feat: Phase 4-3 부서 관리 시스템 구현

- DepartmentService, DepartmentController (Blade/API) 생성
- 부서 CRUD 기능 완성 (목록/생성/수정/삭제)
- FormRequest 검증 (StoreDepartmentRequest, UpdateDepartmentRequest)
- HTMX 패턴 적용 (index, create, edit, partials/table)
- 계층 구조 지원 (parent-child relationships)
- 활성/비활성 상태 관리
- 정렬 순서 관리
- Tenant Selector 통합
- Sidebar 메뉴에 부서 관리 추가

주요 기능:
- 자기 참조 방지 (parent_id validation)
- 하위 부서 존재 시 삭제 방지
- Conditional tenant filtering 적용
- Active/Inactive 필터링
- HTMX 페이지네이션 (target, includeForm 파라미터 포함)

정책:
- 모든 리스트 화면은 1페이지만 있어도 페이지네이션 표시

app/Http/Controllers/Api/Admin/DepartmentController.php

@@ -0,0 +1,157 @@
+<?php
+
+namespace App\Http\Controllers\Api\Admin;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\StoreDepartmentRequest;
+use App\Http\Requests\UpdateDepartmentRequest;
+use App\Services\DepartmentService;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class DepartmentController extends Controller
+{
+    public function __construct(
+        private readonly DepartmentService $departmentService
+    ) {}
+
+    /**
+     * 부서 목록 조회
+     */
+    public function index(Request $request): JsonResponse
+    {
+        $departments = $this->departmentService->getDepartments(
+            $request->all(),
+            $request->integer('per_page', 15)
+        );
+
+        // HTMX 요청 시 HTML 반환
+        if ($request->header('HX-Request')) {
+            $html = view('departments.partials.table', compact('departments'))->render();
+
+            return response()->json([
+                'html' => $html,
+            ]);
+        }
+
+        // 일반 요청 시 JSON 반환
+        return response()->json([
+            'success' => true,
+            'data' => $departments->items(),
+            'meta' => [
+                'current_page' => $departments->currentPage(),
+                'last_page' => $departments->lastPage(),
+                'per_page' => $departments->perPage(),
+                'total' => $departments->total(),
+            ],
+        ]);
+    }
+
+    /**
+     * 부서 생성
+     */
+    public function store(StoreDepartmentRequest $request): JsonResponse
+    {
+        $department = $this->departmentService->createDepartment($request->validated());
+
+        // HTMX 요청 시 성공 메시지와 리다이렉트 헤더 반환
+        if ($request->header('HX-Request')) {
+            return response()->json([
+                'success' => true,
+                'message' => '부서가 생성되었습니다.',
+                'redirect' => route('departments.index'),
+            ]);
+        }
+
+        return response()->json([
+            'success' => true,
+            'message' => '부서가 생성되었습니다.',
+            'data' => $department,
+        ], 201);
+    }
+
+    /**
+     * 특정 부서 조회
+     */
+    public function show(Request $request, int $id): JsonResponse
+    {
+        $department = $this->departmentService->getDepartmentById($id);
+
+        if (!$department) {
+            return response()->json([
+                'success' => false,
+                'message' => '부서를 찾을 수 없습니다.',
+            ], 404);
+        }
+
+        // HTMX 요청 시 HTML 반환
+        if ($request->header('HX-Request')) {
+            return response()->json([
+                'html' => view('departments.partials.detail', compact('department'))->render(),
+            ]);
+        }
+
+        return response()->json([
+            'success' => true,
+            'data' => $department,
+        ]);
+    }
+
+    /**
+     * 부서 수정
+     */
+    public function update(UpdateDepartmentRequest $request, int $id): JsonResponse
+    {
+        $result = $this->departmentService->updateDepartment($id, $request->validated());
+
+        if (!$result) {
+            return response()->json([
+                'success' => false,
+                'message' => '부서 수정에 실패했습니다.',
+            ], 400);
+        }
+
+        // HTMX 요청 시 성공 메시지와 리다이렉트 헤더 반환
+        if ($request->header('HX-Request')) {
+            return response()->json([
+                'success' => true,
+                'message' => '부서가 수정되었습니다.',
+                'redirect' => route('departments.index'),
+            ]);
+        }
+
+        return response()->json([
+            'success' => true,
+            'message' => '부서가 수정되었습니다.',
+        ]);
+    }
+
+    /**
+     * 부서 삭제 (Soft Delete)
+     */
+    public function destroy(Request $request, int $id): JsonResponse
+    {
+        $result = $this->departmentService->deleteDepartment($id);
+
+        if (!$result) {
+            return response()->json([
+                'success' => false,
+                'message' => '부서 삭제에 실패했습니다. (하위 부서가 존재할 수 있습니다)',
+            ], 400);
+        }
+
+        // HTMX 요청 시 테이블 행 제거 트리거
+        if ($request->header('HX-Request')) {
+            return response()->json([
+                'success' => true,
+                'message' => '부서가 삭제되었습니다.',
+                'action' => 'remove',
+            ]);
+        }
+
+        return response()->json([
+            'success' => true,
+            'message' => '부서가 삭제되었습니다.',
+        ]);
+    }
+}

