llama.cpp and Ollama model discovery probed /models and /props with a
250ms timeout tuned for a loopback server. That cap also applied to a
host reached over the network, so a remote or LAN LLAMA_CPP_BASE_URL
(or OLLAMA_BASE_URL/OLLAMA_HOST) with normal round-trip latency timed
out, discovery returned no models, and the picker fell back to stale
127.0.0.1:8080 entries.
Select the probe timeout by host: strictly-loopback base URLs keep the
fast fail so a busy or foreign service on the default port never stalls
startup; every non-loopback host gets a generous discovery budget.
Fixes#7087
roboomp
ec2caea840