Why gold presets matter

QitOS v0.4 moves from one-off provider wiring to reusable family-level harness defaults.

QitOS started with a simple idea:

one kernel, many agents.

v0.4 extends that idea to model families.

Instead of rewriting examples every time we try a new endpoint, we now resolve:

• a family preset
• a harness policy
• a transport adapter
• a protocol and parser pair

This matters because reproducible agent research is not only about trace files.

It is also about keeping the model-facing contract visible and stable.

That is why the v0.4 flagship example can switch across Qwen, Kimi, MiniMax, gpt-oss, and Gemma 4 without changing the agent implementation itself.