Merge pull request #1060 from deepseek-harness/docs/paper

docs: add cordis paper

.gitattributes

@@ -5,3 +5,5 @@
 # for cmd.exe), add a `*.bat text eol=crlf` override AFTER this line — the
 # in-repo form stays LF; CRLF becomes checkout-time presentation only.
 * text=auto eol=lf
+
+*.pdf -text