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/components/recipe/add-to-collection-dialog.tsx

@@ -20,11 +20,14 @@ export function AddToCollectionDialog({
   onOpenChange,
   recipeIds,
   onDone,
+  sourceCollectionId,
 }: {
   open: boolean;
   onOpenChange: (open: boolean) => void;
   recipeIds: string[];
   onDone: () => void;
+  /** When set, this is a "move" — after adding to the target, the recipes are removed from this collection. */
+  sourceCollectionId?: string;
 }) {
   const t = useTranslations("recipe");
   const [collections, setCollections] = useState<CollectionSummary[]>([]);
@@ -42,10 +45,10 @@ export function AddToCollectionDialog({
     fetch("/api/v1/collections?limit=50")
       .then((res) => (res.ok ? res.json() : null))
       .then((data: { data: CollectionSummary[] } | null) => {
-        setCollections(data?.data ?? []);
+        setCollections((data?.data ?? []).filter((c) => c.id !== sourceCollectionId));
       })
       .finally(() => setLoading(false));
-  }, [open]);
+  }, [open, sourceCollectionId]);
 
   async function addTo(collectionId: string, collectionName: string) {
     setBusyId(collectionId);
@@ -56,7 +59,20 @@ export function AddToCollectionDialog({
         body: JSON.stringify({ addRecipeIds: recipeIds }),
       });
       if (!res.ok) throw new Error();
-      toast.success(t("addToCollectionSuccess", { count: recipeIds.length, name: collectionName }));
+
+      if (sourceCollectionId) {
+        await fetch(`/api/v1/collections/${sourceCollectionId}`, {
+          method: "PUT",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ removeRecipeIds: recipeIds }),
+        });
+      }
+
+      toast.success(
+        sourceCollectionId
+          ? t("moveToCollectionSuccess", { count: recipeIds.length, name: collectionName })
+          : t("addToCollectionSuccess", { count: recipeIds.length, name: collectionName })
+      );
       onOpenChange(false);
       onDone();
     } catch {
@@ -91,7 +107,9 @@ export function AddToCollectionDialog({
         <DialogHeader>
           <DialogTitle className="flex items-center gap-2">
             <FolderPlus className="h-5 w-5 text-primary" />
-            {t("addToCollectionTitle", { count: recipeIds.length })}
+            {sourceCollectionId
+              ? t("moveToCollectionTitle", { count: recipeIds.length })
+              : t("addToCollectionTitle", { count: recipeIds.length })}
           </DialogTitle>
         </DialogHeader>