Add BMA456 tap detection with ESP-NOW notify and host snapshot API.

Slaves forward configured tap kinds to the master; goTool exposes CLI, dashboard, REST, and WebSocket with separate notify vs receive and 2s display cache.

Co-authored-by: Cursor <cursoragent@cursor.com>

goTool/cmd_clients.go

@@ -18,9 +18,17 @@ func runClients(sp *serialPort) error {
 	fmt.Printf("clients (%d):\n", len(clients))
 	for i, c := range clients {
 		mac := hex.EncodeToString(c.GetMac())
-		fmt.Printf("  [%d] id=%d mac=%s ver=%d available=%v used=%v last_ping=%d last_success_ping=%d\n",
+		fmt.Printf("  [%d] id=%d mac=%s ver=%d available=%v used=%v last_ping=%d last_success_ping=%d tap=%s/%s/%s\n",
 			i, c.GetId(), mac, c.GetVersion(), c.GetAvailable(), c.GetUsed(),
-			c.GetLastPing(), c.GetLastSuccessPing())
+			c.GetLastPing(), c.GetLastSuccessPing(),
+			boolFlag(c.GetTapNotifySingle()), boolFlag(c.GetTapNotifyDouble()), boolFlag(c.GetTapNotifyTriple()))
 	}
 	return nil
 }
+
+func boolFlag(v bool) string {
+	if v {
+		return "on"
+	}
+	return "off"
+}