feat: Denomination Master admin UI (modern fintech design)

Standalone Angular page to manage currency notes & coins: hero + stat
tiles, notes/coins card grids, slide-in drawer for add/edit. Supports
CRUD, enable/disable, and client-side duplicate (denomination+kind)
validation with snackbar feedback. Added route and Admin menu link.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/system/system-routing.module.ts

@@ -56,6 +56,7 @@ import { ViewRoleComponent } from './roles-and-permissions/view-role/view-role.c
 import { SystemComponent } from './system.component';
 import { SystemInformationComponent } from './system-information/system-information.component';
 import { AboutUsComponent } from './about-us/about-us.component';
+import { DenominationMasterComponent } from './denomination-master/denomination-master.component';
 
 /** Custom Resolvers */
 import { AccountNumberPreferencesResolver } from './account-number-preferences/account-number-preferences.resolver';
@@ -614,6 +615,16 @@ const routes: Routes = [
               }
             }
           ]
+        },
+        {
+          path: 'denomination-master',
+          data: { title: 'Denomination Master', breadcrumb: 'Denomination Master' },
+          children: [
+            {
+              path: '',
+              component: DenominationMasterComponent
+            }
+          ]
         }
       ]
     }