feat: 1차 과제 프로젝트 코드 업로드

git-log.txt

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+Git 커밋 기록
+작성 시간: 2026-10-23 09:29:16+09:00
+
+commit 9cee9bf79126f9d87220dd45d6a6038611d750a7 (HEAD -> master)
+Author: lek <eglee@samaneng.com>
+Date:   Thu Oct 22 11:28:16 2026
+
+    Validate DXF geometry and splines and improve viewer maintenance
+
+commit 11fd3badf6f6e46d20f010ffa151c46fe87dc7ad
+Author: lek <eglee@samaneng.com>
+Date:   Tue Oct 20 21:23:57 2026
+
+    Build DXF-based R2C 3D viewer and local web server
+
+commit 277c7005aba2c7b8fb15ca3268516c1a687765bc
+Author: lek <eglee@samaneng.com>
+Date:   Tue Oct 20 20:45:56 2026
+
+    Add R2C drawing 3D viewer
+
+commit b59196feb3bf98764f118b13c52fdf3a3f2fadff
+Author: lek <eglee@samaneng.com>
+Date:   Tue Oct 20 12:06:14 2026
+
+    Start 3D practice