docs(ha): relocated to lizacer; remove KVM-on-Agap install instructions

Home-Assistant.md

@@ -1,63 +1,25 @@
 # Home Assistant
 
-Runs as a KVM virtual machine on Agap.
+**Relocated to lizacer on 2026-05-22.** Home Assistant no longer runs on Agap.
 
-## Install libvirt
+## Current location
 
-```bash
+- **Host:** lizacer (`192.168.1.4`)
-sudo apt update
+- **Form:** Docker container (`ghcr.io/home-assistant/home-assistant:stable`)
-sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virt-manager
+- **API:** `http://192.168.1.4:8123`
-```
+- **Public URL:** `https://haos.alogins.net`
 
-## Download Image
+Co-located on lizacer:
 
-[Download HAOS for KVM](https://www.home-assistant.io/installation/linux/)
+- `zigbee2mqtt` — Zigbee bridge (replaces the previous Sonoff dongle / ZHA setup)
+- `mosquitto` — MQTT broker for zigbee2mqtt ↔ HA
 
-Extract and move:
+## What was on Agap
 
-```bash
+A HAOS KVM VM (`haos_ova-17.1.qcow2`, 4 GB RAM, 2 vCPU, br0 bridge, UEFI). The VM and its disk image were removed via `virsh undefine haos --nvram --remove-all-storage` on 2026-05-22.
-xz -d haos_ova-*.qcow2.xz
-mv haos_ova-*.qcow2 /var/lib/libvirt/images/
-```
 
-## Install VM
+## Zabbix alerting
 
-```bash
+HA still pushes alerts to Zabbix via `rest_command` → trapper items on the Zabbix host **HA Agap** (host name is legacy — not renamed yet). Water leak, motion, and device-availability automations are owned by the HA config on lizacer.
-virt-install \
-  --name haos \
-  --description "Home Assistant OS" \
-  --os-variant=ubuntu24.04 \
-  --ram=4096 \
-  --vcpus=2 \
-  --disk /var/lib/libvirt/images/haos_ova-16.2.qcow2,bus=scsi \
-  --controller type=scsi,model=virtio-scsi \
-  --import \
-  --graphics none \
-  --boot uefi \
-  --network bridge=br0
-```
 
-## Post-install
+Entity IDs that started as ZHA (`binary_sensor.0xa4c1...`, `binary_sensor.hobeian_zg_222z*`) may have changed after the zigbee2mqtt migration. Verify before relying on names in new automations or Zabbix items.
-
-- If boot fails, disable Secure Boot in UEFI firmware settings ([reference](https://www.reddit.com/r/homeassistant/comments/198yg1a/trying_to_install_ha_as_a_virtual_machine_in/))
-- Find assigned IP at router admin panel
-
-## Zabbix Alerting
-
-HA pushes alerts to Zabbix via `rest_command` → Zabbix `history.push` API (trapper items).
-
-### Water Leak Sensors
-
-3x HOBEIAN ZG-222Z Zigbee moisture sensors:
-
-| Entity | Room |
-|--------|------|
-| `binary_sensor.hobeian_zg_222z` | Kitchen |
-| `binary_sensor.hobeian_zg_222z_2` | Bathroom |
-| `binary_sensor.hobeian_zg_222z_3` | Laundry |
-
-- Sensor ON → automation sends room name to Zabbix trapper item `water.leak` on host "HA Agap"
-- Zabbix trigger fires Disaster alert: "Water leak detected in {room}"
-- All sensors OFF → automation sends "ok" to clear
-
-Config: `rest_command` entries in `configuration.yaml`, automations `water_leak_alert` and `water_leak_clear`.