* fix(agents): restore model-fetch info logs
* docs(logging): document [model-fetch] default info-level visibility
[model-fetch] response metadata is always emitted at info level
regardless of OPENCLAW_DEBUG_MODEL_TRANSPORT, so users see basic
model transport hygiene (provider, API, model, status, latency)
without needing debug flags.
* docs(logging): clarify model-fetch start metadata visibility