1.4.12 — More patient device timeout

Raises the device HTTP timeout from 5s (config flow) / 8s (polling) to 15s. Memory-pressured devices (e.g. Echo Show 5) can stall their on-device API thread under GC, causing setup/polling to time out even when the network is fine; the longer timeout tolerates those stalls.

If a device is consistently timing out, it's usually under heavy memory load — lightening the HA dashboard it renders is the durable fix.