- Implement ArrayDef attribute for compile-time array type contracts
- Add support for list and map type definitions with key/value constraints
- Create ArrayDefinition and ArrayDefWritePlan data structures
- Integrate ArrayDef validation into assignment operations
- Add documentation for ArrayDef usage and limitations
- Support class value types, subclasses, and dynamic type checking
- Enable static property array dimension assignments
- Optimize literal assignments into variable declarations
- Add comprehensive test cases for various ArrayDef scenarios
- Updated default initial collection threshold from 10 MiB to 16 MiB
- Increased test loop iterations to accommodate new memory threshold
- Removed padding fields from native class test objects
- Adjusted gc-threshold test to allocate 1100000 objects instead of 300000
- Updated documentation to reflect new 16 MiB initial threshold value
- Modified multiple native class test files to align with new threshold settings
- Add $padding field to NativeFailedClonePressure class in failed-clone-finalizer.phpt
- Add $padding field to NativeFailedLifecyclePressure class in failed-lifecycle-escape.phpt
- Add $padding field to NativeFinalizerFiller class in finalizer-allocation.phpt
- Add $padding field to NativeFinalizerPressureObject class in finalizer-inheritance-exception.phpt
- Add multiple padding fields ($padding1, $padding2, $padding3) to NativeGcThresholdValue class in gc-threshold.phpt
- Add $padding field to NativeLifecycleFiller class in lifecycle-exceptions.phpt
- Update native heap memory layout documentation with fixed header size information
- Clarify that GC header uses two machine words (16 bytes on 64-bit platforms)
- Explain that object size, alignment and callbacks are stored in static NativeTypeDescriptor
- Remove mention of initial
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