feat: add automatic catalog organization for all imported furniture

Add a fully automatic "Organize all" action in the Studio that organizes
the entire database into catalog pages:

- Create a dedicated sub-page per furniture line (e.g. weebz, habbox) from
  FurnitureData.json, falling back to the auto-detected category.
- Add missing purchasable items to the catalog on their line/category page.
- Re-home and re-price existing catalog entries onto their correct page.
- Pages are created automatically when missing; no manual selection needed.

Includes the organizeCatalogAll service, a POST /api/admin/import/furni/organize
endpoint, and the Studio button.

src/app/api/admin/import/furni/organize/route.ts

@@ -0,0 +1,42 @@
+import { withAdmin } from "@/lib/api-handler";
+import { apiError, apiOk } from "@/lib/api-response";
+import { PERMS } from "@/lib/permissions";
+import { logAudit } from "@/lib/services/audit";
+import { organizeCatalogAll } from "@/lib/services/catalog-repair";
+import { rcon } from "@/lib/services/rcon";
+
+// ── Fully automatic catalog organization of the whole database ──────
+export const POST = withAdmin(
+	{ permission: PERMS.ASSETS_IMPORT },
+	async (_request, ctx) => {
+		try {
+			const result = await organizeCatalogAll();
+
+			// Refresh game server caches so the reorganized catalog shows up.
+			try {
+				await rcon.updateCatalog();
+			} catch (err) {
+				console.warn(
+					"[organize-furni] RCON catalog refresh failed:",
+					(err as Error).message,
+				);
+			}
+
+			logAudit({
+				userId: ctx.session.user.id,
+				action: "furni_organize",
+				target: "CatalogItems",
+				targetId: 0,
+				after: {
+					pagesCreated: result.pagesCreated,
+					catalogAdded: result.catalogAdded,
+					catalogRehomed: result.catalogRehomed,
+				},
+			});
+
+			return apiOk({ ...result });
+		} catch (err) {
+			return apiError((err as Error).message, 500);
+		}
+	},
+);