diff --git a/.gitignore b/.gitignore
index becae1c..ea65d67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,5 +28,8 @@ desktop.ini
 *~
 tests/agents/validation-report.md
 
+# Coding-agent session transcripts accidentally dropped at repo root
+omp-session-*.html
+
 # Submodule dependencies
 tools/aseprite-mcp/.venv/