Miniflux was decommissioned (#127) but lingered in docs and, more
importantly, in the status-page service map — which was probing a dead
port (london-b:8181) and reporting Miniflux as permanently down. Drop it
from update-status.sh and from every doc that still listed it.
Also:
- Annotate Nextcloud AIO as manually managed via its AIO mastercontainer
(it's never been in this repo — clarifies why there's no service dir).
- Add the apps.pez.sh dashboard row to services.md so it's no longer
referenced in the Auth Summary without a table entry.
- Make the secrets.md .enc.env examples generic placeholders instead of
pointing at a service path that doesn't exist.
