Only Chat 1.0.5 source release

Public release notes

This curated source release derives from Only Chat 1.0.5 at commit d6b4a9ae3bceaaff132e122a2194f765365a779c. The public snapshot removes development-only handoff/patch notes and hard-coded personal filesystem paths. External Google Drive handoff and sync paths now require the supported environment variables or explicit configuration; they do not point at the original developer's filesystem by default. No runtime user data or credentials are included.

The bundled Sign in with ChatGPT DevKit retains its own noncommercial terms, as documented in the vendored license and third-party notices.