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/Controllers/Api/V1/CalendarController.php

@@ -51,4 +51,56 @@ public function summary(Request $request)
             );
         }, __('message.fetched'));
     }
+
+    /**
+     * 일정 등록
+     */
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'title' => 'required|string|max:200',
+            'description' => 'nullable|string|max:1000',
+            'start_date' => 'required|date_format:Y-m-d',
+            'end_date' => 'required|date_format:Y-m-d|after_or_equal:start_date',
+            'start_time' => 'nullable|date_format:H:i',
+            'end_time' => 'nullable|date_format:H:i',
+            'is_all_day' => 'boolean',
+            'color' => 'nullable|string|max:20',
+        ]);
+
+        return ApiResponse::handle(function () use ($validated) {
+            return $this->calendarService->createSchedule($validated);
+        }, __('message.created'));
+    }
+
+    /**
+     * 일정 수정
+     */
+    public function update(Request $request, int $id)
+    {
+        $validated = $request->validate([
+            'title' => 'required|string|max:200',
+            'description' => 'nullable|string|max:1000',
+            'start_date' => 'required|date_format:Y-m-d',
+            'end_date' => 'required|date_format:Y-m-d|after_or_equal:start_date',
+            'start_time' => 'nullable|date_format:H:i',
+            'end_time' => 'nullable|date_format:H:i',
+            'is_all_day' => 'boolean',
+            'color' => 'nullable|string|max:20',
+        ]);
+
+        return ApiResponse::handle(function () use ($id, $validated) {
+            return $this->calendarService->updateSchedule($id, $validated);
+        }, __('message.updated'));
+    }
+
+    /**
+     * 일정 삭제
+     */
+    public function destroy(int $id)
+    {
+        return ApiResponse::handle(function () use ($id) {
+            return $this->calendarService->deleteSchedule($id);
+        }, __('message.deleted'));
+    }
 }