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Phase 5 Part 0 — Headless Floor

Generated: 2026-04-18T12:22:02.077Z · Node v22.18.0 · win32 x64

60 s run, workload constant, active B0, seed 42. B0 never reduces or degrades, so any jank observed is pure harness noise — scheduler behaviour cannot contribute. This is the floor.

Chrome flags

--disable-background-timer-throttling
--disable-renderer-backgrounding
--disable-backgrounding-occluded-windows

Measurement

Window	Frames	Jank rate	P95 (ms)	Mean (ms)
all	1024	0.00%	5.10	5.03
recent (300)	300	0.00%	5.10	5.03

Gate decision

Live floor reference: 10% (Phase 4 verification).
Headless floor (this run): 0.00%
Outcome: PROCEED
Reason: Headless floor 0.00% < 3%. Go/No-Go threshold becomes relatively more discriminating.

Browser console errors

Failed to load resource: the server responded with a status of 404 (Not Found)