fix(catalog): keep the live catalog truthful after every import path

The live catalog store only covered part of the import surface. A durable
job settled, a sync queue drained, a .nitro upload or a clone run left the
Studio rail and the stats bar showing pre-import numbers until the page was
reloaded, and the Catalog Manager kept a second tree that never saw writes
made elsewhere in the session.

Every one of those paths now pulls the tree again, and the refresh carries
the totals with it: importing writes catalog rows server-side, so the counts
the store holds were stale for the rest of the session.

- refreshCatalogTree shares one request between concurrent callers and queues
  a single follow-up read when a write lands mid-flight, so a burst of edits
  costs at most one extra read.
- useFurnitureJobs treats its first payload as a baseline, so a page load no
  longer replays every past import as "just settled", and hands the settled
  jobs to the callback.
- The Catalog Manager pushes its own mutations into the store and re-reads its
  active tab when the store changes.
- The 30s unstable_cache on the admin totals is now tagged and invalidated from
  every catalog write, including the import worker, so it no longer survives an
  import even across a hard reload.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

src/app/api/admin/catalog/tree/route.ts

@@ -1,4 +1,5 @@
 import { asc, count, eq, inArray, like, or } from "drizzle-orm";
+import { loadCatalogTotals } from "@/features/catalog/server/catalog-totals";
 import { catalogFailure } from "@/features/catalog/server/errors";
 import {
 	deletePageCommand,
@@ -348,8 +349,13 @@ export const GET = withAdmin(
 		const isBc = sp.get("catalog") === "bc";
 
 		if (sp.get("mode") === "full") {
-			const pages = isBc ? await getBcTreeFlat() : await getTreeFlat();
-			return apiOk({ pages });
+			// Totals travel with the tree so one refresh updates both the rail and
+			// the stats bar. Read uncached — this response is already the fresh read.
+			const [pages, totals] = await Promise.all([
+				isBc ? getBcTreeFlat() : getTreeFlat(),
+				loadCatalogTotals(isBc ? "bc" : "normal"),
+			]);
+			return apiOk({ pages, totals });
 		}
 
 		const pageIdRaw = sp.get("pageId");