feat(deploy): wire open-notebook through both deployers, gated on secrets

Registration is load-bearing, not cosmetic: deploy-plan.py refuses any service
it does not know, so SERVICE_ORDER + DANKCLAW_SERVICES are what let `--only` and
`--auto` address the pair at all; the dispatch case in deploy-remote.sh runs it;
the requirement in check_prerequisites gates a manual deploy; and the dispatch
regex in deploy.sh's host-mode branch decides whether a changed path dispatches
a service or falls through to "no service mapped" — an omission there is silent,
which is exactly how the AGENTS.md deployer-registration law was earned.

The deploy seeds /home/dank/Containers/open-notebook/env (0600) from the host
env and refuses to start the pair while OPEN_NOTEBOOK_ENCRYPTION_KEY or
OPEN_NOTEBOOK_PASSWORD is blank: without the key no provider credential saves
and without the password the API — including the episode-audio route — is open
to the LAN with no auth. A seeded file is never rewritten, so re-deploying
cannot clobber a rotated key, which would silently make every stored credential
undecryptable. SURREAL_PASS is derived from SURREAL_PASSWORD in the same write.

The gate names paths that answer, not invented ones: the database is judged by
its own container health status (/surreal is-ready, verified against the pinned
digest) and the app by wait_for_health on /health at the published 5056 mapping —
the route is upstream's and is on the auth middleware's exclude list, so it
stays 200 after the password is set. 180 s covers Next.js build + startup and a
degraded-but-listening first boot, matching the sibling LLM deploys.

Both digest pins are checked against local storage before restart, because
Pull=never means a missing image would otherwise surface as a unit stuck in
"Start request queued" (the 203/EXEC trap's sibling). The interim episode
directory is created before the app starts: a missing bind source makes podman
create it as root-owned and the app's mkdir would then fail.

scripts/deploy.sh

@@ -141,6 +141,7 @@ valid_service() {
         dankclaw:alertmanager|\
         dankclaw:node-exporter|dankclaw:authentik-postgres|dankclaw:authentik-server|\
         dankclaw:authentik-worker|dankclaw:authentik-outpost|dankclaw:authentik-outpost-ldap|dankclaw:anubis|dankclaw:seerr|\
+        dankclaw:open-notebook|\
         dankclaw:frank-dragoon|dankclaw:frank-zealot|\
         dankserver:romm-mariadb|dankserver:romm-redis|dankserver:romm|\
         dankserver:copyparty|dankserver:jellyfin|dankserver:calibre-web|dankserver:calibre-server|dankserver:plex|dankserver:tautulli|\