Merge a5641700ed into da4b521aba

2026-03-30 14:37:33 +00:00 · 2026-03-30 14:37:33 +00:00 · c3794ed024
parent da4b521aba a5641700ed
commit c3794ed024
39 changed files with 4189 additions and 25 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -16,6 +16,9 @@ on:
 permissions:
  contents: write

+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 jobs:
  build-windows:
    runs-on: windows-latest
@ -318,8 +321,99 @@ jobs:
            dist/TgWsProxy_linux_amd64
            dist/TgWsProxy_linux_amd64.deb

+  build-android:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    env:
+      ANDROID_APK_STANDARD_NAME: tg-ws-proxy-android-${{ github.event.inputs.version }}.apk
+      ANDROID_APK_LEGACY32_NAME: tg-ws-proxy-android-${{ github.event.inputs.version }}-legacy32.apk
+    defaults:
+      run:
+        working-directory: android
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Validate Android release signing secrets
+        env:
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+          ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+        run: |
+          test -n "$ANDROID_KEYSTORE_BASE64" || { echo "Missing secret: ANDROID_KEYSTORE_BASE64"; exit 1; }
+          test -n "$ANDROID_KEYSTORE_PASSWORD" || { echo "Missing secret: ANDROID_KEYSTORE_PASSWORD"; exit 1; }
+          test -n "$ANDROID_KEY_ALIAS" || { echo "Missing secret: ANDROID_KEY_ALIAS"; exit 1; }
+          test -n "$ANDROID_KEY_PASSWORD" || { echo "Missing secret: ANDROID_KEY_PASSWORD"; exit 1; }
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: "17"
+          cache: gradle
+          cache-dependency-path: |
+            android/settings.gradle.kts
+            android/build.gradle.kts
+            android/gradle.properties
+            android/app/build.gradle.kts
+
+      - name: Set up Python 3.12
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+
+      - name: Set up Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Accept Android SDK licenses
+        run: yes | sdkmanager --licenses > /dev/null
+
+      - name: Install Android SDK packages
+        run: sdkmanager "platforms;android-34" "build-tools;34.0.0"
+
+      - name: Prepare Android release keystore
+        env:
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+        run: |
+          printf '%s' "$ANDROID_KEYSTORE_BASE64" | base64 --decode > "$RUNNER_TEMP/android-release.keystore"
+          test -s "$RUNNER_TEMP/android-release.keystore"
+
+      - name: Build Android release APKs
+        env:
+          LOCAL_CHAQUOPY_REPO: ${{ github.workspace }}/android/.m2-chaquopy-ci
+          ANDROID_KEYSTORE_FILE: ${{ runner.temp }}/android-release.keystore
+          ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+        run: |
+          chmod +x gradlew build-local-debug.sh
+          ./build-local-debug.sh assembleStandardRelease
+          ./build-local-debug.sh assembleLegacy32Release
+
+      - name: Rename APKs
+        run: |
+          cp app/build/outputs/apk/standard/release/app-standard-release.apk \
+            "app/build/outputs/apk/standard/release/$ANDROID_APK_STANDARD_NAME"
+          cp app/build/outputs/apk/legacy32/release/app-legacy32-release.apk \
+            "app/build/outputs/apk/legacy32/release/$ANDROID_APK_LEGACY32_NAME"
+
+      - name: Stage Android release artifacts
+        run: |
+          mkdir -p dist
+          cp "app/build/outputs/apk/standard/release/$ANDROID_APK_STANDARD_NAME" "dist/$ANDROID_APK_STANDARD_NAME"
+          cp "app/build/outputs/apk/legacy32/release/$ANDROID_APK_LEGACY32_NAME" "dist/$ANDROID_APK_LEGACY32_NAME"
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: TgWsProxy-android-release
+          path: |
+            android/dist/${{ env.ANDROID_APK_STANDARD_NAME }}
+            android/dist/${{ env.ANDROID_APK_LEGACY32_NAME }}
+
  release:
-    needs: [build-windows, build-win7, build-macos, build-linux]
+    needs: [build-windows, build-win7, build-macos, build-linux, build-android]
    runs-on: ubuntu-latest
    if: ${{ github.event.inputs.make_release == 'true' }}
    steps:
@ -329,6 +423,12 @@ jobs:
          path: dist
          merge-multiple: true

+      - name: Download Android build
+        uses: actions/download-artifact@v8
+        with:
+          name: TgWsProxy-android-release
+          path: dist
+
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
@ -343,6 +443,8 @@ jobs:
            dist/TgWsProxy_macos_universal.dmg
            dist/TgWsProxy_linux_amd64
            dist/TgWsProxy_linux_amd64.deb
+            dist/tg-ws-proxy-android-${{ github.event.inputs.version }}.apk
+            dist/tg-ws-proxy-android-${{ github.event.inputs.version }}-legacy32.apk
          draft: false
          prerelease: false
        env:
--- a/.gitignore
+++ b/.gitignore
@ -16,6 +16,18 @@ build/
 .idea/
 *.swp
 *.swo
+.gradle/
+.gradle-local/
+android/.gradle-local/
+android/.m2-chaquopy*/
+local.properties
+android/.idea/
+android/build/
+android/app/build/
+android/app/build
+android/*.jks
+*.keystore
+android/*.keystore.properties

 # OS
 Thumbs.db
--- a/README.md
+++ b/README.md
@ -83,6 +83,23 @@ chmod +x TgWsProxy_linux_amd64

 При первом запуске откроется окно с инструкцией. Приложение работает в системном трее (требуется AppIndicator).

