Finish TODO #2 from PR #468: the last raw `cpu_scaling_factor()`
call-sites still used the static-only check (blind to the
sustained-load power-cap). Point them at the `cpu_perf_headroom()`
SUPERSET — it calls `cpu_scaling_factor()` internally + the
session-cached throttle probe, so it's always >= the old factor
(never LESS headroom, so CI stays green).
Migrated,
- `test_spawning`: the `fail_after(1 * ...)` smoke deadline
(#465-added).
- `test_inter_peer_cancellation`: `this_fast` budget.
- `test_docs_examples`: example-run `timeout`.
- `test_resource_cache`: fan-out `timeout`.
`test_cancellation` already used `cpu_perf_headroom()`; only its
explanatory comments still name the static helper.
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi
2e605da264