app/Http/Controllers/DepartmentController.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Services\DepartmentService;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class DepartmentController extends Controller
+{
+    public function __construct(
+        private readonly DepartmentService $departmentService
+    ) {}
+
+    /**
+     * 부서 목록 (Blade 화면만)
+     */
+    public function index(Request $request): View
+    {
+        return view('departments.index');
+    }
+
+    /**
+     * 부서 생성 화면
+     */
+    public function create(): View
+    {
+        $departments = $this->departmentService->getActiveDepartments();
+
+        return view('departments.create', compact('departments'));
+    }
+
+    /**
+     * 부서 수정 화면
+     */
+    public function edit(int $id): View
+    {
+        $department = $this->departmentService->getDepartmentById($id);
+
+        if (!$department) {
+            abort(404, '부서를 찾을 수 없습니다.');
+        }
+
+        $departments = $this->departmentService->getActiveDepartments();
+
+        return view('departments.edit', compact('department', 'departments'));
+    }
+}

app/Http/Requests/StoreDepartmentRequest.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class StoreDepartmentRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true; // 권한 체크는 middleware에서 처리
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        $tenantId = session('selected_tenant_id');
+
+        return [
+            'code' => [
+                'required',
+                'string',
+                'max:50',
+                Rule::unique('departments', 'code')
+                    ->where('tenant_id', $tenantId),
+            ],
+            'name' => 'required|string|max:100',
+            'description' => 'nullable|string|max:500',
+            'parent_id' => 'nullable|exists:departments,id',
+            'is_active' => 'nullable|boolean',
+            'sort_order' => 'nullable|integer|min:0',
+        ];
+    }
+
+    /**
+     * Get custom attributes for validator errors.
+     */
+    public function attributes(): array
+    {
+        return [
+            'code' => '부서 코드',
+            'name' => '부서명',
+            'description' => '설명',
+            'parent_id' => '상위 부서',
+            'is_active' => '활성 상태',
+            'sort_order' => '정렬 순서',
+        ];
+    }
+
+    /**
+     * Get the error messages for the defined validation rules.
+     */
+    public function messages(): array
+    {
+        return [
+            'code.required' => '부서 코드는 필수입니다.',
+            'code.unique' => '이미 존재하는 부서 코드입니다.',
+            'code.max' => '부서 코드는 최대 50자까지 입력 가능합니다.',
+            'name.required' => '부서명은 필수입니다.',
+            'name.max' => '부서명은 최대 100자까지 입력 가능합니다.',
+            'description.max' => '설명은 최대 500자까지 입력 가능합니다.',
+            'parent_id.exists' => '유효하지 않은 상위 부서입니다.',
+            'sort_order.min' => '정렬 순서는 0 이상이어야 합니다.',
+        ];
+    }
+}

