diff --git a/.gitignore b/.gitignore
index 778cc7b43..1488bf9b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -275,3 +275,8 @@ sgl-kernel/csrc/**/*_musa/
 
 # Git worktrees
 .worktrees/
+
+# Internal benchmarking harness, investigation notes, and local kernels
+# (kept on disk for local work, never committed)
+docs_internal/
+tai-kernel/