fix(catalog): make the Builder Club catalog read and write its own offers

The previous commit taught bulk editing and delete-with-restore about the BC
catalog. Neither actually worked, and one of them was destructive.

`catalog_items_bc` has six columns: id, item_ids, page_id, catalog_name,
order_number, extradata. There is no price, points, currency, offer_id, limit or
membership column on it. The bulk path read and wrote columns that do not
exist, and the UPDATE was aimed at catalog_items while the SELECT came from
catalog_items_bc — so a BC category move wrote into the normal catalog. Two
tests now pin that pairing: reads and writes have to stay in the same table.

Underneath it the BC table was never being read at all. The inline editor
fetched `/api/admin/catalog/items?pageId=N` without the catalog, so opening a BC
category showed the normal catalog's offers, and the route selected BC rows
directly instead of going through the loader, skipping the furni enrichment the
table needs to render anything but a bare caption. Both catalogs now take the
same path, and the catalog is in the fetch callback's dependencies — without
that, a switch keeps reading the previous catalog's rows through a stale
closure.

Because a BC offer has no price, the editor no longer offers one. The server
refuses price, points and currency changes with a readable message instead of
letting them reach the database as an unknown-column error, and a BC bulk edit
is what it can actually be: a category move.

BC deletions also went through a bare DELETE, which made them the one catalog
mutation with no way back. They now keep their rows and hand back a restoreId
like the normal ones. The catalog is recorded in the audit target rather than
in the payload, so a restore can never put a BC row into the normal offers
table.

src/actions/catalog-items.ts

@@ -210,9 +210,11 @@ export async function bulkCreateCatalogItems({
 export async function deleteCatalogItems({
 	ids,
 	requestKey,
+	catalog = "normal",
 }: {
 	ids: number[];
 	requestKey?: string;
+	catalog?: "normal" | "bc";
 }) {
 	const staff = await requirePermission(PERMS.CATALOG_EDIT);
 	try {
@@ -220,15 +222,21 @@ export async function deleteCatalogItems({
 			const data: {
 				deleted: number;
 				restoreId: number;
-			} = await deleteCatalogItemsCommand(ids, staff.id, requestKey);
+			} = await deleteCatalogItemsCommand(
+				ids,
+				staff.id,
+				requestKey,
+				catalog === "bc" ? "bc" : "normal",
+			);
 			await sendCatalogUpdate();
 			await logStaffActivity({
 				staffId: staff.id,
 				action: "catalog_items_delete",
-				description: `Deleted ${data.deleted} catalog offer(s): ${ids.join(", ")}`,
-				targetType: "catalog_item",
+				description: `Deleted ${data.deleted} ${catalog === "bc" ? "BC " : ""}catalog offer(s): ${ids.join(", ")}`,
+				targetType: catalog === "bc" ? "catalog_item_bc" : "catalog_item",
 			});
 			revalidatePath("/admin/catalog");
+			if (catalog === "bc") revalidatePath("/admin/catalog/builder-club");
 			return { ok: true as const, data };
 		});
 	} catch (error) {