refactor(payments): one canonical catalog order for storefront, offer, admin; admin active/all toggle

The wallet storefront listed products in creation order — its purchases and its
chip-exchange values were unsorted, unlike the admin console and the public offer.
Extract the ordering (chip packs first by rouble price, then chip-priced values
grouped hints → no-ads → combo → tournament and by chip price) into one comparator,
compareCatalogRank over a small rank key, and apply it at all three sites
(projectCatalog, projectOfferPricing, SortAdminCatalog) — so the subgroup ranking
(valueGroup) and the full order now live in one place. The rewarded "watch for
chips" CTA is a wallet-driven element rendered above the packs, so it is unaffected
and stays on top.

Also add the admin catalog active/all toggle: AdminCatalog takes includeInactive,
the console shows active products by default and ?all=1 lists archived ones too
(the detail and grant forms keep loading all products).

Tests: a storefront canonical-order unit test (reproduced the unsorted bug first);
an integration test for the active/all toggle. Existing offer/admin order tests
unchanged — behaviour preserved.

backend/internal/payments/catalog_admin.go

@@ -1,7 +1,6 @@
 package payments
 
 import (
-	"cmp"
 	"context"
 	"errors"
 	"fmt"
@@ -144,10 +143,12 @@ func validateProduct(in ProductInput, sellable bool) error {
 	return nil
 }
 
-// AdminCatalog lists every product (active and archived) with its composition, prices and whether it
-// has been transacted, for the admin editor. Read uncached, straight from the catalog tables.
-func (s *Service) AdminCatalog(ctx context.Context) ([]AdminProduct, error) {
-	return s.store.adminCatalog(ctx)
+// AdminCatalog lists products with their composition, prices and whether each has been transacted,
+// for the admin editor. includeInactive adds the archived products to the active ones (the console's
+// active/all toggle); with it false only active products are returned. Read uncached, straight from
+// the catalog tables.
+func (s *Service) AdminCatalog(ctx context.Context, includeInactive bool) ([]AdminProduct, error) {
+	return s.store.adminCatalog(ctx, includeInactive)
 }
 
 // SortAdminCatalog orders an admin catalog list in place the same way the public offer lists products
@@ -157,18 +158,7 @@ func (s *Service) AdminCatalog(ctx context.Context) ([]AdminProduct, error) {
 // products the same as active ones (the admin list shows both).
 func SortAdminCatalog(products []AdminProduct) {
 	slices.SortStableFunc(products, func(a, b AdminProduct) int {
-		if pa, pb := adminIsPack(a), adminIsPack(b); pa != pb {
-			if pa {
-				return -1 // packs (sales) before values (chip exchange)
-			}
-			return 1
-		} else if pa {
-			return cmp.Compare(adminPriceAmount(a, string(SourceDirect), CurrencyRUB), adminPriceAmount(b, string(SourceDirect), CurrencyRUB))
-		}
-		if d := cmp.Compare(adminValueGroup(a), adminValueGroup(b)); d != 0 {
-			return d
-		}
-		return cmp.Compare(adminPriceAmount(a, "", CurrencyChip), adminPriceAmount(b, "", CurrencyChip))
+		return compareCatalogRank(adminRank(a), adminRank(b))
 	})
 }