Verdict4sEnv

Reading configuration from the environment. JVM only.

A separate object rather than methods on Verdict4s, and not by preference: a Scala object cannot be split across src/ and src-jvm/, so adding these there would force default to be duplicated into both platform directories — exactly the drift that keeping one signature on both platforms is meant to prevent.

Scala.js has no environment to read, so this simply does not exist there. The JVM artifact having a slightly larger surface than the JS one is normal and does not affect Verdict4s.default.

Variable names match the official SDKs, so a project can share them.