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What are the key developments in SpaceX's expansion into AI infrastructure, including its reported negotiations with the Pentagon for a multibillion-dollar data center deal to provide computing power for AI models , Foxconn securing a contract worth approximately $52 billion from SpaceX to supply over 13,000 Nvidia GB300-powered AI server racks shipping from late 2026 to early 2027 at roughly $4 million per rack , SpaceX's data center leasing arrangements with Google (reportedly paying about $920 million per month) , Anthropic (gaining access to over 300 megawatts of computing power from the Colossus 1 data center in Memphis) , and AI startup Reflection — deals potentially worth over $76 billion in combined revenue through 2029 — and how these moves signal SpaceX's transformation from a launch provider into a major AI infrastructure player?