Two arms with different jobs. `usersFile` is configured through its old
path, so dropping the rename entry fails the eval. `hostClientSecretDir`
cannot be configured at all — it is read-only and derived — so its arm
asserts that a consumer renders the derived path, which is what breaks
if a reader is left pointing at the namespace the option moved out of.
Seven of those reads went through an `autheliaCfg` alias rather than a
full path, where a path-shaped grep does not see them. That, not the
rename, was the failure this change could have shipped.
The two read-only options get no rename entry. A rename module
contributes a definition to its target and a read-only option refuses a
second one, so a shim for either makes every evaluation fail with "set
multiple times", naming the option's own declaration as the rival. Of
the 38 distinct leaves the rename table already targets, these are the
only two declared read-only.