JIT Compiler Module for Shape

Compiles Shape bytecode to native x86-64/ARM machine code using Cranelift for high-performance strategy execution in backtesting.

Module Structure

• nan_boxing - NaN-boxing constants and helper functions for type tagging
• context - JITContext, JITDataFrame, and related structures
• ffi - FFI functions called from JIT-compiled code
• translator - BytecodeToIR bytecode-to-IR translation
• compiler - JITCompiler implementation (split into logical modules)
• core - Legacy re-exports and tests