fix(conductor): Apply review suggestions for track 'extract_radio_interface_kmp_20260320'

core/repository/src/commonMain/kotlin/org/meshtastic/core/repository/RadioTransportFactory.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2026 Meshtastic LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.meshtastic.core.repository
+
+import org.meshtastic.core.model.DeviceType
+import org.meshtastic.core.model.InterfaceId
+
+/**
+ * Creates [RadioTransport] instances for specific device addresses.
+ *
+ * Implemented per-platform to provide the correct hardware transport (BLE, Serial, TCP).
+ */
+interface RadioTransportFactory {
+    /** The device types supported by this factory. */
+    val supportedDeviceTypes: List<DeviceType>
+
+    /** Whether we are currently forced into using a mock interface (e.g., Firebase Test Lab). */
+    fun isMockInterface(): Boolean
+
+    /** Creates a transport for the given [address], or a NOP implementation if invalid/unsupported. */
+    fun createTransport(address: String, service: RadioInterfaceService): RadioTransport
+
+    /** Checks if the given [address] represents a valid, supported transport type. */
+    fun isAddressValid(address: String?): Boolean
+
+    /** Constructs a full radio address for the specific [interfaceId] and [rest] identifier. */
+    fun toInterfaceAddress(interfaceId: InterfaceId, rest: String): String
+}