Field-verified crash stack on this firmware: SSID-pool broadcast (segfault),
wlan2mon hopping a nonexistent 6GHz iface (segfault), wlan1mon fast-hopping
6GHz channels (ASIO thread exit), and a large refilled pool. The fix path
now enforces: pool broadcast off, pool list cleared, wlan2mon off, wlan1mon
5GHz-only, wlan0mon 2.4GHz-only — idempotent, so collect refills self-heal.
8-minute continuous-PONG stability verified on-device.