backend: don't require pairing code over BLE

Connecting to a BitBox02 over BLE already requires pairing, so the
noise pairing is redundant. This does not prevent confirming the
pairing code at any time after, it just means the confirmation is
optional.

```
go get github.com/BitBoxSwiss/bitbox02-api-go@4c21ece5b08182e2946362303347bc4b50906e46
go mod tidy
go mod vendor
```

Author: benma

backend/devices/bitbox02/device.go

@@ -51,6 +51,7 @@ func NewDevice(
 	product bitbox02common.Product,
 	config firmware.ConfigInterface,
 	communication firmware.Communication,
+	opts ...firmware.DeviceOption,
 ) *Device {
 	log := logging.Get().
 		WithGroup("device").
@@ -64,7 +65,9 @@ func NewDevice(
 			version,
 			&product,
 			config,
-			communication, logger{log},
+			communication,
+			logger{log},
+			opts...,
 		),
 		deviceID: deviceID,
 		log:      log,

backend/devices/usb/hid.go

@@ -53,6 +53,11 @@ type hidDeviceInfo struct {
 	hid.DeviceInfo
 }
 
+// IsBluetooth implements DeviceInfo.
+func (info hidDeviceInfo) IsBluetooth() bool {
+	return false
+}
+
 // VendorID implements DeviceInfo.
 func (info hidDeviceInfo) VendorID() int {
 	return int(info.DeviceInfo.VendorID)

backend/devices/usb/manager.go

@@ -28,6 +28,7 @@ import (
 	"github.com/BitBoxSwiss/bitbox-wallet-app/util/logging"
 	"github.com/BitBoxSwiss/bitbox-wallet-app/util/socksproxy"
 	bitbox02common "github.com/BitBoxSwiss/bitbox02-api-go/api/common"
+	"github.com/BitBoxSwiss/bitbox02-api-go/api/firmware"
 	"github.com/BitBoxSwiss/bitbox02-api-go/communication/u2fhid"
 	"github.com/BitBoxSwiss/bitbox02-api-go/util/semver"
 	"github.com/sirupsen/logrus"
@@ -46,6 +47,8 @@ const (
 
 // DeviceInfo contains the usb descriptor info and a way to open the device for reading and writing.
 type DeviceInfo interface {
+	// IsBluetooth means the communication layer is Bluetooth, otherwise USB.
+	IsBluetooth() bool
 	VendorID() int
 	ProductID() int
 	UsagePage() int
@@ -218,6 +221,7 @@ func (manager *Manager) makeBitBox02(deviceInfo DeviceInfo) (*bitbox02.Device, e
 		product,
 		bitbox02.NewConfig(manager.bitbox02ConfigDir),
 		u2fhid.NewCommunication(hidDevice, bitboxCMD),
+		firmware.WithOptionalNoisePairingConfirmation(deviceInfo.IsBluetooth()),
 	), nil
 }
 

backend/mobileserver/mobileserver.go

@@ -77,6 +77,7 @@ type GoReadWriteCloserInterface interface {
 
 // GoDeviceInfoInterface adapts usb.DeviceInfo's Open method to return the adapted ReadWriteCloser.
 type GoDeviceInfoInterface interface {
+	IsBluetooth() bool
 	VendorID() int
 	ProductID() int
 	UsagePage() int

frontends/android/BitBoxApp/app/src/main/java/ch/shiftcrypto/bitboxapp/GoViewModel.java

@@ -79,6 +79,9 @@ public long write(byte[] p0) throws Exception{
             throw new Exception("nope");
 
 
+        }
+        public boolean isBluetooth() {
+            return false;
         }
         public String product() {
             return device.getProductName();

frontends/ios/BitBoxApp/BitBoxApp/Bluetooth.swift

@@ -484,6 +484,10 @@ class BluetoothDeviceInfo: NSObject, MobileserverGoDeviceInfoInterfaceProtocol {
         return BluetoothReadWriteCloser(bluetoothManager: bluetoothManager)
     }
 
+    func isBluetooth() -> Bool {
+        return true
+    }
+
     func product() -> String {
         // TODO: return bluetoothManager.productStr() and have the backend identify and handle it
         return productInfo.product

go.mod

@@ -3,7 +3,7 @@ module github.com/BitBoxSwiss/bitbox-wallet-app
 go 1.23
 
 require (
-	github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250508091842-e5b786c4a88d
+	github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250526110026-4c21ece5b081
 	github.com/BitBoxSwiss/block-client-go v0.0.0-20241009081439-924dde98b9c1
 	github.com/btcsuite/btcd v0.24.2
 	github.com/btcsuite/btcd/btcec/v2 v2.3.4

go.sum

@@ -1,5 +1,5 @@
-github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250508091842-e5b786c4a88d h1:Zd6ISD5tzAFEsy+Td0XwmENqssuL+9aKHHBFyMpPUCg=
-github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250508091842-e5b786c4a88d/go.mod h1:lyYwD22hA6TQ8XNXx37VE75Exp6qYdgZgUAO4+lyhSU=
+github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250526110026-4c21ece5b081 h1:57aszTkvQz1aQcL9pbNUpyVepFuRlrBaoNyKV0rMdIM=
+github.com/BitBoxSwiss/bitbox02-api-go v0.0.0-20250526110026-4c21ece5b081/go.mod h1:lyYwD22hA6TQ8XNXx37VE75Exp6qYdgZgUAO4+lyhSU=
 github.com/BitBoxSwiss/block-client-go v0.0.0-20241009081439-924dde98b9c1 h1:5hjP8mYSVKFibesrz8L6U0Vp5zSJt0LwXB3DSZGhnSo=
 github.com/BitBoxSwiss/block-client-go v0.0.0-20241009081439-924dde98b9c1/go.mod h1:SJTiQZU9ggBzVKMni97rpNS9GddPKErndFXNSDrfEGc=
 github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=