diff --git a/.gitignore b/.gitignore
index 81f760a..0cf0884 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@
 /build
 crates/ail/tests/snapshots/*.actual
 crates/ail/tests/snapshots/*.ll.actual
+# Claude Code harness runtime state (the skill/agent symlinks under
+# .claude/ ARE tracked; only transient runtime artefacts are ignored).
+.claude/scheduled_tasks.lock