⛰️ Features
- store and collect commit coverage, Git history and test-selection data (#13561)
🐛 Bug Fixes
- backport local package registry override fix to 4.212 (#14074)
- keep code coverage when Xcode 27 cache prefix mapping is on (#13826)
- preserve Swift warning group flags (#13812)
- restore cached targets whose outputs include an empty file (#13782)
- stop signature verification from slowing local-hit generates (#13772)
- accept once on project creation and hide it from shipped clients (#13762)
- accept project build systems clients don't know yet (#13760)
- resolve REAPI module cache stalls on 4.211 cold generate (#13753)
- drop redundant -swift-version flag from swiftLanguageMode mapping (#13755)
- resolve /^root snapshot paths against the checkout (#13737)
- keep schemes with hand-written test plans on their emptied project so selective testing runs them (#13702)
- make byte formatting thread-safe on Linux (#13696)
- name the REAPI call a module cache upload failed on (#13672)
- bundle dSYMs into cached XCFrameworks warmed for release (#13638)