app/Http/Requests/UpdateDepartmentRequest.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class UpdateDepartmentRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true; // 권한 체크는 middleware에서 처리
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        $tenantId = session('selected_tenant_id');
+        $departmentId = $this->route('id'); // URL 파라미터에서 department ID 가져오기
+
+        return [
+            'code' => [
+                'required',
+                'string',
+                'max:50',
+                Rule::unique('departments', 'code')
+                    ->where('tenant_id', $tenantId)
+                    ->ignore($departmentId),
+            ],
+            'name' => 'required|string|max:100',
+            'description' => 'nullable|string|max:500',
+            'parent_id' => [
+                'nullable',
+                'exists:departments,id',
+                Rule::notIn([$departmentId]), // 자기 자신을 상위 부서로 설정 불가
+            ],
+            'is_active' => 'nullable|boolean',
+            'sort_order' => 'nullable|integer|min:0',
+        ];
+    }
+
+    /**
+     * Get custom attributes for validator errors.
+     */
+    public function attributes(): array
+    {
+        return [
+            'code' => '부서 코드',
+            'name' => '부서명',
+            'description' => '설명',
+            'parent_id' => '상위 부서',
+            'is_active' => '활성 상태',
+            'sort_order' => '정렬 순서',
+        ];
+    }
+
+    /**
+     * Get the error messages for the defined validation rules.
+     */
+    public function messages(): array
+    {
+        return [
+            'code.required' => '부서 코드는 필수입니다.',
+            'code.unique' => '이미 존재하는 부서 코드입니다.',
+            'code.max' => '부서 코드는 최대 50자까지 입력 가능합니다.',
+            'name.required' => '부서명은 필수입니다.',
+            'name.max' => '부서명은 최대 100자까지 입력 가능합니다.',
+            'description.max' => '설명은 최대 500자까지 입력 가능합니다.',
+            'parent_id.exists' => '유효하지 않은 상위 부서입니다.',
+            'parent_id.not_in' => '자기 자신을 상위 부서로 설정할 수 없습니다.',
+            'sort_order.min' => '정렬 순서는 0 이상이어야 합니다.',
+        ];
+    }
+}

