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-plan.py

@@ -26,6 +26,7 @@ SERVICE_ORDER = (
     "marreta",
     "pihole",
     "open-webui",
+    "open-notebook",
     "gitea-postgres",
     "gitea-server",
     "comfyui",
@@ -74,6 +75,7 @@ DANKCLAW_SERVICES = {
     "marreta",
     "pihole",
     "open-webui",
+    "open-notebook",
     "gitea-postgres",
     "gitea-server",
     "comfyui",
@@ -316,6 +318,14 @@ def services_for_path(path: str, target: str) -> set[str]:
         if len(parts) >= 2 and parts[1] == "open-webui":
             _add(services, "open-webui")
             return services
+        if len(parts) >= 2 and parts[1] == "open-notebook":
+            # One deployable owns the app AND its SurrealDB, like the marreta
+            # app/companion pair: the app alone cannot write a note and the
+            # database alone is a volume nothing reads. Any change under the
+            # directory (unit, network, or the interim episode mount) therefore
+            # plans the pair, which deploy_open_notebook starts database-first.
+            _add(services, "open-notebook")
+            return services
         # frank-dragoon left the quadlet shape on 2026-09-19 (CIRU v4.4.1 host
         # build, root unit): its files live in scripts/ and map there.
         if len(parts) >= 2 and parts[1] == "observability":
@@ -426,6 +436,12 @@ def services_for_path(path: str, target: str) -> set[str]:
             # serving Qwen3.8-Flash-Next Q8_0. The download script fetches
             # the payload, which is host-side state, so it selects nothing.
             _add(services, "frank-archon")
+        if name == "open-notebook.env":
+            # open-notebook's tunables live here — the only repo-tracked part of
+            # either container's environment (the credentials are seeded on the
+            # host, so they are never a deploy trigger). Changing it is a
+            # restart of the pair, which the single deployable performs.
+            _add(services, "open-notebook")
         # Deployment/test/benchmark scripts and other repo tooling do not
         # restart a runtime service.
         return services