Zig: Pointer Stability for ArrayLists

Zig's standard library now includes pointer stability locks for ArrayLists, a safety feature previously available only for HashMap containers. This technique requires developers to call `lockPointers()` when storing pointers to ArrayList elements and `unlockPointers()` when done, preventing memory safety bugs that occur when the ArrayList reallocates and invalidates existing pointers. The feature addresses a common source of memory errors where dependent data structures become corrupted when the underlying ArrayList grows beyond its capacity.