Restore clean chart endpoint labels

Separate B4 label from chart endpoint score

Label chart endpoint as B4 score

Correct leaderboard task and evidence metadata

Update leaderboard with Aug 3 reviewed results

Refine leaderboard publication copy

Serve prebuilt static leaderboard without cloud build

Clarify one-round and partial result labels

Replace preview scores with reviewed 61-task results

Publish ASI-Bench leaderboard preview

initial commit