+### Android
+
+Перейдите на [страницу релизов](https://github.com/Flowseal/tg-ws-proxy/releases) и скачайте подписанный APK вида **`tg-ws-proxy-android-vX.Y.Z.apk`**.
+
+После установки:
+
+- откройте приложение
+- проверьте `Android background limits`
+- при необходимости отключите battery optimization и снимите background restrictions
+- нажмите **Start Service**
+- нажмите **Open in Telegram**
+
+Что важно для стабильной работы на Android:
+
+- разрешите уведомления
+- отключите battery optimization для приложения
+
 ## Установка из исходников

 ### Консольный proxy
@ -121,6 +138,20 @@ tg-ws-proxy-tray-linux
 tg-ws-proxy [--port PORT] [--host HOST] [--dc-ip DC:IP ...] [-v]
 ```

+### Android debug APK
+
+Требуются JDK 17, Android SDK и Gradle. Локальная debug-сборка:
+
+```bash
+./android/build-local-debug.sh assembleStandardDebug
+```
+
+Результат:
+
+```text
+android/app/build/outputs/apk/standard/debug/app-standard-debug.apk
+```
+
 **Аргументы:**

 | Аргумент | По умолчанию | Описание |
@ -178,6 +209,26 @@ tg-ws-proxy-tray-linux = "linux:main"
   - **Порт:** `1443` (или переопределенный вами)
   - **Secret:** из настроек или логов

+## Настройка Telegram Android
+
+### Автоматически
+
+В приложении нажмите **Open in Telegram** после запуска foreground service.
+
+### Вручную
+
+1. Telegram → **Настройки** → **Данные и память** → **Настройки прокси**
+2. Добавить прокси:
+   - **Тип:** MTProto
+   - **Сервер:** `127.0.0.1`
+   - **Порт:** `1443`
+   - **Secret:** из настроек приложения
+
+Важно:
+
+- сначала должен быть запущен foreground service
+- если Telegram был уже открыт, иногда проще закрыть и открыть его заново после запуска прокси
+
 ## Конфигурация

 Tray-приложение хранит данные в:
@ -217,7 +268,6 @@ Tray-приложение хранит данные в:
 - Intel macOS 10.15+
 - Apple Silicon macOS 11.0+
 - Linux x86_64 (требуется AppIndicator для системного трея)
-
 ## Лицензия

 [MIT License](LICENSE)
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@ -0,0 +1,170 @@
+import org.gradle.api.tasks.Sync
+import org.gradle.api.GradleException
+import java.io.File
+
+plugins {
+    id("com.android.application")
+    id("com.chaquo.python")
+    id("org.jetbrains.kotlin.android")
+}
+
+fun loadProxyVersionName(): String {
+    val versionFile = rootProject.projectDir.resolve("../proxy/__init__.py")
+    val match = Regex("""__version__\s*=\s*"([^"]+)"""")
+        .find(versionFile.readText())
+        ?: throw GradleException("Failed to parse proxy version from ${versionFile.absolutePath}")
+    return match.groupValues[1]
+}
+
+data class ReleaseSigningEnv(
+    val keystoreFile: File,
+    val storePassword: String,
+    val keyAlias: String,
+    val keyPassword: String,
+)
+
+fun requiredEnv(name: String): String {
+    return System.getenv(name)?.takeIf { it.isNotBlank() }
+        ?: throw GradleException("Missing required environment variable: $name")
+}
+
+fun loadReleaseSigningEnv(releaseSigningRequested: Boolean): ReleaseSigningEnv? {
+    val keystorePath = System.getenv("ANDROID_KEYSTORE_FILE")?.takeIf { it.isNotBlank() }
+    val anySigningEnvProvided = listOf(
+        keystorePath,
+        System.getenv("ANDROID_KEYSTORE_PASSWORD"),
+        System.getenv("ANDROID_KEY_ALIAS"),
+        System.getenv("ANDROID_KEY_PASSWORD"),
+    ).any { !it.isNullOrBlank() }
+
+    if (!releaseSigningRequested && !anySigningEnvProvided) {
+        return null
+    }
+
