feat: speed up admin clone import and enable Cache Components

- Clone import: defer FurnitureData.json writes and append all entries in a
  single batched write instead of one read-modify-write per item, removing
  the main serialization bottleneck for large batches.
- Clone import: raise SSE batch concurrency cap from 5 to 10 and bump the
  clone client/route default from 2 to 6.
- Add a flush hook to runSseBatch so callers can batch deferred work before
  batch_complete is emitted, and surface flush errors as an error event.
- Enable Next.js Cache Components (instant: false opt-out) and silence the
  related build warnings in next.config.ts.
- Switch isomorphic-dompurify to dompurify and refresh dependencies.

src/app/admin/logs/audit/page.tsx

@@ -4,6 +4,10 @@ import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
 import { getAuditLogs } from "@/lib/services/audit";
 import { AuditTable } from "./audit-table";
 
+// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
+// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
+export const instant = false;
+
 export default async function AuditLogsPage({
 	params: paramsPromise,
 	searchParams,

src/app/admin/logs/chat/page.tsx

@@ -1,6 +1,10 @@
 import { loadChatLogList } from "../_lib/load-ignored-logs";
 import { ChatTable } from "./chat-table";
 
+// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
+// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
+export const instant = false;
+
 export default async function ChatLogsPage({
 	searchParams,
 }: {

src/app/admin/logs/commands/page.tsx

@@ -1,6 +1,10 @@
 import { loadCommandLogList } from "../_lib/load-ignored-logs";
 import { CommandsTable } from "./commands-table";
 
+// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
+// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
+export const instant = false;
+
 export default async function CommandLogsPage({
 	searchParams,
 }: {

src/app/admin/logs/page.tsx

@@ -19,6 +19,10 @@ import { formatDate } from "@/lib/format-date";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
 import { StaffActivitiesTable } from "./staff-activities-table";
 
+// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
+// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
+export const instant = false;
+
 const SORT_MAP = {
 	when: StaffActivities.createdAt,
 	staff: StaffActivities.userId,

src/app/admin/logs/trades/page.tsx

@@ -1,6 +1,10 @@
 import { loadTradeLogList } from "../_lib/load-ignored-logs";
 import { TradesTable } from "./trades-table";
 
+// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
+// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
+export const instant = false;
+
 export default async function TradeLogsPage({
 	searchParams,
 }: {