Convert four more hal modules: bookshelf, unifi, fail2ban, marrytts

- bookshelf: Servarr v1 fork on the radarr template (4 tools).
- unifi: portainer-shaped tooled app (7 tools, 9 ports), settings-merged config.
- fail2ban: host-level security module mirroring firewall (service + restart-on,
  no container); ban actions preserved as source ufw/iptables and FLAGGED to be
  rewritten nftables-native before it actually bans.
- marrytts: manifest-only plain container (no tools), like resolv-conf.

All typecheck against the built @novox/mesh-sdk; service images digest-pinned.
Held from merge pending the hq initialization reconciliation.

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF

modules/bookshelf/index.ts

@@ -0,0 +1,60 @@
+// bookshelf's events. The tool runtime imports this once the broker is bound. It watches the
+// download queue and turns its comings and goings into mesh events — the same mechanism radarr uses,
+// applied to a Servarr book manager.
+//
+// Emits (novox/hq ADR 0046/0047):
+//   module.bookshelf.book.grabbed        — a release entered the queue (Bookshelf grabbed it)
+//   module.bookshelf.download.completed  — a release left the queue, imported. This routing key is
+//                                          what the plex module consumes (module.*.download.completed)
+//                                          to rescan, so a new audiobook becomes a visible item.
+// Consumes: none.
+//
+// NOTE: the hal bookshelf module emitted no events (its hooks only did install-time provisioning).
+// This queue watcher is new in nox, modelled exactly on radarr's — bookshelf is a Servarr app with
+// the same queue semantics, so the diff-and-emit pattern carries over unchanged.
+//
+// The queue is polled and diffed, primed silently on the first look (like plex's index.ts) so a
+// restart mid-download does not re-announce everything already in flight as freshly grabbed.
+
+import { emit } from "@novox/mesh-sdk/events";
+import { BookshelfClient, type BookshelfQueueItem } from "./client.js";
+
+const bookshelf = BookshelfClient.fromEnv();
+
+// Bookshelf removes an item from the queue once it has been imported; a "warning"/"failed" status is
+// how a stuck or broken grab shows itself, so we do not call those a completion when they vanish.
+const FAILED_STATUSES = new Set(["failed", "warning"]);
+
+const inQueue = new Map<number, BookshelfQueueItem>();
+let primed = false;
+
+async function pollQueue(): Promise<void> {
+  const { items } = await bookshelf.getQueue();
+  const now = new Map(items.map((i) => [i.id, i]));
+
+  if (primed) {
+    // Entered the queue since last look — Bookshelf grabbed a release.
+    for (const [id, item] of now) {
+      if (!inQueue.has(id)) await emit("module.bookshelf.book.grabbed", { title: item.title, status: item.status });
+    }
+    // Left the queue — imported and done, unless it was last seen failing.
+    for (const [id, item] of inQueue) {
+      if (!now.has(id) && !FAILED_STATUSES.has(item.status)) {
+        await emit("module.bookshelf.download.completed", { title: item.title });
+      }
+    }
+  }
+
+  inQueue.clear();
+  for (const [id, item] of now) inQueue.set(id, item);
+  primed = true;
+}
+
+const tick = (fn: () => Promise<void>, everyMs: number): void => {
+  const run = (): void => void fn().catch((err) => console.error(`[bookshelf] ${err}`));
+  setInterval(run, everyMs);
+  run();
+};
+tick(pollQueue, 30_000);
+
+console.log("[bookshelf] watching the download queue, emitting grabs and completions");