+    val keystoreFile = File(requiredEnv("ANDROID_KEYSTORE_FILE"))
+    if (!keystoreFile.isFile) {
+        throw GradleException("ANDROID_KEYSTORE_FILE does not exist: ${keystoreFile.absolutePath}")
+    }
+
+    return ReleaseSigningEnv(
+        keystoreFile = keystoreFile,
+        storePassword = requiredEnv("ANDROID_KEYSTORE_PASSWORD"),
+        keyAlias = requiredEnv("ANDROID_KEY_ALIAS"),
+        keyPassword = requiredEnv("ANDROID_KEY_PASSWORD"),
+    )
+}
+
+val stagedPythonSourcesDir = layout.buildDirectory.dir("generated/chaquopy/python")
+val stagePythonSources by tasks.registering(Sync::class) {
+    from(rootProject.projectDir.resolve("../proxy")) {
+        into("proxy")
+    }
+    from(rootProject.projectDir.resolve("../utils")) {
+        into("utils")
+    }
+    into(stagedPythonSourcesDir)
+}
+val releaseSigningRequested = gradle.startParameter.taskNames.any {
+    it.contains("release", ignoreCase = true)
+}
+val releaseSigningEnv = loadReleaseSigningEnv(releaseSigningRequested)
+val appVersionName = loadProxyVersionName()
+
+android {
+    namespace = "org.flowseal.tgwsproxy"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "org.flowseal.tgwsproxy"
+        minSdk = 26
+        targetSdk = 34
+        versionCode = 1
+        versionName = appVersionName
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    flavorDimensions += "runtime"
+    productFlavors {
+        create("standard") {
+            dimension = "runtime"
+            ndk {
+                abiFilters += listOf("arm64-v8a", "x86_64")
+            }
+        }
+        create("legacy32") {
+            dimension = "runtime"
+            versionNameSuffix = "-legacy32"
+            ndk {
+                abiFilters += listOf("armeabi-v7a")
+            }
+        }
+    }
+
+    signingConfigs {
+        if (releaseSigningEnv != null) {
+            create("release") {
+                storeFile = releaseSigningEnv.keystoreFile
+                storePassword = releaseSigningEnv.storePassword
+                keyAlias = releaseSigningEnv.keyAlias
+                keyPassword = releaseSigningEnv.keyPassword
+            }
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+            if (releaseSigningEnv != null) {
+                signingConfig = signingConfigs.getByName("release")
+            }
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+
+    buildFeatures {
+        viewBinding = true
+    }
+}
+
+chaquopy {
+    productFlavors {
+        getByName("standard") {
+            version = "3.12"
+        }
+        getByName("legacy32") {
+            version = "3.11"
+        }
+    }
+    sourceSets {
+        getByName("main") {
+            srcDir("src/main/python")
+            srcDir(stagePythonSources)
+        }
+    }
+}
+
+dependencies {
+    implementation("androidx.core:core-ktx:1.13.1")
+    implementation("androidx.appcompat:appcompat:1.7.0")
+    implementation("androidx.activity:activity-ktx:1.9.2")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.6")
+    implementation("androidx.lifecycle:lifecycle-service:2.8.6")
+    implementation("com.google.android.material:material:1.12.0")
+
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test.ext:junit:1.2.1")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.6.1")
+}
--- a/android/app/proguard-rules.pro
+++ b/android/app/proguard-rules.pro
@ -0,0 +1 @@
+# Intentionally empty for the initial Android shell.
