Paths and ports

Set environment variables before starting the workbench or a client wrapper.

Variable	Default	Contents
LLLM2_MODELS_DIR	~/models	GGUF checkpoints and downloads.
LLLM2_STATE_DIR	~/.local/state/lllm2	workbench.sqlite3, the panel lock, and the remote files remote-calls.json (owned serve calls, mode 0600) and remote-probes.json (GPU probe results).
LLLM2_ENGINE_HOME	~/.local/share/lllm2/engines	Newly compiled engines.
LLLM2_ENGINE_ROOTS	LLLM2_ENGINE_HOME	Colon-separated engine search roots; setting it replaces the defaults.
LLLM2_ENGINE_PORT	1920	Model server port on loopback. A remote backend’s local proxy uses the same port.
LLLM2_IDLE_TIMEOUT_MINUTES	30	Default idle stop for a remote backend, in whole minutes from 0 to 1440; 0 or off disables it. For lllm2 launch, --idle-timeout overrides it, and it overrides saved settings. The panel fills its idle field from it. lllm2 reads it at startup.

The panel defaults to 127.0.0.1:8082. Its controls use /api/*; model clients connect to the separate llama.cpp server on port 1920. Protocol support depends on the selected engine build.