The question this answers is "what do I have to configure, and where" —
so the table of secrets is the deliverable and the prose is scaffolding
around it.
The organising idea worth keeping: a secret belongs in-container when
nothing outside that container reads it. Every one of authelia's own
secrets passes that test; the client secret's plaintext fails it, which
is what makes delivery a problem at all rather than a detail.
