chore: 프로젝트 설정 및 문서 파일 추가

- .agent/, .claude/, .vscode/ 설정 파일
- design/ 디자인 리소스
- reports/, research/ 분석 문서
- testcase/ 테스트 케이스 문서
- db_sync_chandj.bat, sam.code-workspace

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

research/flow-chart/node_modules/playwright/cli.js

@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const { program } = require('./lib/program');
+program.parse(process.argv);