diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..4dc0456
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,6 @@
+# Bash scripts must stay LF — CRLF breaks the shebang on Linux/macOS/WSL.
+bash/** text eol=lf
+
+# PowerShell/cmd are happiest with CRLF on Windows.
+*.ps1 text eol=crlf
+*.cmd text eol=crlf