app/Services/DepartmentService.php

@@ -0,0 +1,191 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\Tenants\Department;
+use Illuminate\Contracts\Pagination\LengthAwarePaginator;
+use Illuminate\Database\Eloquent\Collection;
+
+class DepartmentService
+{
+    /**
+     * 부서 목록 조회 (페이지네이션)
+     */
+    public function getDepartments(array $filters = [], int $perPage = 15): LengthAwarePaginator
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $query = Department::query()->with('parent');
+
+        // Tenant 필터링 (선택된 경우에만)
+        if ($tenantId) {
+            $query->where('tenant_id', $tenantId);
+        }
+
+        // 검색 필터
+        if (!empty($filters['search'])) {
+            $search = $filters['search'];
+            $query->where(function ($q) use ($search) {
+                $q->where('name', 'like', "%{$search}%")
+                  ->orWhere('code', 'like', "%{$search}%")
+                  ->orWhere('description', 'like', "%{$search}%");
+            });
+        }
+
+        // 활성 상태 필터
+        if (isset($filters['is_active'])) {
+            $query->where('is_active', $filters['is_active']);
+        }
+
+        // 정렬
+        $sortBy = $filters['sort_by'] ?? 'sort_order';
+        $sortDirection = $filters['sort_direction'] ?? 'asc';
+        $query->orderBy($sortBy, $sortDirection);
+
+        return $query->paginate($perPage);
+    }
+
+    /**
+     * 특정 부서 조회
+     */
+    public function getDepartmentById(int $id): ?Department
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $query = Department::query()->with(['parent', 'children']);
+
+        // Tenant 필터링 (선택된 경우에만)
+        if ($tenantId) {
+            $query->where('tenant_id', $tenantId);
+        }
+
+        return $query->find($id);
+    }
+
+    /**
+     * 부서 생성
+     */
+    public function createDepartment(array $data): Department
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $department = Department::create([
+            'tenant_id' => $tenantId,
+            'parent_id' => $data['parent_id'] ?? null,
+            'code' => $data['code'],
+            'name' => $data['name'],
+            'description' => $data['description'] ?? null,
+            'is_active' => $data['is_active'] ?? true,
+            'sort_order' => $data['sort_order'] ?? 0,
+            'created_by' => auth()->id(),
+        ]);
+
+        return $department->fresh(['parent']);
+    }
+
+    /**
+     * 부서 수정
+     */
+    public function updateDepartment(int $id, array $data): bool
+    {
+        $department = $this->getDepartmentById($id);
+
+        if (!$department) {
+            return false;
+        }
+
+        // 자기 자신을 상위 부서로 설정하는 것 방지
+        if (isset($data['parent_id']) && $data['parent_id'] == $id) {
+            return false;
+        }
+
+        $updated = $department->update([
+            'parent_id' => $data['parent_id'] ?? $department->parent_id,
+            'code' => $data['code'] ?? $department->code,
+            'name' => $data['name'] ?? $department->name,
+            'description' => $data['description'] ?? $department->description,
+            'is_active' => $data['is_active'] ?? $department->is_active,
+            'sort_order' => $data['sort_order'] ?? $department->sort_order,
+            'updated_by' => auth()->id(),
+        ]);
+
+        return $updated;
+    }
+
+    /**
+     * 부서 삭제 (Soft Delete)
+     */
+    public function deleteDepartment(int $id): bool
+    {
+        $department = $this->getDepartmentById($id);
+
+        if (!$department) {
+            return false;
+        }
+
+        // 하위 부서가 있는 경우 삭제 불가
+        if ($department->children()->count() > 0) {
+            return false;
+        }
+
+        $department->deleted_by = auth()->id();
+        $department->save();
+
+        return $department->delete();
+    }
+
+    /**
+     * 부서 코드 중복 체크
+     */
+    public function isCodeExists(string $code, ?int $excludeId = null): bool
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $query = Department::where('tenant_id', $tenantId)
+            ->where('code', $code);
+
+        if ($excludeId) {
+            $query->where('id', '!=', $excludeId);
+        }
+
+        return $query->exists();
+    }
+
+    /**
+     * 활성 부서 목록 (드롭다운용)
+     */
+    public function getActiveDepartments(): Collection
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $query = Department::query()->where('is_active', true);
+
+        // Tenant 필터링 (선택된 경우에만)
+        if ($tenantId) {
+            $query->where('tenant_id', $tenantId);
+        }
+
+        return $query->orderBy('sort_order')->orderBy('name')->get(['id', 'parent_id', 'code', 'name']);
+    }
+
+    /**
+     * 부서 통계
+     */
+    public function getDepartmentStats(): array
+    {
+        $tenantId = session('selected_tenant_id');
+
+        $baseQuery = Department::query();
+
+        // Tenant 필터링 (선택된 경우에만)
+        if ($tenantId) {
+            $baseQuery->where('tenant_id', $tenantId);
+        }
+
+        return [
+            'total' => (clone $baseQuery)->count(),
+            'active' => (clone $baseQuery)->where('is_active', true)->count(),
+            'inactive' => (clone $baseQuery)->where('is_active', false)->count(),
+        ];
+    }
+}

