Pin text files to LF in the working tree, not just the repository

.gitattributes carried a bare 'text=auto', which normalizes to LF on
commit but leaves the checkout to follow core.autocrlf. That is set to
true system-wide by a default Git for Windows install, so Git intended
to rewrite every file as CRLF on the next checkout -- the state GitHub
Desktop was reporting.

Adding eol=lf fixes the checkout ending explicitly and takes precedence
over core.autocrlf, so the working tree stays LF on every machine
without asking contributors to change their global Git config. Python
and Blender read LF without complaint on Windows.

Binary formats are marked so Git never inspects or rewrites them.

Author: Danyals-code

.gitattributes

@@ -1,2 +1,22 @@
-# Auto detect text files and perform LF normalization
-* text=auto
+# Store every text file as LF in the repository AND check it out as LF.
+# `eol=lf` is what makes this stick: without it the checkout follows the
+# machine's core.autocrlf, which is `true` on a default Git for Windows
+# install and rewrites these files as CRLF. Python and Blender read LF fine on
+# Windows, so pinning LF keeps the working tree byte-identical on every OS.
+* text=auto eol=lf
+
+# Binaries: never inspected for line endings, never rewritten.
+*.blend binary
+*.blend1 binary
+*.blend2 binary
+*.step binary
+*.stp  binary
+*.STEP binary
+*.STP  binary
+*.obj  binary
+*.png  binary
+*.jpg  binary
+*.jpeg binary
+*.exr  binary
+*.hdr  binary
+*.zip  binary