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_proxy_app"
+        android:label="@string/app_name"
+        android:roundIcon="@drawable/ic_proxy_app"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.TgWsProxy">
+
+        <activity
+            android:name=".LogViewerActivity"
+            android:exported="false" />
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service
+            android:name=".ProxyForegroundService"
+            android:enabled="true"
+            android:exported="false"
+            android:foregroundServiceType="dataSync" />
+    </application>
+
+</manifest>
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/AndroidSystemStatus.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/AndroidSystemStatus.kt
@ -0,0 +1,62 @@
+package org.flowseal.tgwsproxy
+
+import android.app.ActivityManager
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.os.PowerManager
+import android.provider.Settings
+
+data class AndroidSystemStatus(
+    val ignoringBatteryOptimizations: Boolean,
+    val backgroundRestricted: Boolean,
+) {
+    val canKeepRunningReliably: Boolean
+        get() = ignoringBatteryOptimizations && !backgroundRestricted
+
+    companion object {
+        fun read(context: Context): AndroidSystemStatus {
+            val powerManager = context.getSystemService(Context.POWER_SERVICE) as PowerManager
+            val activityManager = context.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
+
+            val ignoringBatteryOptimizations = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                powerManager.isIgnoringBatteryOptimizations(context.packageName)
+            } else {
+                true
+            }
+
+            val backgroundRestricted = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                activityManager.isBackgroundRestricted
+            } else {
+                false
+            }
+
+            return AndroidSystemStatus(
+                ignoringBatteryOptimizations = ignoringBatteryOptimizations,
+                backgroundRestricted = backgroundRestricted,
+            )
+        }
+
+        fun openBatteryOptimizationSettings(context: Context) {
+            val intent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS).apply {
+                    data = Uri.parse("package:${context.packageName}")
+                }
+            } else {
+                Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
+                    data = Uri.fromParts("package", context.packageName, null)
+                }
+            }
+
+            context.startActivity(intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK))
+        }
+
+        fun openAppSettings(context: Context) {
+            val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
+                data = Uri.fromParts("package", context.packageName, null)
+            }
+            context.startActivity(intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK))
+        }
+    }
+}
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/LogViewerActivity.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/LogViewerActivity.kt
@ -0,0 +1,53 @@
+package org.flowseal.tgwsproxy
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import org.flowseal.tgwsproxy.databinding.ActivityLogViewerBinding
+import java.io.File
+
+class LogViewerActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityLogViewerBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityLogViewerBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        binding.refreshLogsButton.setOnClickListener { renderLog() }
+        binding.closeLogsButton.setOnClickListener { finish() }
+
+        renderLog()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        renderLog()
+    }
+
+    private fun renderLog() {
+        val logFile = File(filesDir, "tg-ws-proxy/proxy.log")
+        binding.logPathValue.text = logFile.absolutePath
+        binding.logContentValue.text = readLogTail(logFile)
+    }
+
+    private fun readLogTail(logFile: File, maxChars: Int = 40000): String {
+        if (!logFile.isFile) {
+            return getString(R.string.logs_empty)
+        }
+
+        val text = runCatching {
+            logFile.readText(Charsets.UTF_8)
+        }.getOrElse { error ->
+            return getString(R.string.logs_read_failed, error.message ?: error.javaClass.simpleName)
+        }
+
+        if (text.isBlank()) {
+            return getString(R.string.logs_empty)
+        }
+        if (text.length <= maxChars) {
+            return text
+        }
+
+        return getString(R.string.logs_truncated_prefix) + "\n\n" + text.takeLast(maxChars)
+    }
+}
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/MainActivity.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/MainActivity.kt
@ -0,0 +1,330 @@
+package org.flowseal.tgwsproxy
+
+import android.Manifest
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.content.ContextCompat