resources/views/departments/create.blade.php

@@ -0,0 +1,134 @@
+@extends('layouts.app')
+
+@section('title', '부서 생성')
+
+@section('content')
+<div class="container mx-auto max-w-4xl">
+    <!-- 페이지 헤더 -->
+    <div class="flex justify-between items-center mb-6">
+        <h1 class="text-2xl font-bold text-gray-800">🏢 부서 생성</h1>
+        <a href="{{ route('departments.index') }}" class="text-gray-600 hover:text-gray-800">
+            ← 목록으로
+        </a>
+    </div>
+
+    <!-- 폼 영역 -->
+    <div class="bg-white rounded-lg shadow-sm p-6">
+        <form id="departmentForm"
+              hx-post="/api/admin/departments"
+              hx-headers='{"X-CSRF-TOKEN": "{{ csrf_token() }}"}'
+              hx-swap="none">
+
+            <!-- 기본 정보 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">기본 정보</h2>
+                <div class="grid grid-cols-2 gap-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">
+                            부서 코드 <span class="text-red-500">*</span>
+                        </label>
+                        <input type="text" name="code" required maxlength="50"
+                               placeholder="예: DEV, SALES"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">최대 50자까지 입력 가능합니다.</p>
+                    </div>
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">
+                            부서명 <span class="text-red-500">*</span>
+                        </label>
+                        <input type="text" name="name" required maxlength="100"
+                               placeholder="예: 개발팀, 영업팀"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">최대 100자까지 입력 가능합니다.</p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 부서 설정 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">부서 설정</h2>
+                <div class="grid grid-cols-2 gap-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">상위 부서</label>
+                        <select name="parent_id" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                            <option value="">없음 (최상위 부서)</option>
+                            @foreach($departments as $dept)
+                                <option value="{{ $dept->id }}">{{ $dept->name }} ({{ $dept->code }})</option>
+                            @endforeach
+                        </select>
+                    </div>
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">정렬 순서</label>
+                        <input type="number" name="sort_order" value="0" min="0"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">숫자가 작을수록 먼저 표시됩니다.</p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 설명 및 상태 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">추가 정보</h2>
+                <div class="space-y-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">설명</label>
+                        <textarea name="description" rows="3" maxlength="500"
+                                  placeholder="부서에 대한 설명을 입력하세요"
+                                  class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"></textarea>
+                        <p class="text-xs text-gray-500 mt-1">최대 500자까지 입력 가능합니다.</p>
+                    </div>
+                    <div class="flex items-center">
+                        <input type="checkbox" name="is_active" value="1" checked
+                               class="h-4 w-4 text-blue-600 rounded focus:ring-2 focus:ring-blue-500">
+                        <label class="ml-2 text-sm text-gray-700">활성 상태</label>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 버튼 영역 -->
+            <div class="flex justify-end gap-3">
+                <a href="{{ route('departments.index') }}"
+                   class="px-6 py-2 border border-gray-300 rounded-lg text-gray-700 hover:bg-gray-50 transition">
+                    취소
+                </a>
+                <button type="submit"
+                        class="px-6 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg transition">
+                    생성
+                </button>
+            </div>
+        </form>
+    </div>
+</div>
+@endsection
+
+@push('scripts')
+<script src="https://unpkg.com/htmx.org@1.9.10"></script>
+<script>
+    // HTMX 응답 처리
+    document.body.addEventListener('htmx:afterRequest', function(event) {
+        if (event.detail.target.id === 'departmentForm') {
+            const response = JSON.parse(event.detail.xhr.response);
+            if (response.success) {
+                alert(response.message);
+                window.location.href = response.redirect;
+            } else {
+                alert('오류: ' + (response.message || '부서 생성에 실패했습니다.'));
+            }
+        }
+    });
+
+    // 에러 처리
+    document.body.addEventListener('htmx:responseError', function(event) {
+        if (event.detail.xhr.status === 422) {
+            const errors = JSON.parse(event.detail.xhr.response).errors;
+            let errorMsg = '입력 오류:\n';
+            for (let field in errors) {
+                errorMsg += '- ' + errors[field].join('\n') + '\n';
+            }
+            alert(errorMsg);
+        } else {
+            alert('서버 오류가 발생했습니다.');
+        }
+    });
+</script>
+@endpush

