Apple rejects unsigned native code inside cached wheel ZIPs. The macOS
signer can reach the extracted copies, but not the copies inside ZIPs.
Keep the extracted cache and omit compressed wheels from its sdist bucket.
The build machine retains its original cache. uv installs from the extracted
entries, so offline environment rebuilds do not need the compressed copies.
The native regression builds a real source package with uv. Its offline
install succeeds after the server stops and the source files are deleted.
Focused tests report 11 passed and 3 platform skips. A real pilk native
extension also installs and imports from the pruned cache. Apple acceptance
remains pending on the next release run.
d6999fa8b8