Module performance_optimizations 

Performance optimizations for the Ruchy compiler

PMAT A+ Quality Standards:

• Maximum cyclomatic complexity: 10
• No TODO/FIXME/HACK comments
• 100% test coverage for new functions

Structs

CacheStats

Cache performance statistics

CompilationCache

AST-based compilation cache with LRU eviction

ParserPool

Thread-safe parser pool for reuse

PoolStatsSummary

Summary of pool statistics

StringInterner

Memory-efficient string interning