- Implement cache size limit of 8 entries and age limit of 30 days
- Add markUsedAndPrune method to handle cache cleanup when accessing entries
- Create getCacheEntries method to retrieve and sort cache entries by modification time
- Implement removeCacheDirectory method for recursive directory deletion
- Add unit tests covering expired and excess cache entry pruning scenarios
- Include cstring header in global headers and remove duplicate inclusion in generated code
- Update version from 1097 to 1098
- Replace direct php::concat calls with flattened concatenation using parseFlattenedConcat
- Add prepareConcatOperand method to handle proper string conversion for different types
- Implement unified foreach iterator using php::ForeachIterator for both arrays and objects
- Remove separate parseForeachObject method and consolidate iteration logic
- Add support for precompiled headers in GCC-like backends
- Implement PrecompiledHeaderManager for PCH preparation and caching
- Optimize build queue with SourceCompileQueue using largest-first sorting strategy
- Improve progress percentage calculation during compilation
- Add new test case for unified foreach iteration over different iterable types
韩天峰