Sam Altman onstage during Tools for Humanity’s World event in April.Sam Altman has tapped Mikhail Shapiro, an award-winning biomolecular engineer, to join the Merge Labs brain-computer interface startup he’s set to announce soon with co-founder Alex Blania.While Shapiro’s official title is unclear, sources say he will be part of Merge’s founding team and has been positioned as a key leader in talks with investors. Those talks are ongoing, but Merge expects to raise hundreds of millions of dollar...