feat: [HR/기타] 캘린더/배차/설비/재고 + DB 마이그레이션

- 캘린더 CRUD API, 배차차량 관리 API (CRUD + options)
- 배차정보 다중 행 시스템 (shipment_vehicle_dispatches)
- 설비 다중점검주기 + 부 담당자 스키마 추가
- TodayIssue 날짜 기반 조회, Stock/Client 날짜 필터
- i18n 메시지 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Requests/Shipment/ShipmentStoreRequest.php

@@ -21,7 +21,7 @@ public function rules(): array
             'scheduled_date' => 'required|date',
             'status' => 'nullable|in:scheduled,ready,shipping,completed',
             'priority' => 'nullable|in:urgent,normal,low',
-            'delivery_method' => 'nullable|in:pickup,direct,logistics',
+            'delivery_method' => 'nullable|in:pickup,direct,logistics,direct_dispatch,loading,kyungdong_delivery,daesin_delivery,kyungdong_freight,daesin_freight,self_pickup',
 
             // 발주처/배송 정보
             'client_id' => 'nullable|integer|exists:clients,id',
@@ -55,6 +55,16 @@ public function rules(): array
             // 기타
             'remarks' => 'nullable|string',
 
+            // 배차정보
+            'vehicle_dispatches' => 'nullable|array',
+            'vehicle_dispatches.*.seq' => 'nullable|integer|min:1',
+            'vehicle_dispatches.*.logistics_company' => 'nullable|string|max:100',
+            'vehicle_dispatches.*.arrival_datetime' => 'nullable|date',
+            'vehicle_dispatches.*.tonnage' => 'nullable|string|max:20',
+            'vehicle_dispatches.*.vehicle_no' => 'nullable|string|max:20',
+            'vehicle_dispatches.*.driver_contact' => 'nullable|string|max:50',
+            'vehicle_dispatches.*.remarks' => 'nullable|string',
+
             // 출하 품목
             'items' => 'nullable|array',
             'items.*.seq' => 'nullable|integer|min:1',