feat: bulk tag editing, bulk export, and move recipes between collections

Extends the existing bulk-select infra: recipes list gets tag add/remove
and multi-recipe Markdown export; collection pages get a select mode to
move recipes to another collection or remove them from the current one.

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

apps/web/app/(app)/collections/[id]/page.tsx

@@ -6,6 +6,7 @@ import { Printer, UtensilsCrossed } from "lucide-react";
 import { auth } from "@/lib/auth/server";
 import { db, collections, eq, and, or } from "@epicure/db";
 import { RecipeCard } from "@/components/recipe/recipe-card";
+import { CollectionRecipesGrid } from "@/components/collections/collection-recipes-grid";
 import { ForkCollectionButton } from "@/components/collections/fork-collection-button";
 import { ShareCollectionButton } from "@/components/collections/share-collection-button";
 import { buttonVariants } from "@/components/ui/button";
@@ -73,6 +74,11 @@ export default async function CollectionPage({ params }: Params) {
 
       {col.recipes.length === 0 ? (
         <EmptyState icon={UtensilsCrossed} title={m.collections.emptyCollection} compact />
+      ) : isOwner ? (
+        <CollectionRecipesGrid
+          collectionId={id}
+          recipes={col.recipes.flatMap((r) => (r.recipe ? [r.recipe] : []))}
+        />
       ) : (
         <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-4">
           {col.recipes.map(({ recipe }) => (