Record the phase 5 ScoreSaber merge and map OST hashes in the sync

ScoreSaber names official levels "ost_<LevelId>" where BeatLeader uses
"<levelid>"; ssMapHash applies that for leaderboard snapshots and maps.
The plan records the merge results and where it differs from the steps.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/archive/cli.ts

@@ -21,7 +21,7 @@ import * as path from 'node:path';
 import { ARCHIVE_DIR, BL_API, DEFAULT_MAPS_SINCE, LEGACY_PLAYER_ID, MAIN_PLAYER_ID, PLAYER_IDS, TOKENS_FILE, USER_AGENT, loadDotEnv, parseSince } from './config.ts';
 import { getAccessToken, login, readTokens, refresh } from './auth.ts';
 import { archivedScores, blHashes, exportLeaderboards, exportProfile, exportReplays, exportScoreStats, exportScores, newestScoreTime } from './beatleader.ts';
-import { archivedSSScores, exportSSPlayer, exportSSReplays, exportSSScores, newestSSScoreTime, ssHashes } from './scoresaber.ts';
+import { archivedSSScores, exportSSPlayer, exportSSReplays, exportSSScores, newestSSScoreTime, ssHashes, ssMapHash } from './scoresaber.ts';
 import { exportMaps } from './beatsaver.ts';
 import { archivePath, exists, listFiles, readState, updateState } from './store.ts';
 
@@ -83,7 +83,7 @@ function playedHashes(since: number): string[] {
 function mapHashes(mapsSince: number): string[] {
 	const legacyWithReplay = archivedSSScores(LEGACY_PLAYER_ID, 0)
 		.filter((it) => exists(archivePath('scoresaber', LEGACY_PLAYER_ID, 'replays', `${it.score.id}.dat`)))
-		.map((it) => it.leaderboard.songHash.toLowerCase());
+		.map(ssMapHash);
 	return [...new Set([...playedHashes(mapsSince), ...legacyWithReplay])].sort();
 }
 
@@ -137,7 +137,7 @@ async function sync(opts: { ratings: boolean; ssReplays: boolean }): Promise<num
 	await exportSSPlayer(MAIN_PLAYER_ID);
 	const ssSince = Math.max(0, newestSSScoreTime(MAIN_PLAYER_ID) - SYNC_OVERLAP_S);
 	const newSS = await exportSSScores(MAIN_PLAYER_ID, ssSince);
-	const newSSHashes = [...new Set(newSS.map((it) => it.leaderboard.songHash.toLowerCase()))].sort();
+	const newSSHashes = [...new Set(newSS.map(ssMapHash))].sort();
 	await exportLeaderboards(newSSHashes.filter((h) => !newBLHashes.includes(h)));
 	if (opts.ssReplays) await exportSSReplays(MAIN_PLAYER_ID, ssSince);
 

scripts/archive/scoresaber.ts

@@ -102,6 +102,14 @@ function seedFromScraper(playerId: string, items: SSItem[]): void {
 	if (copied) console.log(`  copied ${copied} replays from ${dir}`);
 }
 
+/**
+ * The map hash BeatLeader and the archive use for a ScoreSaber item: lowercase, and for official
+ * levels the level id without ScoreSaber's "ost_" prefix (BeatLeader: "beatsaber", SS: "ost_BeatSaber").
+ */
+export function ssMapHash(it: SSItem): string {
+	return it.leaderboard.songHash.toLowerCase().replace(/^ost_/, '');
+}
+
 export function ssHashes(playerId: string, sinceUnix = 0): string[] {
-	return [...new Set(archivedSSScores(playerId, sinceUnix).map((it) => it.leaderboard.songHash.toLowerCase()))].sort();
+	return [...new Set(archivedSSScores(playerId, sinceUnix).map(ssMapHash))].sort();
 }