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/VehicleDispatch/VehicleDispatchUpdateRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests\VehicleDispatch;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class VehicleDispatchUpdateRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'freight_cost_type' => 'nullable|in:prepaid,collect',
+            'logistics_company' => 'nullable|string|max:100',
+            'arrival_datetime' => 'nullable|date',
+            'tonnage' => 'nullable|string|max:20',
+            'vehicle_no' => 'nullable|string|max:20',
+            'driver_contact' => 'nullable|string|max:50',
+            'remarks' => 'nullable|string',
+            'supply_amount' => 'nullable|numeric|min:0',
+            'vat' => 'nullable|numeric|min:0',
+            'total_amount' => 'nullable|numeric|min:0',
+            'status' => 'nullable|in:draft,completed',
+        ];
+    }
+}