Scheduler soak test: sustained mixed load that stresses everything the recent scheduler work touched – EDF admit/wait/release/pick, sleep and block/unblock paths, and the spinlock-guarded lists under a 1ms tick.
Layout: two EDF periodic workers (50ms/8ms, 120ms/12ms), one RR churn thread (sleep cycles plus periodic self-blocks), one waker thread exercising cross-thread AuBlockThread/AuUnblockThread, and a supervisor that every ~5s validates all scheduler lists (linkage, tails, states), samples job counters and prints a summary line.
PASS criteria after 60 rounds (~5 min): zero list errors, both EDF workers kept producing jobs, supervisor never stalled. Miss counts are reported, not fatal (shared desktop, no WCET enforcement). Then every soak thread parks forever.