+import androidx.core.view.isVisible
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.flowseal.tgwsproxy.databinding.ActivityMainBinding
+
+class MainActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var settingsStore: ProxySettingsStore
+    private var currentUpdateStatus: ProxyUpdateStatus? = null
+
+    private val notificationPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission(),
+    ) { granted ->
+        if (!granted) {
+            Toast.makeText(
+                this,
+                "Без уведомлений Android может скрыть foreground service.",
+                Toast.LENGTH_LONG,
+            ).show()
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        settingsStore = ProxySettingsStore(this)
+        setContentView(binding.root)
+
+        binding.startButton.setOnClickListener { onStartClicked() }
+        binding.stopButton.setOnClickListener { ProxyForegroundService.stop(this) }
+        binding.restartButton.setOnClickListener { onRestartClicked() }
+        binding.saveButton.setOnClickListener { onSaveClicked(showMessage = true) }
+        binding.openLogsButton.setOnClickListener { onOpenLogsClicked() }
+        binding.openTelegramButton.setOnClickListener { onOpenTelegramClicked() }
+        binding.openReleasePageButton.setOnClickListener { onOpenReleasePageClicked() }
+        binding.checkUpdatesSwitch.setOnCheckedChangeListener { _, _ ->
+            renderUpdateStatus(currentUpdateStatus, binding.checkUpdatesSwitch.isChecked)
+        }
+        binding.disableBatteryOptimizationButton.setOnClickListener {
+            AndroidSystemStatus.openBatteryOptimizationSettings(this)
+        }
+        binding.openAppSettingsButton.setOnClickListener {
+            AndroidSystemStatus.openAppSettings(this)
+        }
+
+        val config = settingsStore.load()
+        renderConfig(config)
+        if (config.checkUpdates) {
+            refreshUpdateStatus(checkNow = true)
+        } else {
+            currentUpdateStatus = null
+            renderUpdateStatus(null, false)
+        }
+        requestNotificationPermissionIfNeeded()
+        observeServiceState()
+        renderSystemStatus()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        renderSystemStatus()
+    }
+
+    private fun onSaveClicked(showMessage: Boolean): NormalizedProxyConfig? {
+        val validation = collectConfigFromForm().validate()
+        val config = validation.normalized
+        if (config == null) {
+            binding.errorText.text = validation.errorMessage
+            binding.errorText.isVisible = true
+            return null
+        }
+
+        binding.errorText.isVisible = false
+        settingsStore.save(config)
+        if (showMessage) {
+            Snackbar.make(binding.root, R.string.settings_saved, Snackbar.LENGTH_SHORT).show()
+        }
+        if (config.checkUpdates) {
+            refreshUpdateStatus(checkNow = true)
+        } else {
+            currentUpdateStatus = null
+            renderUpdateStatus(null, false)
+        }
+        return config
+    }
+
+    private fun onStartClicked() {
+        onSaveClicked(showMessage = false) ?: return
+        ProxyForegroundService.start(this)
+        Snackbar.make(binding.root, R.string.service_start_requested, Snackbar.LENGTH_SHORT).show()
+    }
+
+    private fun onRestartClicked() {
+        onSaveClicked(showMessage = false) ?: return
+        ProxyForegroundService.restart(this)
+        Snackbar.make(binding.root, R.string.service_restart_requested, Snackbar.LENGTH_SHORT).show()
+    }
+
+    private fun onOpenLogsClicked() {
+        startActivity(Intent(this, LogViewerActivity::class.java))
+    }
+
+    private fun onOpenTelegramClicked() {
+        val config = onSaveClicked(showMessage = false) ?: return
+        if (!TelegramProxyIntent.open(this, config)) {
+            Snackbar.make(binding.root, R.string.telegram_not_found, Snackbar.LENGTH_LONG).show()
+        }
+    }
+
+    private fun renderConfig(config: ProxyConfig) {
+        binding.hostInput.setText(config.host)
+        binding.portInput.setText(config.portText)
+        binding.secretInput.setText(config.secretText)
+        binding.dcIpInput.setText(config.dcIpText)
+        binding.logMaxMbInput.setText(config.logMaxMbText)
+        binding.bufferKbInput.setText(config.bufferKbText)
+        binding.poolSizeInput.setText(config.poolSizeText)
+        binding.checkUpdatesSwitch.isChecked = config.checkUpdates
+        binding.verboseSwitch.isChecked = config.verbose
+        renderUpdateStatus(currentUpdateStatus, config.checkUpdates)
+    }
+
+    private fun collectConfigFromForm(): ProxyConfig {
+        return ProxyConfig(
+            host = binding.hostInput.text?.toString().orEmpty(),
+            portText = binding.portInput.text?.toString().orEmpty(),
+            secretText = binding.secretInput.text?.toString().orEmpty(),
+            dcIpText = binding.dcIpInput.text?.toString().orEmpty(),
