attempt2 (arm 6) effective SPT_* knob VALUES — written 2026-09-14 ~15:00Z by doyle while the run was live.

Provenance: NOT captured from the live producer's environment block (the driver records post-overlay NAMES only; see attempt2-env.txt). Derived from the pinned driver source, run-attempt2.ps1 sha256 3dfed3e608f265636a61a6856ca26c1762bac565bda9c4ef5398a17b9b94a15a, lines 25-27, which are the only writers of these names after the scrub at lines 18-22:
  SPT_TEST_EPHEMERAL_ADVISORY_PORTS = 1
  SPT_ATTACH_IPC_DEADLINE_MS        = 30000
  SPT_ATTACH_GATE_WATCHDOG_MS       = 120000
Also set (non-SPT): NEXTEST_PROFILE=ci-windows, CARGO_BUILD_JOBS=2, HEAVY=<golden.yml expression at 7890ead3>.
These three values equal golden.yml @7890ead3 lines 101/110/123 verbatim. Independent corroboration: hertz's wrapper smoke with real child env probes, .spt/preserved/hertz-attachment-NO4JJOEL/windows-attempt2-environment-smoke.json.

Gap stated: a source-derived value is a derivation, not a measurement of the process. Next driver revision writes name=value for these non-secret knobs into the receipt (deployah K34HZDG2); routed to hertz.