V.E.L.O.C.I.T.Y.-OS JIT Compiler Converts AST to Native Closures

The V.E.L.O.C.I.T.Y.-OS project introduces a Tier-1 Closure-Based JIT compiler that transforms AST into nested Rust closures, eliminating dispatch overhead. This approach resolves opcode matches and control-flow branches at compile-time, reducing branch misprediction penalties. The compiler is part of a 12-part series building a bare-metal OS running entirely in L3 cache.