Behavioral changes:
Each wake word has its own timer.
Rapid repeats of the same phrase within the refractory window still get rejected (which is desirable).
A misfire of “Hey Jarvis” no longer locks out “Okay Nabu” immediately afterward.
If a user really wants to disable the gating, they can set:
"wake_word": {
"refractory_seconds": 0
}
and this code will treat it as “no refractory” (max(..., 0.0) above).