The host note now states the aiohttp IPv4 client is live, Core loaded it,
and home PPPoE IPv4 to 95598.csg.cn is currently blackholed while IPv6
works on gw. HA still has IPv6 disabled (W1N-85).
- Add tianqi weather recorder patch notes (W1N-75: _unrecorded_attributes)
- Document Bluetooth hci0 RTL8821CS instability (W1N-74) and eMMC lifetime
10% (W1N-76) as known issues
- Rewrite runbook known-issues section: all snapshot items resolved; link
hosts doc for the two remaining known issues