feat: [hr] 휴가관리 참조자 선택 기능 추가

- 휴가 신청 모달에 참조자 검색/선택 UI 추가 (Alpine.js)
- 부서별 사용자 목록에서 참조자 검색 및 녹색 칩 표시
- LeaveController 참조 배열 유효성 검증 추가
- LeaveService에서 결재선 steps에 참조자 자동 병합

app/Http/Controllers/Api/Admin/HR/LeaveController.php

@@ -53,6 +53,8 @@ public function store(Request $request): JsonResponse
             'end_date' => 'required|date|after_or_equal:start_date',
             'reason' => 'nullable|string|max:1000',
             'approval_line_id' => 'nullable|integer|exists:approval_lines,id',
+            'references' => 'nullable|array',
+            'references.*.user_id' => 'required|integer|exists:users,id',
         ]);
 
         try {

app/Services/HR/LeaveService.php

@@ -118,7 +118,7 @@ public function storeLeave(array $data): Leave
             ]);
 
             // 결재 자동 생성 + 상신 (유형에 맞는 결재양식 자동 선택)
-            $approval = $this->createLeaveApproval($leave, $tenantId, $data['approval_line_id'] ?? null);
+            $approval = $this->createLeaveApproval($leave, $tenantId, $data['approval_line_id'] ?? null, $data['references'] ?? []);
             $leave->update(['approval_id' => $approval->id]);
 
             return $leave;
@@ -992,7 +992,7 @@ public function sendPromotionNotices(array $employeeIds, string $noticeType, int
     /**
      * 휴가/근태신청/사유서 결재 자동 생성 + 상신
      */
-    private function createLeaveApproval(Leave $leave, int $tenantId, ?int $approvalLineId = null): Approval
+    private function createLeaveApproval(Leave $leave, int $tenantId, ?int $approvalLineId = null, array $references = []): Approval
     {
         $approvalService = app(ApprovalService::class);
 
@@ -1033,6 +1033,21 @@ private function createLeaveApproval(Leave $leave, int $tenantId, ?int $approval
             'step_type' => $s['step_type'] ?? $s['type'] ?? 'approval',
         ])->toArray();
 
+        // 4-1. 개별 참조자 추가 (결재선에 없는 사용자만)
+        if (! empty($references)) {
+            $existingUserIds = collect($steps)->pluck('user_id')->toArray();
+            foreach ($references as $ref) {
+                $refUserId = (int) ($ref['user_id'] ?? 0);
+                if ($refUserId && ! in_array($refUserId, $existingUserIds)) {
+                    $steps[] = [
+                        'user_id' => $refUserId,
+                        'step_type' => 'reference',
+                    ];
+                    $existingUserIds[] = $refUserId;
+                }
+            }
+        }
+
         // 5. 결재 제목 생성 (유형별 차별화)
         $typeName = Leave::TYPE_MAP[$leave->leave_type] ?? $leave->leave_type;
         $userName = $leave->user->name ?? '';

resources/views/hr/leaves/index.blade.php

@@ -272,6 +272,56 @@ class="text-xs text-blue-600 hover:underline mt-1">
                         @endif
                     </div>
 
