Crawl progress is a black box — 'crawling the web, this takes a minute…' needs traces the operator can watch

A didi crawl is a minute-plus of silence with one static status line. The model is actually narrating as it works — 'searching for Quell Foundation LinkedIn…' — and those traces exist in the response stream today; they just never leave prompt-runner. The operator should watch the agent work, not stare at an ellipsis.