- Add SLZB06_HOST and CADDY_HOST_IP stubs to root .env.sample so cp -n covers all required vars
- Remove dead :-10.0.15.5 default from ha_configuration.yaml (CADDY_HOST_IP is required; default was unreachable)
- Genericise CADDY_HOST_IP comment in ha_configuration.yaml (removed hardcoded personal IP)
- Default zigbee2mqtt pan_id and network_key to GENERATE (remove personal network credentials from public blueprint)
- Remove hardcoded device list from zigbee2mqtt_configuration.yaml (Z2M builds this on pairing)
- Clarify README installation steps: root .env path, missing-var behaviour for SLZB06_HOST and CADDY_HOST_IP