Tab Community, tombol Bayar di navbar, logo placeholder, fix crash PIN

- Bottom navbar: Home, Pesanan, Bayar (tombol tengah ke kode bayar),
  Community, Profil; menu EnakCommunity di beranda pindah ke tab
- Image placeholder: logo Enaklo diperbesar, ilustrasi gelas dihapus
- Fix assertion Navigator saat PIN gagal karena error non-PIN: flushbar
  kini tampil lewat onFailure setelah sheet PIN tertutup (bayar, tukar,
  transfer)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/presentation/router/app_router.dart

@@ -26,6 +26,7 @@ class AppRouter extends RootStackRouter {
         AutoRoute(page: HomeRoute.page),
         AutoRoute(page: VoucherRoute.page),
         AutoRoute(page: OrderRoute.page),
+        AutoRoute(page: CommunityRoute.page),
         AutoRoute(page: ProfileRoute.page),
       ],
     ),
@@ -91,8 +92,7 @@ class AppRouter extends RootStackRouter {
     AutoRoute(page: FerrisWheelRoute.page),
     AutoRoute(page: MisteryBoxRoute.page),
 
-    // Community
-    AutoRoute(page: CommunityRoute.page),
+    // Community (halaman utamanya tab di Main)
     AutoRoute(page: CommunityDetailRoute.page),
     AutoRoute(page: CommunityPostDetailRoute.page),