diff --git a/.Rbuildignore b/.Rbuildignore
index 18a52003..64a22be8 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -30,3 +30,5 @@ GEMINI\.md
 # flint files
 ^flint$
 ^[.]?air[.]toml$
+^\.positai$
+^\.claude$
diff --git a/.gitattributes b/.gitattributes
index dfe07704..39357fe2 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,5 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+
+# Force LF for R files (required by air formatter)
+*.R text eol=lf
diff --git a/.gitignore b/.gitignore
index 1913cee4..6ab735b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,5 @@ revdep/
 docs
 *.tar.gz
 report.Rcheck
+.positai
+.claude