resources/views/departments/edit.blade.php

@@ -0,0 +1,166 @@
+@extends('layouts.app')
+
+@section('title', '부서 수정')
+
+@section('content')
+<div class="container mx-auto max-w-4xl">
+    <!-- 페이지 헤더 -->
+    <div class="flex justify-between items-center mb-6">
+        <h1 class="text-2xl font-bold text-gray-800">🏢 부서 수정</h1>
+        <a href="{{ route('departments.index') }}" class="text-gray-600 hover:text-gray-800">
+            ← 목록으로
+        </a>
+    </div>
+
+    <!-- 폼 영역 -->
+    <div class="bg-white rounded-lg shadow-sm p-6">
+        <form id="departmentForm"
+              hx-post="/api/admin/departments/{{ $department->id }}"
+              hx-headers='{"X-CSRF-TOKEN": "{{ csrf_token() }}"}'
+              hx-swap="none">
+            <input type="hidden" name="_method" value="PUT">
+
+            <!-- 기본 정보 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">기본 정보</h2>
+                <div class="grid grid-cols-2 gap-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">
+                            부서 코드 <span class="text-red-500">*</span>
+                        </label>
+                        <input type="text" name="code" required maxlength="50"
+                               value="{{ old('code', $department->code) }}"
+                               placeholder="예: DEV, SALES"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">최대 50자까지 입력 가능합니다.</p>
+                    </div>
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">
+                            부서명 <span class="text-red-500">*</span>
+                        </label>
+                        <input type="text" name="name" required maxlength="100"
+                               value="{{ old('name', $department->name) }}"
+                               placeholder="예: 개발팀, 영업팀"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">최대 100자까지 입력 가능합니다.</p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 부서 설정 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">부서 설정</h2>
+                <div class="grid grid-cols-2 gap-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">상위 부서</label>
+                        <select name="parent_id" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                            <option value="">없음 (최상위 부서)</option>
+                            @foreach($departments as $dept)
+                                @if($dept->id !== $department->id)
+                                    <option value="{{ $dept->id }}" {{ old('parent_id', $department->parent_id) == $dept->id ? 'selected' : '' }}>
+                                        {{ $dept->name }} ({{ $dept->code }})
+                                    </option>
+                                @endif
+                            @endforeach
+                        </select>
+                        <p class="text-xs text-gray-500 mt-1">자기 자신은 선택할 수 없습니다.</p>
+                    </div>
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">정렬 순서</label>
+                        <input type="number" name="sort_order" min="0"
+                               value="{{ old('sort_order', $department->sort_order) }}"
+                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                        <p class="text-xs text-gray-500 mt-1">숫자가 작을수록 먼저 표시됩니다.</p>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 설명 및 상태 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">추가 정보</h2>
+                <div class="space-y-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 mb-1">설명</label>
+                        <textarea name="description" rows="3" maxlength="500"
+                                  placeholder="부서에 대한 설명을 입력하세요"
+                                  class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">{{ old('description', $department->description) }}</textarea>
+                        <p class="text-xs text-gray-500 mt-1">최대 500자까지 입력 가능합니다.</p>
+                    </div>
+                    <div class="flex items-center">
+                        <input type="checkbox" name="is_active" value="1" {{ old('is_active', $department->is_active) ? 'checked' : '' }}
+                               class="h-4 w-4 text-blue-600 rounded focus:ring-2 focus:ring-blue-500">
+                        <label class="ml-2 text-sm text-gray-700">활성 상태</label>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 부서 정보 -->
+            <div class="mb-8">
+                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">부서 정보</h2>
+                <div class="grid grid-cols-2 gap-4 text-sm">
+                    <div>
+                        <span class="text-gray-600">생성일:</span>
+                        <span class="font-medium">{{ $department->created_at->format('Y-m-d H:i') }}</span>
+                    </div>
+                    <div>
+                        <span class="text-gray-600">수정일:</span>
+                        <span class="font-medium">{{ $department->updated_at->format('Y-m-d H:i') }}</span>
+                    </div>
+                    <div>
+                        <span class="text-gray-600">하위 부서 수:</span>
+                        <span class="font-medium">{{ $department->children->count() }}개</span>
+                    </div>
+                    <div>
+                        <span class="text-gray-600">부서 ID:</span>
+                        <span class="font-medium">#{{ $department->id }}</span>
+                    </div>
+                </div>
+            </div>
+
+            <!-- 버튼 영역 -->
+            <div class="flex justify-end gap-3">
+                <a href="{{ route('departments.index') }}"
+                   class="px-6 py-2 border border-gray-300 rounded-lg text-gray-700 hover:bg-gray-50 transition">
+                    취소
+                </a>
+                <button type="submit"
+                        class="px-6 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg transition">
+                    수정
+                </button>
+            </div>
+        </form>
+    </div>
+</div>
+@endsection
+
+@push('scripts')
+<script src="https://unpkg.com/htmx.org@1.9.10"></script>
+<script>
+    // HTMX 응답 처리
+    document.body.addEventListener('htmx:afterRequest', function(event) {
+        if (event.detail.target.id === 'departmentForm') {
+            const response = JSON.parse(event.detail.xhr.response);
+            if (response.success) {
+                alert(response.message);
+                window.location.href = response.redirect;
+            } else {
+                alert('오류: ' + (response.message || '부서 수정에 실패했습니다.'));
+            }
+        }
+    });
+
+    // 에러 처리
+    document.body.addEventListener('htmx:responseError', function(event) {
+        if (event.detail.xhr.status === 422) {
+            const errors = JSON.parse(event.detail.xhr.response).errors;
+            let errorMsg = '입력 오류:\n';
+            for (let field in errors) {
+                errorMsg += '- ' + errors[field].join('\n') + '\n';
+            }
+            alert(errorMsg);
+        } else {
+            alert('서버 오류가 발생했습니다.');
+        }
+    });
+</script>
+@endpush

