As much as I love my CLI tools, I just cannot go back to not having native built-in browser integration, links, etc which the (Mac) desktop apps like ChatGPT or Claude offer.

I do use Hermes sometimes, but it tends to keep growing skills and overhead over time, to the point it is becoming utterly slow and sluggish. The Desktop experience itself seems vibecoded without taste, in contrast to the core of Hermes, which is solid.

I wonder if there is an agent harness that has the strengths of Pi, but in a native Mac desktop app packaging?

Not native, but a webapp: https://github.com/rcarmo/piclaw