Yeah this looks like OpenCode. I've never gotten good results with it. Wild that it has 120k stars on GitHub.
I've been able to get Gemini flash to be nearly as good as pro with the CC prompts. 1/10 the price 1/10 the cycle time. I find waiting 30s for the next turn painful now
https://github.com/Piebald-AI/claude-code-system-prompts
One nice bonus to doing this is that you can remove the guardrail statements that take attention.
Most of my custom agent stack is here, built on ADK: https://github.com/hofstadter-io/hof/tree/_next/lib/agent