feat(admin): server-safe StatusCard and Import hub polish

Split OnlineUsersWidget from StatusCard, decouple ad delete button, sync badge import to ExternalTexts+WebsiteBadges, add Import section hub with cancelable SSE jobs and upload SQL option.

Co-authored-by: Cursor <[email protected]>

src/app/admin/bans/page.tsx

@@ -1,5 +1,5 @@
 import { desc, eq, gt, or } from "drizzle-orm";
-import { Ban } from "lucide-react";
+import { Ban as BanIcon } from "lucide-react";
 import { redirect } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import { createBan, liftBan } from "@/actions/admin-bans";
@@ -7,7 +7,7 @@ import { AdminPageShell } from "@/components/admin/admin-page-shell";
 import { StatusCard } from "@/components/admin/dashboard";
 import { Button } from "@/components/ui/button";
 import { unixNow } from "@/lib/bans";
-import { Ban as BanTable, db } from "@/lib/db";
+import { Ban, db } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 import { canAccess, getAdminContext, PERMS } from "@/lib/permissions";
 
@@ -19,13 +19,13 @@ export default async function AdminBans() {
 
 	const t = await getTranslations("pages.admin.bans");
 	const now = unixNow();
-	let bans: (typeof BanTable.$inferSelect)[] = [];
+	let bans: (typeof Ban.$inferSelect)[] = [];
 	try {
 		bans = await db
 			.select()
-			.from(BanTable)
-			.where(or(eq(BanTable.banExpire, 0), gt(BanTable.banExpire, now)))
-			.orderBy(desc(BanTable.timestamp))
+			.from(Ban)
+			.where(or(eq(Ban.banExpire, 0), gt(Ban.banExpire, now)))
+			.orderBy(desc(Ban.timestamp))
 			.limit(100);
 	} catch {
 		bans = [];
@@ -35,7 +35,7 @@ export default async function AdminBans() {
 	const accountBans = bans.filter((b) => b.type === "account").length;
 
 	return (
-		<AdminPageShell icon={Ban} title={t("title")} subtitle={t("subtitle")}>
+		<AdminPageShell icon={BanIcon} title={t("title")} subtitle={t("subtitle")}>
 			<main>
 				<div className="grid grid-cols-[repeat(auto-fit,minmax(180px,1fr))] gap-3.5 mb-6">
 					<StatusCard