fix: preserve LF in offline deployment assets

.gitattributes

@@ -0,0 +1,10 @@
+# Linux offline deployment assets must stay executable after checkout or
+# `git archive` on Windows build workstations.
+deploy/linux-docker-offline-deerflow-only/** text eol=lf
+deploy/linux-docker-offline/Dockerfile.backend text eol=lf
+deploy/linux-docker-offline/Dockerfile.frontend text eol=lf
+deploy/linux-docker-offline/sanitize_release_sources.py text eol=lf
+docs/DeerFlow纯离线标准发版与部署.md text eol=lf
+
+# Wheel files are immutable binary deployment inputs.
+offline-backend-20260512/wheelhouse/*.whl binary