nix: run the review classifier in a container of its own when a host enables it

deploy.review-classifier.enable (off by default, not derived from
allSwarmServices) puts swarm-review-classifier in its own network
namespace on the bridge, with claude-code and the daemon. A host unit
copies the classifier's store leaf into the container; the daemon reads
its queue client secret and the API key from the store with it.

- glue-bao-tls mints the review-classifier leaf; swarm-bao writes the
  swarm-review-classifier role, reading exactly the API key path and the
  classifier's queue client secret; swarm.nix reserves its CN.
- glue-review-classifier-oidc-client registers the machine client where
  authelia runs, and the publisher carries its secret to the store.
- swarm-nats passes the client id to the responder as
  --review-classifier-client.
- Where the host runs a hive-tier collector, claude exports its metrics
  there; the daemon adds the repo and the PR to the resource attributes.
- module-eval: the new grant and leaf (bao-grants, now sixteen granting
  units), the container's presence and its unit (core-toggle), and the
  client registration and publishing (secret-publisher).

nix/packages/default.nix

@@ -170,6 +170,10 @@ in
   # which is the arrangement it exists to end.
   swarm-matrix-ctl = mkBinPackage "swarm-matrix-ctl" "hyperhive matrix container control binary";
 
+  # The review classifier's daemon. Out of `daemonBins` for the responder's
+  # reason: it runs inside its own container, not on the host.
+  swarm-review-classifier = mkBinPackage "swarm-review-classifier" "hyperhive review classifier try-out daemon";
+
   # The only process allowed to write swarm-authelia's users database —
   # same "runs *inside* a container, not on the host" placement as
   # `swarm-nats-auth` above (this one lives in `swarm-authelia`'s