Major enhancements to LLVM code generation and type handling:
1. String Operations:
- Added StringBox length fast-path (length/len methods)
- Converts i8* to handle when needed for len_h call
- Consistent handle-based string operations
2. Array/Map Fast-paths:
- ArrayBox: get/set/push/length operations
- MapBox: get/set/has/size with handle-based keys
- Optimized paths for common collection operations
3. Field Access:
- getField/setField implementation with handle conversion
- Proper i64 handle to pointer conversions
4. NewBox Improvements:
- StringBox/IntegerBox pass-through optimizations
- Fallback to env.box.new when type_id unavailable
- Support for dynamic box creation
5. Documentation:
- Added ARCHITECTURE.md for overall design
- Added EXTERNCALL.md for external call specs
- Added LOWERING_LLVM.md for LLVM lowering rules
- Added PLUGIN_ABI.md for plugin interface
6. Type System:
- Added UserBox type registration in nyash_box.toml
- Consistent handle (i64) representation across system
Results: More robust LLVM code generation with proper type handling
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
