diff --git a/.gitignore b/.gitignore
index a0493561..a5e476e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,3 +53,6 @@ derby.log
 # python coverage data
 .coverage
 python/.coverage
+
+# Isaac / code-sync local tooling state (must not be committed)
+.isaac/
diff --git a/.isaac/config.json b/.isaac/config.json
deleted file mode 100644
index 93cf0a63..00000000
--- a/.isaac/config.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "sync_reminder_last_shown": "2026-08-25"
-}
\ No newline at end of file