+            logMaxMbText = binding.logMaxMbInput.text?.toString().orEmpty(),
+            bufferKbText = binding.bufferKbInput.text?.toString().orEmpty(),
+            poolSizeText = binding.poolSizeInput.text?.toString().orEmpty(),
+            checkUpdates = binding.checkUpdatesSwitch.isChecked,
+            verbose = binding.verboseSwitch.isChecked,
+        )
+    }
+
+    private fun onOpenReleasePageClicked() {
+        val url = currentUpdateStatus?.htmlUrl ?: "https://github.com/Flowseal/tg-ws-proxy/releases/latest"
+        val opened = runCatching {
+            startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)))
+        }.isSuccess
+        if (!opened) {
+            Snackbar.make(binding.root, R.string.release_page_open_failed, Snackbar.LENGTH_LONG).show()
+        }
+    }
+
+    private fun refreshUpdateStatus(checkNow: Boolean) {
+        lifecycleScope.launch {
+            val status = runCatching {
+                withContext(Dispatchers.IO) {
+                    PythonProxyBridge.getUpdateStatus(this@MainActivity, checkNow)
+                }
+            }.getOrElse { exc ->
+                ProxyUpdateStatus(
+                    currentVersion = currentAppVersionName(),
+                    error = exc.message ?: exc.javaClass.simpleName,
+                )
+            }
+            currentUpdateStatus = status
+            renderUpdateStatus(status, binding.checkUpdatesSwitch.isChecked)
+        }
+    }
+
+    private fun renderUpdateStatus(status: ProxyUpdateStatus?, checkUpdatesEnabled: Boolean) {
+        val currentVersion = status?.currentVersion?.takeIf { it.isNotBlank() } ?: currentAppVersionName()
+        binding.currentVersionValue.text = getString(
+            R.string.updates_current_version_format,
+            currentVersion,
+        )
+        binding.updateStatusValue.text = when {
+            !checkUpdatesEnabled -> {
+                getString(R.string.updates_status_disabled)
+            }
+            status == null -> {
+                getString(R.string.updates_status_initial)
+            }
+            !status.error.isNullOrBlank() -> {
+                getString(R.string.updates_status_error, status.error)
+            }
+            !status.checked -> {
+                getString(R.string.updates_status_idle)
+            }
+            status.hasUpdate && !status.latestVersion.isNullOrBlank() -> {
+                getString(
+                    R.string.updates_status_available,
+                    status.latestVersion,
+                    status.currentVersion,
+                )
+            }
+            status.aheadOfRelease -> {
+                getString(R.string.updates_status_newer, status.currentVersion)
+            }
+            else -> {
+                getString(R.string.updates_status_latest, status.currentVersion)
+            }
+        }
+    }
+
+    private fun currentAppVersionName(): String {
+        return runCatching {
+            @Suppress("DEPRECATION")
+            packageManager.getPackageInfo(packageName, 0).versionName
+        }.getOrNull().orEmpty().ifBlank { "unknown" }
+    }
+
+    private fun observeServiceState() {
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                combine(
+                    ProxyServiceState.isStarting,
+                    ProxyServiceState.isRunning,
+                ) { isStarting, isRunning ->
+                    isStarting to isRunning
+                }.collect { (isStarting, isRunning) ->
+                    binding.statusValue.text = getString(
+                        when {
+                            isStarting -> R.string.status_starting
+                            isRunning -> R.string.status_running
+                            else -> R.string.status_stopped
+                        },
+                    )
+                    binding.startButton.isEnabled = !isStarting && !isRunning
+                    binding.stopButton.isEnabled = isStarting || isRunning
+                    binding.restartButton.isEnabled = !isStarting
+                }
+            }
+        }
+
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                combine(
+                    ProxyServiceState.activeConfig,
+                    ProxyServiceState.isStarting,
+                ) { config, isStarting ->
+                    config to isStarting
+                }.collect { (config, isStarting) ->
+                    binding.serviceHint.text = if (config == null) {
+                        getString(R.string.service_hint_idle)
+                    } else if (isStarting) {
+                        getString(
+                            R.string.service_hint_starting,
+                            config.host,
+                            config.port,
+                        )
+                    } else {
+                        getString(
+                            R.string.service_hint_running,
+                            config.host,
