diff --git a/.gitignore b/.gitignore
index 554bb1b2..19cfdcf1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -107,6 +107,16 @@ ENV/
 # all files under
 .git/
 
+# any commit-msg gen tmp files
+.claude/*_commit_*.md
+.claude/*_commit_*.toml
+
+# nix develop --profile .nixdev
+.nixdev*
+
+# :Obsession .
+Session.vim
+
 # macOS Finder metadata
 **/.DS_Store