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/import/audit/audit-client.tsx

@@ -190,6 +190,8 @@ export function AuditClient() {
 		} catch (err) {
 			if ((err as Error).name !== "AbortError") {
 				toast.error("Audit request failed");
+			} else {
+				toast.info("Audit cancelled");
 			}
 		} finally {
 			setLoading(false);
@@ -203,14 +205,25 @@ export function AuditClient() {
 	return (
 		<div className="space-y-6">
 			{!summary && (
-				<Button onClick={runAudit} disabled={loading} size="lg">
-					{loading ? (
-						<Loader2 className="w-4 h-4 animate-spin mr-2" />
-					) : (
-						<ClipboardList className="w-4 h-4 mr-2" />
+				<div className="flex items-center gap-2 flex-wrap">
+					<Button onClick={runAudit} disabled={loading} size="lg">
+						{loading ? (
+							<Loader2 className="w-4 h-4 animate-spin mr-2" />
+						) : (
+							<ClipboardList className="w-4 h-4 mr-2" />
+						)}
+						{loading ? progress || "Running…" : "Run Full Catalog Audit"}
+					</Button>
+					{loading && (
+						<Button
+							variant="outline"
+							size="lg"
+							onClick={() => abortRef.current?.abort()}
+						>
+							Cancel
+						</Button>
 					)}
-					{loading ? progress || "Running…" : "Run Full Catalog Audit"}
-				</Button>
+				</div>
 			)}
 
 			{loading && checkProgress && (