+                            config.port,
+                        )
+                    }
+                }
+            }
+        }
+
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                ProxyServiceState.lastError.collect { error ->
+                    if (error.isNullOrBlank()) {
+                        binding.lastErrorCard.isVisible = false
+                    } else {
+                        binding.lastErrorValue.text = error
+                        binding.lastErrorCard.isVisible = true
+                    }
+                }
+            }
+        }
+    }
+
+    private fun renderSystemStatus() {
+        val status = AndroidSystemStatus.read(this)
+
+        binding.systemStatusValue.text = getString(
+            if (status.canKeepRunningReliably) {
+                R.string.system_status_ready
+            } else {
+                R.string.system_status_attention
+            },
+        )
+
+        val lines = mutableListOf<String>()
+        lines += if (status.ignoringBatteryOptimizations) {
+            getString(R.string.system_check_battery_ignored)
+        } else {
+            getString(R.string.system_check_battery_active)
+        }
+        lines += if (status.backgroundRestricted) {
+            getString(R.string.system_check_background_restricted)
+        } else {
+            getString(R.string.system_check_background_ok)
+        }
+        lines += getString(R.string.system_check_oem_note)
+        binding.systemStatusHint.text = lines.joinToString("\n")
+
+        binding.disableBatteryOptimizationButton.isVisible = !status.ignoringBatteryOptimizations
+        binding.openAppSettingsButton.isVisible = status.backgroundRestricted || !status.ignoringBatteryOptimizations
+    }
+
+    private fun requestNotificationPermissionIfNeeded() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+            return
+        }
+        if (ContextCompat.checkSelfPermission(
+                this,
+                Manifest.permission.POST_NOTIFICATIONS,
+            ) == PackageManager.PERMISSION_GRANTED
+        ) {
+            return
+        }
+        notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+    }
+}
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyConfig.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyConfig.kt
@ -0,0 +1,156 @@
+package org.flowseal.tgwsproxy
+
+import java.security.SecureRandom
+
+data class ProxyConfig(
+    val host: String = DEFAULT_HOST,
+    val portText: String = DEFAULT_PORT.toString(),
+    val secretText: String = DEFAULT_SECRET,
+    val dcIpText: String = DEFAULT_DC_IP_LINES.joinToString("\n"),
+    val logMaxMbText: String = formatDecimal(DEFAULT_LOG_MAX_MB),
+    val bufferKbText: String = DEFAULT_BUFFER_KB.toString(),
+    val poolSizeText: String = DEFAULT_POOL_SIZE.toString(),
+    val checkUpdates: Boolean = false,
+    val verbose: Boolean = false,
+) {
+    fun validate(): ValidationResult {
+        val hostValue = host.trim()
+        if (!isIpv4Address(hostValue)) {
+            return ValidationResult(errorMessage = "IP-адрес прокси указан некорректно.")
+        }
+
+        val portValue = portText.trim().toIntOrNull()
+            ?: return ValidationResult(errorMessage = "Порт должен быть числом.")
+        if (portValue !in 1..65535) {
+            return ValidationResult(errorMessage = "Порт должен быть в диапазоне 1-65535.")
+        }
+
+        val secretValue = secretText.trim().lowercase()
+        if (secretValue.length != 32 || !secretValue.all { it in "0123456789abcdef" }) {
+            return ValidationResult(
+                errorMessage = "MTProto secret должен содержать ровно 32 hex-символа."
+            )
+        }
+
+        val lines = dcIpText
+            .lineSequence()
+            .map { it.trim() }
+            .filter { it.isNotEmpty() }
+            .toList()
+
+        if (lines.isEmpty()) {
+            return ValidationResult(errorMessage = "Добавьте хотя бы один DC:IP маппинг.")
+        }
+
+        for (line in lines) {
+            val parts = line.split(":", limit = 2)
+            val dcValue = parts.firstOrNull()?.toIntOrNull()
+            val ipValue = parts.getOrNull(1)?.trim().orEmpty()
+            if (parts.size != 2 || dcValue == null || !isIpv4Address(ipValue)) {
+                return ValidationResult(errorMessage = "Строка \"$line\" должна быть в формате DC:IP.")
+            }
+        }
+
+        val logMaxMbValue = logMaxMbText.trim().toDoubleOrNull()
+            ?: return ValidationResult(
+                errorMessage = "Размер лог-файла должен быть числом."
+            )
+        if (logMaxMbValue <= 0.0) {
+            return ValidationResult(
+                errorMessage = "Размер лог-файла должен быть больше нуля."
+            )
+        }
+
+        val bufferKbValue = bufferKbText.trim().toIntOrNull()
+            ?: return ValidationResult(
+                errorMessage = "Буфер сокета должен быть целым числом."
