diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
deleted file mode 100644
index 2929fd1a..00000000
--- a/.claude/scheduled_tasks.lock
+++ /dev/null
@@ -1 +0,0 @@
-{"sessionId":"6a00de6e-282e-4cd8-98ec-b5afb73c468d","pid":50072,"acquiredAt":1775678989779}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index bf408642..4427d501 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,7 +34,11 @@ src/ui/viewer.html
 .claude-octopus/
 .claude/session-intent.md
 .claude/session-plan.md
+.claude/scheduled_tasks.lock
 .octo/
 
+# Installer marker — dropped by the claude-mem CLI at install time
+plugin/.cli-installed
+
 # Local contribution analysis (not part of upstream)
-CONTRIB_NOTES.md
\ No newline at end of file
+CONTRIB_NOTES.md