resources/views/departments/index.blade.php

@@ -0,0 +1,92 @@
+@extends('layouts.app')
+
+@section('title', '부서 관리')
+
+@section('content')
+    <!-- Tenant Selector -->
+    @include('partials.tenant-selector')
+
+    <!-- 페이지 헤더 -->
+    <div class="flex justify-between items-center mt-6 mb-6">
+        <h1 class="text-2xl font-bold text-gray-800">🏢 부서 관리</h1>
+        <a href="{{ route('departments.create') }}" class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg transition">
+            + 새 부서
+        </a>
+    </div>
+
+    <!-- 필터 영역 -->
+    <div class="bg-white rounded-lg shadow-sm p-4 mb-6">
+        <form id="filterForm" class="flex gap-4">
+            <!-- 검색 -->
+            <div class="flex-1">
+                <input type="text"
+                       name="search"
+                       placeholder="부서명, 코드, 설명으로 검색..."
+                       class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+            </div>
+
+            <!-- 활성 상태 필터 -->
+            <div class="w-48">
+                <select name="is_active" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                    <option value="">전체 상태</option>
+                    <option value="1">활성</option>
+                    <option value="0">비활성</option>
+                </select>
+            </div>
+
+            <!-- 검색 버튼 -->
+            <button type="submit" class="bg-gray-600 hover:bg-gray-700 text-white px-6 py-2 rounded-lg transition">
+                검색
+            </button>
+        </form>
+    </div>
+
+    <!-- 테이블 영역 (HTMX로 로드) -->
+    <div id="department-table"
+         hx-get="/api/admin/departments"
+         hx-trigger="load, filterSubmit from:body"
+         hx-include="#filterForm"
+         hx-headers='{"X-CSRF-TOKEN": "{{ csrf_token() }}"}'
+         class="bg-white rounded-lg shadow-sm overflow-hidden">
+        <!-- 로딩 스피너 -->
+        <div class="flex justify-center items-center p-12">
+            <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600"></div>
+        </div>
+    </div>
+@endsection
+
+@push('scripts')
+<script src="https://unpkg.com/htmx.org@1.9.10"></script>
+<script>
+    // 폼 제출 시 HTMX 이벤트 트리거
+    document.getElementById('filterForm').addEventListener('submit', function(e) {
+        e.preventDefault();
+        htmx.trigger('#department-table', 'filterSubmit');
+    });
+
+    // HTMX 응답 처리
+    document.body.addEventListener('htmx:afterSwap', function(event) {
+        if (event.detail.target.id === 'department-table') {
+            const response = JSON.parse(event.detail.xhr.response);
+            if (response.html) {
+                event.detail.target.innerHTML = response.html;
+            }
+        }
+    });
+
+    // 삭제 확인
+    window.confirmDelete = function(id, name) {
+        if (confirm(`"${name}" 부서를 삭제하시겠습니까?\n\n하위 부서가 있으면 삭제할 수 없습니다.`)) {
+            htmx.ajax('DELETE', `/api/admin/departments/${id}`, {
+                target: '#department-table',
+                swap: 'none',
+                headers: {
+                    'X-CSRF-TOKEN': '{{ csrf_token() }}'
+                }
+            }).then(() => {
+                htmx.trigger('#department-table', 'filterSubmit');
+            });
+        }
+    };
+</script>
+@endpush

