fix: dont store ap tids in topics:tid

create new zset topicsRemote:tid
upgrade script to copy over ap tids

src/topics/create.js

@@ -57,7 +57,7 @@ module.exports = function (Topics) {
 		await db.setObject(`topic:${topicData.tid}`, topicData);
 
 		const timestampedSortedSetKeys = [
-			'topics:tid',
+			utils.isNumber(tid) ? 'topics:tid' : 'topicsRemote:tid',
 			`cid:${topicData.cid}:tids`,
 			`cid:${topicData.cid}:tids:create`,
 			`cid:${topicData.cid}:uid:${topicData.uid}:tids`,

src/upgrades/4.9.0/topicsRemote_zset.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const db = require('../../database');
+const batch = require('../../batch');
+const utils = require('../../utils');
+
+module.exports = {
+	name: 'Move ap tids from topics:tid to topicsRemote:tid',
+	timestamp: Date.UTC(2026, 1, 24),
+	method: async function () {
+		const { progress } = this;
+		progress.total = await db.sortedSetCard('topics:tid');
+
+		await batch.processSortedSet('topics:tid', async (topicData) => {
+			const apTopics = topicData.filter(topic => !utils.isNumber(topic.value));
+			await db.sortedSetRemove('topics:tid', apTopics.map(topic => topic.value));
+			await db.sortedSetAdd(
+				'topicsRemote:tid',
+				apTopics.map(t => t.score),
+				apTopics.map(t => t.value)
+			);
+			progress.incr(topicData.length);
+		}, {
+			batch: 500,
+			withScores: true,
+		});
+	},
+};