Michael Freno 4652f05dac Add LuaJIT FFI optimizations for memory management ...

- New FFI module with object pooling for Vec2, Rect, Timer structs
- Integrated FFI into LayoutEngine, Performance, and Color modules
- Graceful fallback to standard Lua when LuaJIT unavailable
- Added ffi_comparison_profile.lua for automated benchmarking
- Comprehensive documentation of gains and real bottlenecks

Reality: 5-10% performance improvement (marginal gains)
FFI targets wrong bottleneck - real issue is O(n²) layout algorithm
See PERFORMANCE_ANALYSIS.md for high-impact optimizations (2-3x gains)

2025-12-05 14:35:37 -05:00

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