WASHINGTON — Rocket Lab says it has signed the first customer for its Neutron launch vehicle as the company pushes towards a mid-2025 first launch of the vehicle. The company announced Nov. 12 that it signed a contract with an undisclosed “commercial satellite constellation operator” for two launches of Neutron, one in mid-2026 and the other in 2027, a deal that could lead to additional launches for the same customer. “We see this agreement as an important opportunity that signifies the beginning of a productive collaboration that could see Neutron…