diff --git a/.gitignore b/.gitignore
index 1a7a8d7..1be4d47 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,6 +44,9 @@
 /android/app/profile
 /android/app/release
 
+# ローカル専用の参考素材（Claude への状況説明用サンプル画像など．Git には含めない）
+local_reference/
+
 # Claude Code
 .claude/plans/
 
diff --git a/DSC_0066.JPG b/DSC_0066.JPG
deleted file mode 100644
index d8a9c19..0000000
--- a/DSC_0066.JPG
+++ /dev/null
Binary files differ