Project requires Xcode 16+, maybe not Xcode 15+ as stated in README?

[shawxxx]

Project requires Xcode 16+, maybe not Xcode 15+ as stated in README

Description

The README states "Xcode 15+" but the project cannot be opened with Xcode 15.2.

Error

The project 'OpenCodeClient' is damaged and cannot be opened.
Exception: didn't find classname for 'isa' key

Attempted fixes (all failed)

1. Changing objectVersion (77 → 73)
2. Changing LastUpgradeVersion (2610 → 1500)
3. Changing CreatedOnToolsVersion (26.1 → 15.0)
4. Clearing extended attributes

Root cause

The project uses Xcode 16-only features like PBXFileSystemSynchronizedRootGroup, which cannot be parsed by Xcode 15.

Suggestion

Maybe update README to state "Xcode 16+" instead of "Xcode 15+"