diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 98c2a22..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.gitignore b/.gitignore
index f98433e..6242e2c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -102,6 +102,9 @@ ewsdr_test_checklist.html
 ewsdr-test-report-*.md
 PROJECT_NOTES_FOR_CLAUDE.md
 
+# macOS filesystem metadata
+.DS_Store
+
 # Application bundle for Mac OS
 *.app/