feat(admin): delete store staff; city store count links to filtered list

HQ can remove store sub-accounts from primary account detail; cities table store count jumps to /stores?cityId=.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/dukang-api/src/modules/ops/admin-stores.controller.ts

@@ -94,6 +94,16 @@ export class AdminStoreAccountsController {
   update(@Param('id') id: string, @Body() dto: UpdateStoreAccountDto) {
     return this.service.updateStoreAccount(BigInt(id), dto);
   }
+
+  @Delete(':id/staff/:staffId')
+  @HqOperation({
+    action: HqOperationAction.STORE_ACCOUNT_STAFF_DELETE,
+    refType: 'STORE_ACCOUNT',
+    refIdParam: 'staffId',
+  })
+  deleteStaff(@Param('id') id: string, @Param('staffId') staffId: string) {
+    return this.service.deleteStoreStaff(BigInt(id), BigInt(staffId));
+  }
 }
 
 @Controller('admin/store-media')