- Add exported property to ClassDef and FunctionDef entities
- Implement #[NoExport] compile-time attribute processing
- Exclude NoExport-marked declarations from library stub generation
- Preserve original names during AST name resolution
- Add comprehensive test coverage for NoExport functionality
- Document NoExport attribute usage in MIXED_CPP_PHP.md
- Support NoExport with various namespace resolution patterns
- Apply NoExport cascading from classes to their methods
- Generate proper extern declarations for non-exported symbols
