Upgrade the game from Zig 0.14 to Zig 0.16.

Update the build graph for root modules, pin raylib-zig 6.0, and migrate ArrayList, BoundedArray, process.Init, and the new Io APIs.

Co-authored-by: me <me@verse.cafe>
f81655efc6Cursor Agent committed on 8/24/2026, 5:02:35 AMparent3fbf37e
9 files changed+89-179