Remove the local copy of jay_diff and its tests/data; switch all four import sites to `jaydiff.diff.diff_full` / `jaydiff.merge.merge_full` from the shared Gitea package (http://192.168.22.90:3001/jayfield/jaypy). Add the package as a VCS dependency in requirements.txt. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>