Box64 Linux x86_64 Emulation v0.4.5-1: [WRAPPER] Fix my_readlink (#4212)

Executive Summary

readlink does not append a null at the end, so strncpy can't be used. The buf may not end with a null, so strstr and strcmp also can't be used. Concatenating cwd and path is incorrect, which get a string like /home/xx/proc/778/exe . The correct approach is to concatenate cwd with the first string in cmdline . Support box64 test_app , which is actually a relative path but does not start with a dot in cmdline .

Open Gaming Ecosystem & Proton Runtime Deep-Dive

From a graphics pipeline, kernel sub-system, and runtime compatibility perspective: - **Translation Efficiency:** Minimizing DirectX/Vulkan mapping overhead (DXVK, VKD3D-Proton) delivers deterministic frame times. - **Kernel Synchronization:** Integration of wineserver optimizations with fsync/futex primitives eradicates multi-threaded bottlenecks. - **Engine Neutrality:** Open engines like Godot provide a genuinely vendor-independent development target.

Impact on the Open Ecosystem

Solidifies Linux as an uncompromising, tier-one operating system for high-performance interactive 3D computing.