Moirai Iterator - Unified high-performance iterator system for concurrent, parallel, and async computing.

This module provides a comprehensive iterator framework that abstracts over different execution contexts:

• Parallel: CPU-bound work across multiple threads with work-stealing
• Async: I/O-bound work with efficient async/await patterns
• Hybrid: Mixed workloads combining parallel and async execution

Design Principles

• Zero-cost abstractions: Compile-time optimizations with no runtime overhead
• Memory efficiency: NUMA-aware allocation and cache-friendly data layouts
• Execution agnostic: Same API works across all execution contexts
• Type safety: Comprehensive compile-time guarantees
• Performance: SIMD vectorization and CPU optimization
• Async compatibility: Native async/await support throughout