Tests, written before the change, for the check of PIXA_ names at
startup: a PIXA_ variable that is not a setting's variable aborts naming
it, PIXA_PORT aborts with a message saying to use PORT, and
PIXA_CONFIG_PATH and every setting's variable are accepted. Two tests
run New, as the server does at startup: one with a misspelled variable
in the environment, one with it in the config file's env section. They
call validateKnownEnvVars, which the change adds, so the package does
not build until it lands.
Model: opus-5-5
sneak
3bcb2cd6e5