RunMat Snapshot Creator

High-performance snapshot system for preloading the RunMat standard library. Inspired by V8's snapshot architecture, this provides:

• Zero-copy serialization with memory mapping
• Multi-tier compression with LZ4 and ZSTD
• Integrity validation with SHA-256 checksums
• Concurrent loading with lock-free data structures
• Progressive enhancement with fallback mechanisms

Architecture

┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│  Standard Lib   │ -> │   Snapshot       │ -> │   Runtime       │
│  Components     │    │   Generator      │    │   Loader        │
│                 │    │                  │    │                 │
│ • Builtins      │    │ • Serialization  │    │ • Memory Map    │
│ • HIR Cache     │    │ • Compression    │    │ • Validation    │
│ • Bytecode      │    │ • Validation     │    │ • Integration   │
│ • GC Presets    │    │ • Optimization   │    │ • Performance   │
└─────────────────┘    └──────────────────┘    └─────────────────┘