion: Suggestion;
+		rank: number;
+		planId: string;
+		slotDate: string;
+		weekStart: string;
+	} = $props();
+
+	let metadata = $derived(
+		[
+			suggestion.recipe?.cookTimeMin != null ? `${suggestion.recipe.cookTimeMin} Min` : null,
+			suggestion.recipe?.effort ?? null
+		]
+			.filter(Boolean)
+			.join(' · ')
+	);
+</script>
+
+<div class="flex items-start gap-3 rounded-[var(--radius-md)] border border-[var(--color-border)] bg-[var(--color-surface)] px-4 py-3 shadow-[var(--shadow-card)]">
+	<!-- Rank number -->
+	<div class="w-10 flex-shrink-0 self-start text-right">
+		<span class="font-[var(--font-display)] text-[32px] font-[300] leading-none text-[var(--color-text-muted)]">{rank}</span>
+	</div>
+
+	<!-- Card content -->
+	<div class="flex-1 min-w-0">
+		<p class="font-[var(--font-sans)] text-[15px] font-medium text-[var(--color-text)] line-clamp-2">
+			{suggestion.recipe?.name ?? 'Unbekanntes Rezept'}
+		</p>
+		{#if metadata}
+			<p class="mt-0.5 font-[var(--font-sans)] text-[12px] text-[var(--color-text-muted)]">{metadata}</p>
+		{/if}
+
+		<!-- Reasoning badge -->
+		{#if suggestion.reasoningType && suggestion.reasoningLabel}
+			<div
+				data-testid="reasoning-badge"
+				data-type={suggestion.reasoningType}
+				class="mt-2 inline-flex items-center rounded-full px-2 py-0.5 font-[var(--font-sans)] text-[11px] font-medium
+					{suggestion.reasoningType === 'good'
+						? 'bg-[var(--green-tint)] text-[var(--green-dark)]'
+						: 'bg-[var(--yellow-tint)] text-[var(--yellow-text)]'}"
+			>
+				{suggestion.reasoningType === 'good' ? '✓' : '⚠'} {suggestion.reasoningLabel}
+			</div>
+		{/if}
+	</div>
+
+	<!-- Pick action -->
+	<form method="POST" action="?/pickSuggestion" class="flex-shrink-0">
+		<input type="hidden" name="planId" value={planId} />
+		<input type="hidden" name="recipeId" value={suggestion.recipe?.id} />
+		<input type="hidden" name="slotDate" value={slotDate} />
+		<input type="hidden" name="weekStart" value={weekStart} />
+		<button
+			type="submit"
+			class="font-[var(--font-sans)] text-[13px] font-medium tracking-[0.04em] text-[var(--green-dark)] hover:underline"
+		>
+			Wählen
+		</button>
+	</form>
+</div>