Existing preHook only dumped matrix-synapse; the per-bridge postgres
DBs (mautrix-{whatsapp,signal,telegram,discord}) and heisenbridge's
sqlite state weren't covered. Losing them = relogin everywhere and
orphaned portal rooms.

Used via nixpkgs.overlays so per-module insecure-package permits compose
cleanly — nixpkgs.config.permittedInsecurePackages merges via
recursiveUpdate, so list values from multiple modules clobber each other.
Switch jitsi over as the first consumer.

Move realwallpaper service and lassul.us website from prism to neoprism.
DNS for lassul.us already points at neoprism.

bgt-bot is commented out on neoprism for now; can be enabled later if it
goes down on prism (which currently isn't deploying anyway).

Drop the now-redundant lassul.us -> orange.r proxy in orange-host.nix and
the lassul.us acme fallback on prism.