diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
deleted file mode 100644
index 8cba0caa..00000000
--- a/.claude/scheduled_tasks.lock
+++ /dev/null
@@ -1 +0,0 @@
-{"sessionId":"82cd2c6b-7874-4cfa-9d00-297f91d81b98","pid":2450899,"procStart":"26101142","acquiredAt":1781931933331}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 763da59d..42485a25 100644
--- a/.gitignore
+++ b/.gitignore
@@ -126,3 +126,6 @@ tests/load/storage/
 # `cargo bench --features bench`; drop real photos here (same filenames) to
 # benchmark against real data. (target/ already ignored, covers the JSON dump.)
 benches/corpus/
+
+# Claude Code scheduled-tasks runtime lock — machine-local, never committed.
+.claude/scheduled_tasks.lock