refactor patches and bump to 1.17.2

zephcore/include/mesh/Radio.h

@@ -50,6 +50,11 @@ public:
 	 * update stats, maybe step the staircase (auto mode). */
 	virtual void cadMaintenance() {}
 
+	/** Receiver hygiene: deaf-aware AGC unstick and temperature-drift
+	 *  recalibration.  Both sleep the radio, so this is called only from the
+	 *  maintenance tick, never from a packet path.  Default: no-op. */
+	virtual void agcMaintenance() {}
+
 	/* Milliseconds until this radio's periodic work (noise floor sampling,
 	 * CAD probing/decay) next needs a call, or MAINTENANCE_IDLE when it has
 	 * nothing pending.  Radios with no periodic work keep the default. */