UR-Nexus 1.65.0

• The release gate now asks the registry whether the packed dependency ranges
  can actually be installed. This is the check that was missing when 1.61.2
  through 1.64.0 shipped uninstallable: the tarball built, the CLI started,
  every test passed and the gate was green, because all of it ran against the
  working tree and none of it asked npm whether playwright-core@^1.64.0
  exists. The failure only ever appeared on a user's machine.
• A dependency range equal to the UR version is rejected outright, resolvable
  or not. That equality is the fingerprint of a version bump that matched too
  much, which is exactly how the break happened.
• Verified by reintroducing the historical break: exit 1 with
  playwright-core@^1.64.0 does not resolve: npm error code E404, and exit 0
  on a clean tree.