+                    {{-- 참조 선택 --}}
+                    <div x-data="leaveReferenceSelector()" x-init="init()">
+                        <label class="block text-sm font-medium text-gray-700 mb-1">참조</label>
+                        <div class="flex flex-wrap gap-1.5 mb-2" x-show="references.length > 0" x-cloak>
+                            <template x-for="(ref, idx) in references" :key="ref.user_id">
+                                <span class="inline-flex items-center gap-1 px-2.5 py-1 bg-emerald-100 text-emerald-700 text-xs font-medium rounded-full">
+                                    <span x-text="ref.user_name"></span>
+                                    <button type="button" @click="removeReference(idx)" class="hover:text-red-500 font-bold leading-none">&times;</button>
+                                </span>
+                            </template>
+                        </div>
+                        <div class="relative">
+                            <input type="text" x-model="searchQuery" @focus="showDropdown = true" @input="showDropdown = true"
+                                   placeholder="참조자 검색 (이름/부서)..."
+                                   class="w-full px-3 py-2 border border-gray-200 rounded-lg text-sm bg-gray-50 focus:bg-white focus:ring-2 focus:ring-emerald-500 focus:border-emerald-500">
+                            <div x-show="showDropdown" @click.outside="showDropdown = false"
+                                 class="absolute z-10 mt-1 w-full bg-white border border-gray-200 rounded-lg shadow-lg max-h-48 overflow-y-auto"
+                                 x-cloak>
+                                <template x-if="loading">
+                                    <div class="p-3 text-center text-xs text-gray-400">로딩 중...</div>
+                                </template>
+                                <template x-if="!loading">
+                                    <div>
+                                        <template x-for="dept in filteredDepartments" :key="dept.department_id ?? 'none'">
+                                            <div>
+                                                <div class="px-3 py-1 bg-gray-50 text-[10px] font-semibold text-gray-500 sticky top-0" x-text="dept.department_name"></div>
+                                                <template x-for="user in dept.users" :key="user.id">
+                                                    <button type="button"
+                                                            @click="addReference(user); searchQuery = ''"
+                                                            class="w-full text-left px-3 py-1.5 text-xs hover:bg-emerald-50 flex items-center justify-between"
+                                                            :class="isAdded(user.id) ? 'opacity-40 cursor-not-allowed' : ''"
+                                                            :disabled="isAdded(user.id)">
+                                                        <span>
+                                                            <span class="font-medium" x-text="user.name"></span>
+                                                            <span class="text-gray-400 ml-1" x-text="user.position || user.job_title || ''"></span>
+                                                        </span>
+                                                        <span x-show="isAdded(user.id)" class="text-[10px] text-gray-400">추가됨</span>
+                                                    </button>
+                                                </template>
+                                            </div>
+                                        </template>
+                                        <template x-if="filteredDepartments.length === 0">
+                                            <div class="p-3 text-center text-xs text-gray-400">검색 결과가 없습니다.</div>
+                                        </template>
+                                    </div>
+                                </template>
+                            </div>
+                        </div>
+                    </div>
+
                     <div>
                         <label class="block text-sm font-medium text-gray-700 mb-1">사유</label>
                         <textarea name="reason" rows="3" maxlength="1000" placeholder="휴가 사유를 입력하세요..."
@@ -554,6 +604,72 @@ function exportLeaves() {
         window.location.href = '{{ route("api.admin.hr.leaves.export") }}?' + params.toString();
     }
 
+    // ===== 참조 선택기 (Alpine 컴포넌트) =====
+    window._leaveReferences = [];
+
+    function leaveReferenceSelector() {
+        return {
+            departments: [],
+            references: [],
+            searchQuery: '',
+            showDropdown: false,
+            loading: true,
+
+            async init() {
+                document.addEventListener('reset-leave-references', () => this.reset());
+                try {
+                    const res = await fetch('/api/admin/tenant-users/list', {
+                        headers: { 'Accept': 'application/json', 'X-CSRF-TOKEN': '{{ csrf_token() }}' }
+                    });
+                    const data = await res.json();
+                    if (data.success) this.departments = data.data;
+                } catch (e) {
+                    console.error('참조자 목록 로딩 실패:', e);
+                }
+                this.loading = false;
+            },
+
+            get filteredDepartments() {
+                if (!this.searchQuery.trim()) return this.departments;
+                const q = this.searchQuery.trim().toLowerCase();
+                return this.departments.map(dept => {
+                    const deptMatch = dept.department_name.toLowerCase().includes(q);
+                    const matchedUsers = dept.users.filter(u =>
+                        u.name.toLowerCase().includes(q) ||
+                        (u.position || '').toLowerCase().includes(q) ||
+                        (u.job_title || '').toLowerCase().includes(q)
+                    );
+                    if (deptMatch) return dept;
+                    if (matchedUsers.length > 0) return { ...dept, users: matchedUsers };
+                    return null;
+                }).filter(Boolean);
+            },
+
+            isAdded(userId) {
+                return this.references.some(r => r.user_id === userId);
+            },
+
+            addReference(user) {
+                if (this.isAdded(user.id)) return;
+                this.references.push({ user_id: user.id, user_name: user.name });
+                window._leaveReferences = this.references;
+                this.showDropdown = false;
+            },
+
+            removeReference(idx) {
+                this.references.splice(idx, 1);
+                window._leaveReferences = this.references;
+            },
+
+            reset() {
+                this.references = [];
+                this.searchQuery = '';
+                this.showDropdown = false;
+                window._leaveReferences = [];
+            },
+        };
+    }
+
     // ===== 결재선 미리보기 =====
     function previewApprovalSteps() {
         const select = document.getElementById('leaveApprovalLine');
@@ -593,6 +709,7 @@ function openLeaveModal() {
         document.getElementById('leaveForm').reset();
         document.getElementById('balanceInfo').classList.add('hidden');
         document.getElementById('leaveModal').classList.remove('hidden');
+        document.dispatchEvent(new CustomEvent('reset-leave-references'));
         previewApprovalSteps();
     }
 
@@ -651,6 +768,11 @@ function submitLeave(e) {
         const formData = new FormData(form);
         const data = Object.fromEntries(formData.entries());
 
+        // 참조자 데이터 추가
+        if (window._leaveReferences && window._leaveReferences.length) {
+            data.references = window._leaveReferences.map(r => ({ user_id: r.user_id }));
+        }
+
         const btn = document.getElementById('leaveSubmitBtn');
         btn.disabled = true;
         btn.textContent = '처리 중...';