dd6f1308c1
- mirror_refs.sh: additive branch+tag mirroring between dadeschools (HTTPS) and prgs (SSH:2222). Dry-run default, --apply to execute, --force for diverged branches. Uses bare repo cache for isolation. - test_mirror_refs.py: flag parsing, safety defaults, brace-delimited refspec validation, and local bare-repo integration tests (FF detection, branch/tag comparison). - README.md: document mirror_refs.sh, test suite, and multi-instance auth.