You are a Senior Frontend Engineer.

Project:
Training Management System (TMS)

Current task:
Move Import Employees from sidebar into Users/Employees page as an action button.

Requirement:
Remove "นำเข้าพนักงาน" from sidebar navigation and add it as a button inside the Users/Employees page.

Important constraints:

- Do NOT delete /dashboard/import-employees route.
- Do NOT delete import employee API.
- Do NOT change database schema.
- Do NOT change permissions.
- Do NOT create nested sidebar menu.
- Keep Thai UI.
- Keep responsive behavior.
- Minimal-impact changes only.

Navigation change:

1. Remove root-level sidebar menu:

- นำเข้าพนักงาน

2. Do NOT add it as sidebar submenu.

3. Keep sidebar structure:

ข้อมูลหลัก
├─ พนักงาน
├─ หลักสูตร
├─ นโยบาย
└─ ประกาศ

Users/Employees page change:

1. On Users/Employees page, add action button:

Label:

- นำเข้าพนักงาน

Icon:

- Upload
  or
- FileUp

Button behavior:

- Click redirects to:
  /dashboard/import-employees

2. Place the button in page header action area.

Recommended layout:

Title:

- พนักงาน

Description:

- จัดการข้อมูลพนักงานและสิทธิ์การใช้งานระบบ

Actions:

- นำเข้าพนักงาน
- เพิ่มพนักงาน

If Add User already exists:

- Keep Add User button.
- Add Import Employees button beside it.

If space is limited on mobile:

- Stack buttons vertically or make full width.

3. Permission:

Button visible only for HRD/Admin.

Employee users should not see this button.

4. Direct route:

/dashboard/import-employees should remain protected as HRD/Admin only.

5. Responsive:

Desktop:

- Buttons align right in page header.

Mobile:

- Buttons stack full width.
- No overflow.

Files likely involved:

- src/config/nav-config.ts
- src/app/dashboard/users/page.tsx
- src/features/users/components/\*
- src/components/ui/heading.tsx or page header component if used
- src/app/dashboard/import-employees/page.tsx only if redirect/back button needed

Output Review File:

Create:
docs/management-change-import-button-in-users-review.md

Include:

1. Summary
2. Files Changed
3. Sidebar Changes
4. Users Page Changes
5. Permission Rules
6. Responsive Notes
7. Manual Test Checklist
8. Known Limitations

Manual Test Checklist:

- Sidebar no longer shows "นำเข้าพนักงาน".
- Sidebar still shows "พนักงาน".
- Users page shows "นำเข้าพนักงาน" button for HRD/Admin.
- Button links to /dashboard/import-employees.
- Add User button still works if present.
- Employee user does not see import button.
- Direct /dashboard/import-employees remains HRD/Admin only.
- Mobile layout does not overflow.

Return:

- Complete code changes with file paths.
- Content of docs/management-change-import-button-in-users-review.md.