Pi provider

Pi settings and models are installed readonly, so the llama.cpp provider is declared in chezmoi source and installed as ~/.pi/agent/models.json:

• Source: home/dot_pi/agent/readonly_models.json

,llama-cpp serve
pi --model llama-cpp/nemotron-3.5
pi --model llama-cpp/qwen3.6-35b-a3b
pi --model llama-cpp/qwen3.6-35b-a3b-instruct

The provider declares the llama.cpp router ids:

Field	Value / reason
Models	llama.cpp router ids
Base URL	http://127.0.0.1:8080/v1
API mode	openai-completions
Template compatibility	Qwen thinking-compatible
apiKey	!command form (!printf ...)

Provider keys use $ENV_VAR or !command syntax. Pi's startup migration therefore has nothing to rewrite and never attempts to write the read-only ~/.pi/agent/models.json.

If llama-server starts with --api-key, export LLAMA_CPP_API_KEY before launching Pi.