refactor(housekeeping): split client, add loading states, URL persistence, fix dead code

- Split ManageClient into ManageSection, PresetsSection, TestSection,
  ImportSection, ExportSection - each tab only renders what it needs
- Add loading/disabled states to preset, import, export, clear buttons
- Persist search and group filter via URL searchParams (survives refresh)
- Remove dead getAuditHistory export from actions
- Fix testRankPermission - remove unnecessary revalidatePath with JSON result
- Clean up unused errors/count variables in bulkImportPermissions
- Add 'loading' translation key to housekeeping section (en/nl)

src/app/admin/housekeeping/page.tsx

@@ -3,35 +3,21 @@ import { redirect } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
 import { prisma } from "@/lib/prisma";
-import { ManageClient } from "./client";
+import {
+	ExportSection,
+	ImportSection,
+	ManageSection,
+	PresetsSection,
+	TestSection,
+} from "./client";
 
 export const dynamic = "force-dynamic";
 
 const GROUPS = [
-	"Core",
-	"Users",
-	"Rooms",
-	"Bans",
-	"News",
-	"Logs",
-	"Settings",
-	"Wordfilter",
-	"Catalog",
-	"Shop",
-	"Events",
-	"Tickets",
-	"Moderation",
-	"Polls",
-	"Analytics",
-	"DevOps",
-	"Prefixes",
-	"Banners",
-	"Radio",
-	"RCON",
-	"Assets",
-	"Export",
-	"Notifications",
-	"CMS Pages",
+	"Core", "Users", "Rooms", "Bans", "News", "Logs", "Settings",
+	"Wordfilter", "Catalog", "Shop", "Events", "Tickets", "Moderation",
+	"Polls", "Analytics", "DevOps", "Prefixes", "Banners", "Radio",
+	"RCON", "Assets", "Export", "Notifications", "CMS Pages",
 ];
 
 export default async function AdminHousekeeping({
@@ -241,7 +227,7 @@ export default async function AdminHousekeeping({
 			)}
 
 			{tab === "manage" && (
-				<ManageClient
+				<ManageSection
 					permissions={allPermissions}
 					groups={allGroups}
 					groupCounts={groupCounts}
@@ -250,31 +236,17 @@ export default async function AdminHousekeeping({
 			)}
 
 			{tab === "import" && (
-				<ManageClient
-					permissions={allPermissions}
-					groups={allGroups}
-					groupCounts={groupCounts}
-					permSet={permSet}
-				/>
+				<>
+					<ImportSection />
+					<div className="mt-8">
+						<ExportSection />
+					</div>
+				</>
 			)}
 
-			{tab === "presets" && (
-				<ManageClient
-					permissions={allPermissions}
-					groups={allGroups}
-					groupCounts={groupCounts}
-					permSet={permSet}
-				/>
-			)}
+			{tab === "presets" && <PresetsSection />}
 
-			{tab === "test" && (
-				<ManageClient
-					permissions={allPermissions}
-					groups={allGroups}
-					groupCounts={groupCounts}
-					permSet={permSet}
-				/>
-			)}
+			{tab === "test" && <TestSection permissions={allPermissions} />}
 
 			{tab === "ranks" && (
 				<section>