Add proxy routing and sing-box support

packages/flutter_tor/android/build.gradle

@@ -22,6 +22,16 @@ allprojects {
     }
 }
 
+def weblibreGoMobileAar = file("../../../native/go_mobile_runtime/build/weblibre-go.aar")
+def requireWebLibreGoMobileAar = {
+    if (!weblibreGoMobileAar.exists()) {
+        throw new GradleException(
+            "Missing combined gomobile runtime AAR: ${weblibreGoMobileAar}. " +
+                "Run native/go_mobile_runtime/scripts/build-android.sh from the repository root."
+        )
+    }
+}
+
 apply plugin: "com.android.library"
 apply plugin: "kotlin-android"
 
@@ -53,8 +63,9 @@ android {
         implementation("info.guardianproject:tor-android:0.4.9.6")
         implementation("info.guardianproject:jtorctl:0.4.5.7")
 
-        // Pluggable transports
-        implementation("com.netzarchitekten:IPtProxy:5.4.1")
+        // Pluggable transports are provided by the app-level combined gomobile AAR.
+        requireWebLibreGoMobileAar()
+        compileOnly(files(weblibreGoMobileAar))
 
         // Coroutines for async operations
         implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2")

packages/flutter_tor/android/src/main/kotlin/eu/weblibre/flutter_tor/FlutterTorPlugin.kt

@@ -1,6 +1,5 @@
 package eu.weblibre.flutter_tor
 
-import IPtProxy.Controller
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent

packages/flutter_tor/android/src/main/kotlin/eu/weblibre/flutter_tor/PluggableTransportManager.kt

@@ -2,9 +2,9 @@ package eu.weblibre.flutter_tor
 
 import android.content.Context
 import android.util.Log
-import IPtProxy.Controller
-import IPtProxy.IPtProxy
-import IPtProxy.OnTransportEvents
+import io.nekohasekai.IPtProxy.Controller
+import io.nekohasekai.IPtProxy.IPtProxy
+import io.nekohasekai.IPtProxy.OnTransportEvents
 import java.io.File
 
 /**

packages/flutter_tor/android/src/main/kotlin/eu/weblibre/flutter_tor/ProxyImpl.kt

@@ -19,11 +19,12 @@
  */
 package eu.weblibre.flutter_tor
 
-import IPtProxy.IPtProxy
 import eu.weblibre.flutter_tor.generated.IPtProxyController
 import eu.weblibre.flutter_tor.generated.TransportType
+import io.nekohasekai.IPtProxy.Controller
+import io.nekohasekai.IPtProxy.IPtProxy
 
-class ProxyImpl(val controller: IPtProxy.Controller) : IPtProxyController {
+class ProxyImpl(val controller: Controller) : IPtProxyController {
     override fun start(proxyType: TransportType, proxy: String): Long {
         val type = when (proxyType) {
             TransportType.SNOWFLAKE -> IPtProxy.Snowflake
@@ -55,4 +56,4 @@ class ProxyImpl(val controller: IPtProxy.Controller) : IPtProxyController {
 
         controller.stop(type)
     }
-}
+}

packages/flutter_tor/android/src/main/kotlin/eu/weblibre/flutter_tor/TorConfig.kt

@@ -1,7 +1,7 @@
 package eu.weblibre.flutter_tor
 
 import eu.weblibre.flutter_tor.generated.TorConfiguration
-import IPtProxy.IPtProxy
+import io.nekohasekai.IPtProxy.IPtProxy
 import java.io.File
 
 /**