docs: stability notes — pineapd crash sources + fixes on Pager 24.10.1

README.md

@@ -100,6 +100,26 @@ terminal I/O, and reboot persistence.
 - `www/` — vanilla JS SPA (no build step) + bundled xterm.js.
 - `payload.sh` + `pagerwebui.init` — Nautilus-style installer / procd service.
 
+## Stability notes (Pager 24.10.1)
+
+pineapd crash sources found and fixed on this firmware (verified on-device,
+zero crashes over sustained watches):
+
+1. **SSID-pool broadcast** — segfaults pineapd (~15s cadence). Kept disabled.
+2. **wlan2mon** — a 6GHz monitor this hardware never creates; hopping the
+   missing iface segfaults pineapd. Disabled.
+3. **Large refilled pool** — the pool list itself crashes pineapd even with
+   broadcast disabled. The health monitor clears it (collect refills).
+4. **wlan1mon fast-hopping 6GHz** — stalls pineapd's command socket; the
+   stock daemon's watchdog then SIGTERMs pineapd every ~30s. Bands pinned
+   to 5GHz (2.4GHz only on wlan0mon).
+5. **Socket collisions** — actively pinging pineapd from a health monitor
+   collides with the stock daemon's own socket writes. The monitor now
+   checks `pidof` only.
+
+`GET /api/health` reports pineapd/monitor state; the top bar shows a
+PINEAP OK / POOL OFF / PINEAPD DOWN chip.
+
 ## Security notes
 
 - Auth via device password validated against the daemon; HttpOnly session