diff --git a/.gitignore b/.gitignore
index 946330a..26b6410 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,4 +15,8 @@
 
 # Tempfiles created by git-spell-check
 docs-dictionary-*
-temp_file-*
\ No newline at end of file
+temp_file-*
+
+# Local AI working files live here. Keep ignored on non-ai branches.
+.ai/
+AGENTS.md