feat(user): support fixed UUID registration and enhance bulk import results

- Added support for fixed UUIDs during bulk registration (Search-first + ExternalID mapping)
- Implemented idempotency and visibility restoration for soft-deleted users
- Enhanced bulk upload UI to show 'New/Updated/Unchanged' status and modified fields
- Added logic to reclaim identifiers (login_id) from colliding records
- Added frontend E2E and backend unit tests for UUID integrity and conflict handling
- Fixed i18n, formatting, and mock tests to satisfy code-check
- Applied 'go fix' for 'omitzero' tags and general Go standards

locales/en.toml

@@ -1739,6 +1739,17 @@ additional = "Additional Affiliated/Manageable Tenants"
 primary = "Representative Affiliated Tenant"
 title = "Affiliation & Organization Info"
 
+[ui.admin.users.field]
+department = "Department"
+grade = "Grade"
+jobtitle = "Job Title"
+name = "Name"
+phone = "Phone"
+position = "Position"
+role = "Role"
+status = "Status"
+tenant = "Tenant"
+
 [ui.admin.users.list]
 add = "User Add"
 bulk_import = "Bulk Import"
@@ -2878,6 +2889,8 @@ title = "Login request status by company and app"
 export = "Export"
 
 [ui.admin.users.bulk]
+modified_fields = "Modified Fields:"
+no_changes = "No changes"
 permission_placeholder = "Select permission"
 status_placeholder = "Select status"
 

locales/ko.toml

@@ -2203,6 +2203,17 @@ additional = "추가 소속/관리 테넌트"
 primary = "대표 소속 테넌트"
 title = "소속 및 조직 정보"
 
+[ui.admin.users.field]
+department = "부서"
+grade = "직급"
+jobtitle = "직무"
+name = "이름"
+phone = "전화번호"
+position = "직책"
+role = "역할"
+status = "상태"
+tenant = "테넌트"
+
 [ui.admin.users.list]
 add = "사용자 추가"
 bulk_import = "일괄 임포트"
@@ -3300,6 +3311,8 @@ title = "회사별 앱별 로그인 요청 현황"
 export = "내보내기"
 
 [ui.admin.users.bulk]
+modified_fields = "수정 항목:"
+no_changes = "변경 사항 없음"
 permission_placeholder = "권한 선택"
 status_placeholder = "상태 선택"
 

locales/template.toml

@@ -1782,8 +1782,10 @@ acknowledge_warning = ""
 create_missing_tenant = ""
 do_move = ""
 download_template = ""
+modified_fields = ""
 move_group = ""
 move_title = ""
+no_changes = ""
 no_department = ""
 schema_warning = ""
 select_group = ""
@@ -2082,6 +2084,17 @@ additional = ""
 primary = ""
 title = ""
 
+[ui.admin.users.field]
+department = ""
+grade = ""
+jobtitle = ""
+name = ""
+phone = ""
+position = ""
+role = ""
+status = ""
+tenant = ""
+
 [ui.admin.users.list]
 add = ""
 bulk_import = ""