New EIP: Align Checkpoint with Epoch Boundary Block
(wemeetagain), merged as a Draft, EIP-8333. Checkpoint epochs stay the same and only the root changes, through a new `get_checkpoint_root` helper used in attestation processing, justification, fork choice and the validator guide. Today the target block is proposed in the same slot the first committee votes, so a late block splits their votes, a measurable loss every epoch; the boundary block is known before the epoch starts, so the race disappears.