Latency telemetry for non-interactive runs now measures each round

Telemetry is the usage data Claude Code sends back to Anthropic. A headless run is one without the interactive screen, for example when a script drives Claude Code. Speed data from these runs used to record one overhead figure and one time-to-first-response per turn. It now also records figures for each round of requests within a turn, including:

• query_round_count, the number of rounds
• query_overhead_total_ms, the total overhead in milliseconds
• time_to_first_response_first_round_ms, how long the first round took to start answering

The event recorded after a successful model request also gains an overhead figure and a breakdown of time not covered elsewhere.