feat: add batch-cooking sessions (single "mega recipe" with dish sections)

New AI-generated batch-cooking flow: pick N dinners/lunches + servings,
get one unified recipe covering a full prep session — merged shopping
list, steps tagged per-dish (a step can advance several dishes at once,
e.g. a shared oven bake), and per-dish storage (fridge/freezer) + exact
day-of reheat/finishing instructions.

Schema: recipes.isBatchCook, recipeSteps.appliesTo (dish names), new
recipeBatchDishes table. Batch recipes are excluded from the normal
/recipes list and live under their own /batch-cooking section.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/app/(app)/batch-cooking/page.tsx

@@ -0,0 +1,31 @@
+import type { Metadata } from "next";
+import { headers } from "next/headers";
+import { auth } from "@/lib/auth/server";
+import { db, recipes, eq, and, desc } from "@epicure/db";
+import { BatchCookingPageContent } from "@/components/recipe/batch-cooking-page-content";
+
+export const metadata: Metadata = {};
+
+export default async function BatchCookingPage() {
+  const session = await auth.api.getSession({ headers: await headers() });
+  if (!session) return null;
+
+  const sessions = await db.query.recipes.findMany({
+    where: and(eq(recipes.authorId, session.user.id), eq(recipes.isBatchCook, true)),
+    orderBy: desc(recipes.createdAt),
+    with: { batchDishes: true },
+  });
+
+  return (
+    <BatchCookingPageContent
+      sessions={sessions.map((r) => ({
+        id: r.id,
+        title: r.title,
+        description: r.description,
+        baseServings: r.baseServings,
+        createdAt: r.createdAt.toISOString(),
+        dishCount: r.batchDishes.length,
+      }))}
+    />
+  );
+}