feat: 작업일지/중간검사 설정을 ProcessStep → Process 레벨로 이동

- Process 모델에 document_template_id, needs_work_log, work_log_template_id 추가
- ProcessStep에서 해당 필드 제거
- WorkOrderService의 검사 관련 3개 메서드(getInspectionTemplate, resolveInspectionDocument, createInspectionDocument) 공정 레벨 참조로 변경
- ProcessService eager loading에 documentTemplate, workLogTemplateRelation 추가
- FormRequest 검증 규칙 이동 (ProcessStep → Process)

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

app/Http/Requests/V1/Process/StoreProcessRequest.php

@@ -19,6 +19,9 @@ public function rules(): array
             'process_type' => ['required', 'string', 'in:생산,검사,포장,조립'],
             'department' => ['nullable', 'string', 'max:100'],
             'work_log_template' => ['nullable', 'string', 'max:100'],
+            'document_template_id' => ['nullable', 'integer', 'exists:document_templates,id'],
+            'needs_work_log' => ['nullable', 'boolean'],
+            'work_log_template_id' => ['nullable', 'integer', 'exists:document_templates,id'],
             'required_workers' => ['nullable', 'integer', 'min:1'],
             'equipment_info' => ['nullable', 'string', 'max:255'],
             'work_steps' => ['nullable'],
@@ -48,6 +51,9 @@ public function attributes(): array
             'process_type' => '공정구분',
             'department' => '담당부서',
             'work_log_template' => '작업일지 양식',
+            'document_template_id' => '중간검사 양식',
+            'needs_work_log' => '작업일지 여부',
+            'work_log_template_id' => '작업일지 양식 ID',
             'required_workers' => '필요인원',
             'equipment_info' => '설비정보',
             'work_steps' => '작업단계',