* test(e2e): perf streams take a reasoning or tool-call delta as the first token, tool-call replies had no time_to_first_token
* test(e2e): perf users start at a random offset and jitter each interval by up to 25%, no more lockstep bursts at the planned rate
* test(e2e): small_bodies_5rps sends from the mixed case's callers (two teams, JWT users, keys in and out of teams) through the pre and post guardrail
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>