Move the roam check into worthRoaming() and the memStatus routing into
heapEmitTarget() in Utils so the native tests reach them.
worthRoaming() roams for a gain of at least ROAM_MIN_GAIN_DB, as the
comment and the 6 dB commit said. The old check needed one dB more.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The emit to a newly connected client also stored the RSSI and time, which
restarted the 10s hold-off and hid a real change from the clients already
connected. The baseline moves into RssiBroadcast, which ignores
per-client emits, with unit tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
At -70 dBm the RSSI moves a dBm or two constantly, so the >1 dBm check
every 1.5s sent wifiStrength to every client about 270 times an hour.
That is extra traffic on an already lossy link and a state write in
Home Assistant for each one.
Broadcast on a channel change, or for a change of at least 3 dBm no
more than every 10s. A newly connected client still gets the current
value straight away.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