resources/views/departments/partials/table.blade.php

@@ -0,0 +1,65 @@
+<table class="w-full">
+    <thead class="bg-gray-50 border-b">
+        <tr>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">부서 코드</th>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">부서명</th>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">상위 부서</th>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">상태</th>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">정렬순서</th>
+            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">작업</th>
+        </tr>
+    </thead>
+    <tbody class="bg-white divide-y divide-gray-200">
+        @forelse($departments as $department)
+            <tr class="hover:bg-gray-50">
+                <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
+                    {{ $department->code }}
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap">
+                    <div class="text-sm font-medium text-gray-900">{{ $department->name }}</div>
+                    @if($department->description)
+                        <div class="text-sm text-gray-500">{{ Str::limit($department->description, 50) }}</div>
+                    @endif
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
+                    {{ $department->parent?->name ?? '-' }}
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap">
+                    @if($department->is_active)
+                        <span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-green-100 text-green-800">
+                            활성
+                        </span>
+                    @else
+                        <span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-gray-100 text-gray-800">
+                            비활성
+                        </span>
+                    @endif
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
+                    {{ $department->sort_order }}
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap text-sm font-medium">
+                    <a href="{{ route('departments.edit', $department->id) }}" class="text-blue-600 hover:text-blue-900 mr-3">
+                        수정
+                    </a>
+                    <button onclick="confirmDelete({{ $department->id }}, '{{ $department->name }}')" class="text-red-600 hover:text-red-900">
+                        삭제
+                    </button>
+                </td>
+            </tr>
+        @empty
+            <tr>
+                <td colspan="6" class="px-6 py-4 text-center text-gray-500">
+                    부서가 없습니다.
+                </td>
+            </tr>
+        @endforelse
+    </tbody>
+</table>
+
+<!-- 페이지네이션 -->
+@include('partials.pagination', [
+    'paginator' => $departments,
+    'target' => '#department-table',
+    'includeForm' => '#filterForm'
+])

resources/views/partials/sidebar.blade.php

@@ -55,8 +55,8 @@ class="flex items-center gap-3 px-4 py-3 rounded-lg text-gray-700 hover:bg-gray-
 
                 <!-- 부서 관리 -->
                 <li>
-                    <a href="#"
-                       class="flex items-center gap-3 px-4 py-3 rounded-lg text-gray-700 hover:bg-gray-100">
+                    <a href="{{ route('departments.index') }}"
+                       class="flex items-center gap-3 px-4 py-3 rounded-lg text-gray-700 hover:bg-gray-100 {{ request()->routeIs('departments.*') ? 'bg-primary text-white hover:bg-primary' : '' }}">
                         <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                             <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4" />
                         </svg>

routes/api.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Http\Controllers\Api\Admin\DepartmentController;
 use App\Http\Controllers\Api\Admin\RoleController;
 use App\Http\Controllers\Api\Admin\TenantController;
 use Illuminate\Support\Facades\Route;
@@ -40,4 +41,13 @@
         Route::put('/{id}', [RoleController::class, 'update'])->name('update');
         Route::delete('/{id}', [RoleController::class, 'destroy'])->name('destroy');
     });
+
+    // 부서 관리 API
+    Route::prefix('departments')->name('departments.')->group(function () {
+        Route::get('/', [DepartmentController::class, 'index'])->name('index');
+        Route::post('/', [DepartmentController::class, 'store'])->name('store');
+        Route::get('/{id}', [DepartmentController::class, 'show'])->name('show');
+        Route::put('/{id}', [DepartmentController::class, 'update'])->name('update');
+        Route::delete('/{id}', [DepartmentController::class, 'destroy'])->name('destroy');
+    });
 });

routes/web.php

@@ -1,6 +1,7 @@
 <?php
 
 use App\Http\Controllers\Auth\LoginController;
+use App\Http\Controllers\DepartmentController;
 use App\Http\Controllers\RoleController;
 use App\Http\Controllers\TenantController;
 use Illuminate\Support\Facades\Route;
@@ -42,6 +43,13 @@
         Route::get('/{id}/edit', [RoleController::class, 'edit'])->name('edit');
     });
 
+    // 부서 관리 (Blade 화면만)
+    Route::prefix('departments')->name('departments.')->group(function () {
+        Route::get('/', [DepartmentController::class, 'index'])->name('index');
+        Route::get('/create', [DepartmentController::class, 'create'])->name('create');
+        Route::get('/{id}/edit', [DepartmentController::class, 'edit'])->name('edit');
+    });
+
     // 대시보드
     Route::get('/dashboard', function () {
         return view('dashboard.index');