fix(hk): protect unsaved editors and await prefix save results

src/app/admin/prefixes/prefixes-client.tsx

@@ -107,44 +107,34 @@ export function PrefixesClient({ canEdit }: { canEdit: boolean }) {
 		});
 	};
 
-	const handleSavePrefix = async (data: PrefixFormData, editId?: number) => {
-		if (editId) {
+	const handleSavePrefix = (
+		data: PrefixFormData,
+		editId?: number,
+	): Promise<boolean> => {
+		if (isPending) return Promise.resolve(false);
+		return new Promise((resolve) => {
+			const fields = {
+				text: data.text,
+				color: data.color,
+				icon: data.icon,
+				effect: data.effect,
+				active: data.active ? 1 : 0,
+			};
 			run(
 				() =>
-					updatePrefix({
-						id: editId,
-						text: data.text,
-						color: data.color,
-						icon: data.icon,
-						effect: data.effect,
-						active: data.active ? 1 : 0,
-					}),
+					editId
+						? updatePrefix({ id: editId, ...fields })
+						: createPrefix({ username: data.username, ...fields }),
 				{
-					successMessage: "Prefix updated!",
+					successMessage: editId ? "Prefix updated!" : "Prefix created!",
 					onSuccess: () => {
-						fetchPrefixes();
+						void fetchPrefixes();
+						resolve(true);
 					},
+					onError: () => resolve(false),
 				},
 			);
-		} else {
-			run(
-				() =>
-					createPrefix({
-						username: data.username,
-						text: data.text,
-						color: data.color,
-						icon: data.icon,
-						effect: data.effect,
-						active: data.active ? 1 : 0,
-					}),
-				{
-					successMessage: "Prefix created!",
-					onSuccess: () => {
-						fetchPrefixes();
-					},
-				},
-			);
-		}
+		});
 	};
 
 	const openAddDialog = () => {