The PASSWORD_SALT entry in site.php is only used to salt the user passwords created from the C5 console admin, correct? I mean it has nothing to do with the c5 database user and password set in the site.php file, correct ?
That's correct, the PASSWORD_SALT isn't anything to do with the connection to the mysql database.
I've never had to touch it on a site, it gets generated when a site is installed and that's it. You just have to make sure you don't remove it or overwrite it with something else, and remember to carry it across if you do any migrations.
I've never had to touch it on a site, it gets generated when a site is installed and that's it. You just have to make sure you don't remove it or overwrite it with something else, and remember to carry it across if you do any migrations.