Probe extreme Set Slow Motion factors (P8 follow-up) #143

Follows #139 and P8 (probes/p8-slow-motion-wait). Owner decision (2026-11-03): measure a few extreme factors to decide whether Set Slow Motion affects the simulated script timeline at all.

Problem

P8 measured factors 50 and 90 with the 100 control: Total Time Elapsed advanced 16 ms per tick and Wait rounded up to whole 16 ms ticks, as at 100. After #139, every other factor ends a run not_modeled. Bastion or another real mode that uses another factor stops there.

Desired behavior

A probe measures Total Time Elapsed and Wait under extreme factors: the smallest value the client accepts, values below that (to observe clamping, such as 0 and a negative), and a value above 100. The probe follows docs/capture-convention.md, and its expected log states the hypothesis "no effect on the script timeline".

Acceptance criteria

• The probe is added under probes/, with expect.json, and runs in cargo test with runs: 0 until captured.
• The owner runs it in the client three times, and the capture is ingested with athena ingest.
• If every factor matches: the simulator treats Set Slow Motion as having no effect on the script timeline for the measured range (including clamped inputs), and the docs state the measured range.
• If any factor mismatches: the simulator keeps that factor not_modeled and docs/findings.md records the observation.