feat: 근무/출퇴근 설정 및 현장 관리 API 구현

- 근무 설정 API (GET/PUT /settings/work)
  - 근무유형, 소정근로시간, 연장근로시간, 근무요일, 출퇴근시간, 휴게시간
- 출퇴근 설정 API (GET/PUT /settings/attendance)
  - GPS 출퇴근, 허용 반경, 본사 위치 설정
- 현장 관리 API (CRUD /sites)
  - 현장 등록/수정/삭제, 활성화된 현장 목록(셀렉트박스용)
  - GPS 좌표 기반 위치 관리

마이그레이션: work_settings, attendance_settings, sites 테이블
모델: WorkSetting, AttendanceSetting, Site (BelongsToTenant, SoftDeletes)
서비스: WorkSettingService, SiteService
Swagger 문서 및 i18n 메시지 키 추가

app/Http/Requests/V1/WorkSetting/UpdateAttendanceSettingRequest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests\V1\WorkSetting;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateAttendanceSettingRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'use_gps' => ['sometimes', 'boolean'],
+            'allowed_radius' => ['sometimes', 'integer', 'min:10', 'max:10000'],
+            'hq_address' => ['nullable', 'string', 'max:255'],
+            'hq_latitude' => ['nullable', 'numeric', 'between:-90,90'],
+            'hq_longitude' => ['nullable', 'numeric', 'between:-180,180'],
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'allowed_radius.min' => __('error.attendance_setting.radius_too_small'),
+            'allowed_radius.max' => __('error.attendance_setting.radius_too_large'),
+            'hq_latitude.between' => __('error.attendance_setting.invalid_latitude'),
+            'hq_longitude.between' => __('error.attendance_setting.invalid_longitude'),
+        ];
+    }
+}

app/Http/Requests/V1/WorkSetting/UpdateWorkSettingRequest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Http\Requests\V1\WorkSetting;
+
+use App\Models\Tenants\WorkSetting;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class UpdateWorkSettingRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'work_type' => ['sometimes', 'string', Rule::in(WorkSetting::WORK_TYPES)],
+            'standard_hours' => ['sometimes', 'integer', 'min:1', 'max:168'],
+            'overtime_hours' => ['sometimes', 'integer', 'min:0', 'max:52'],
+            'overtime_limit' => ['sometimes', 'integer', 'min:0', 'max:100'],
+            'work_days' => ['sometimes', 'array'],
+            'work_days.*' => ['string', Rule::in(['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'])],
+            'start_time' => ['sometimes', 'date_format:H:i:s'],
+            'end_time' => ['sometimes', 'date_format:H:i:s', 'after:start_time'],
+            'break_minutes' => ['sometimes', 'integer', 'min:0', 'max:180'],
+            'break_start' => ['nullable', 'date_format:H:i:s'],
+            'break_end' => ['nullable', 'date_format:H:i:s', 'after:break_start'],
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'work_type.in' => __('error.work_setting.invalid_work_type'),
+            'end_time.after' => __('error.work_setting.end_time_after_start'),
+            'break_end.after' => __('error.work_setting.break_end_after_start'),
+        ];
+    }
+}