diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
deleted file mode 100644
index fc7a9725..00000000
--- a/.claude/scheduled_tasks.lock
+++ /dev/null
@@ -1 +0,0 @@
-{"sessionId":"cb60aa6b-b112-4d31-8e53-2ac3e19a3ff7","pid":73847,"procStart":"Fri May 29 16:53:25 2026","acquiredAt":1780208158852}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 3b159cf2..f0509900 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,3 +39,4 @@ mutants.out*/
 # external declared in rivet.yaml. Per-developer working tree, never
 # committed. (Tracked .rivet/ files like agent-context.md stay tracked.)
 .rivet/repos/
+.claude/scheduled_tasks.lock