diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..d33444e
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,11 @@
+# Normalize all text to LF in the repository.
+# Working copies may use CRLF on Windows; git stores and diffs LF so that
+# editor/tool line-ending flips never appear as content changes.
+* text=auto eol=lf
+
+# Explicit binaries: never normalize.
+*.xlsx binary
+*.png  binary
+*.pdf  binary
+*.docx binary
+*.zip  binary
diff --git a/.gitignore b/.gitignore
index ccc6913..e800c94 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,9 @@ Thumbs.db
 *.pth
 *.pt
 *.onnx
+
+# Session scratch
+/tmp/
+
+# Windows junction git sees as a symlink, so **/node_modules/ misses it
+/research/experiments/node_modules