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>

database/migrations/2026_02_10_100001_add_work_log_fields_to_process_steps.php

@@ -0,0 +1,47 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * 검사양식/작업일지 설정을 ProcessStep → Process 레벨로 이동
+ * - processes: document_template_id, needs_work_log, work_log_template_id 추가
+ * - process_steps: document_template_id 제거
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        // 1. Process에 검사양식/작업일지 필드 추가
+        Schema::table('processes', function (Blueprint $table) {
+            $table->foreignId('document_template_id')->nullable()->after('work_log_template')
+                ->constrained('document_templates')->nullOnDelete()->comment('중간검사 양식 ID');
+            $table->boolean('needs_work_log')->default(false)->after('document_template_id')->comment('작업일지 여부');
+            $table->foreignId('work_log_template_id')->nullable()->after('needs_work_log')
+                ->constrained('document_templates')->nullOnDelete()->comment('작업일지 양식 ID');
+        });
+
+        // 2. ProcessStep에서 document_template_id 제거
+        Schema::table('process_steps', function (Blueprint $table) {
+            $table->dropForeign(['document_template_id']);
+            $table->dropColumn('document_template_id');
+        });
+    }
+
+    public function down(): void
+    {
+        // ProcessStep에 document_template_id 복원
+        Schema::table('process_steps', function (Blueprint $table) {
+            $table->foreignId('document_template_id')->nullable()->after('needs_inspection')
+                ->constrained('document_templates')->nullOnDelete();
+        });
+
+        // Process에서 필드 제거
+        Schema::table('processes', function (Blueprint $table) {
+            $table->dropForeign(['work_log_template_id']);
+            $table->dropForeign(['document_template_id']);
+            $table->dropColumn(['work_log_template_id', 'needs_work_log', 'document_template_id']);
+        });
+    }
+};