refactor: Update deactivateAccount to accept user ID directly instead of a JWT token.

Backend/src/services/usermanagement.service.ts

@@ -104,15 +104,11 @@ export class UserManagementService {
         }
     }
 
-    async deactivateAccount(token: string): Promise<DeactivateAccountResponse> {
+    async deactivateAccount(id: number): Promise<DeactivateAccountResponse> {
         try {
-            // Decode JWT token to get user ID
-            const decoded = jwt.verify(token, config.jwt.secret) as { id: number; username: string; email: string; roleCode: string };
-
-            const user = await prisma.user.findUnique({ where: { id: decoded.id } });
+            const user = await prisma.user.findUnique({ where: { id } });
             if (!user) throw new UnauthorizedError('User not found');
 
-            // Check if account is already deactivated
             if (user.is_deactivated) {
                 logger.warn('Deactivate attempt with deactivated account', { userId: user.id });
                 throw new ForbiddenError('This account has already been deactivated');