diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
deleted file mode 100644
index 4e53cb4..0000000
--- a/.claude/scheduled_tasks.lock
+++ /dev/null
@@ -1 +0,0 @@
-{"sessionId":"fc2b3245-b978-4e8f-9dd5-3af100feb30d","pid":792630,"procStart":"19284485","acquiredAt":1781014150559}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 575e95b..8367697 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,6 @@ test-results
 .vscode/*
 !.vscode/extensions.json
 .idea
+
+# Transient harness lock (not part of the project)
+.claude/scheduled_tasks.lock