+            )
+        if (bufferKbValue < 4) {
+            return ValidationResult(
+                errorMessage = "Буфер сокета должен быть не меньше 4 KB."
+            )
+        }
+
+        val poolSizeValue = poolSizeText.trim().toIntOrNull()
+            ?: return ValidationResult(
+                errorMessage = "Размер WS pool должен быть целым числом."
+            )
+        if (poolSizeValue < 0) {
+            return ValidationResult(
+                errorMessage = "Размер WS pool не может быть отрицательным."
+            )
+        }
+
+        return ValidationResult(
+            normalized = NormalizedProxyConfig(
+                host = hostValue,
+                port = portValue,
+                secret = secretValue,
+                dcIpList = lines,
+                logMaxMb = logMaxMbValue,
+                bufferKb = bufferKbValue,
+                poolSize = poolSizeValue,
+                checkUpdates = checkUpdates,
+                verbose = verbose,
+            )
+        )
+    }
+
+    companion object {
+        const val DEFAULT_HOST = "127.0.0.1"
+        const val DEFAULT_PORT = 1443
+        const val DEFAULT_LOG_MAX_MB = 5.0
+        const val DEFAULT_BUFFER_KB = 256
+        const val DEFAULT_POOL_SIZE = 4
+        val DEFAULT_SECRET = generateSecret()
+        val DEFAULT_DC_IP_LINES = listOf(
+            "2:149.154.167.220",
+            "4:149.154.167.220",
+        )
+
+        fun formatDecimal(value: Double): String {
+            return if (value % 1.0 == 0.0) {
+                value.toInt().toString()
+            } else {
+                value.toString()
+            }
+        }
+
+        private fun generateSecret(): String {
+            val bytes = ByteArray(16)
+            SecureRandom().nextBytes(bytes)
+            return bytes.joinToString(separator = "") { "%02x".format(it) }
+        }
+
+        private fun isIpv4Address(value: String): Boolean {
+            val octets = value.split(".")
+            if (octets.size != 4) {
+                return false
+            }
+
+            return octets.all { octet ->
+                octet.isNotEmpty() &&
+                    octet.length <= 3 &&
+                    octet.all(Char::isDigit) &&
+                    octet.toIntOrNull() in 0..255
+            }
+        }
+    }
+}
+
+data class ValidationResult(
+    val normalized: NormalizedProxyConfig? = null,
+    val errorMessage: String? = null,
+)
+
+data class NormalizedProxyConfig(
+    val host: String,
+    val port: Int,
+    val secret: String,
+    val dcIpList: List<String>,
+    val logMaxMb: Double,
+    val bufferKb: Int,
+    val poolSize: Int,
+    val checkUpdates: Boolean,
+    val verbose: Boolean,
+)
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyForegroundService.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyForegroundService.kt
@ -0,0 +1,395 @@
+package org.flowseal.tgwsproxy
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.IBinder
+import androidx.core.app.TaskStackBuilder
+import androidx.core.app.NotificationCompat
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import java.util.Locale
+
+class ProxyForegroundService : Service() {
+    private lateinit var settingsStore: ProxySettingsStore
+    private val serviceScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+    private var trafficJob: Job? = null
+    private var lastTrafficSample: TrafficSample? = null
+
+    override fun onCreate() {
+        super.onCreate()
+        settingsStore = ProxySettingsStore(this)
+        createNotificationChannel()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        return when (intent?.action) {
+            ACTION_STOP -> {
+                ProxyServiceState.clearError()
+                serviceScope.launch {
+                    stopProxyRuntime(removeNotification = true, stopService = true)
+                }
+                START_NOT_STICKY
+            }
+
+            ACTION_RESTART -> {
+                val config = loadValidatedConfig() ?: return START_NOT_STICKY
+                ProxyServiceState.clearError()
+                beginProxyStart(config)
+                serviceScope.launch {
+                    stopRuntimeOnly()
+                    startProxyRuntime(config)
+                }
+                START_STICKY
+            }
+
+            else -> {
+                val config = loadValidatedConfig() ?: return START_NOT_STICKY
+                beginProxyStart(config)
+                serviceScope.launch {
+                    startProxyRuntime(config)
+                }
+                START_STICKY
+            }
+        }
+    }
+
+    override fun onDestroy() {
+        stopTrafficUpdates()
+        serviceScope.cancel()
+        runCatching { PythonProxyBridge.stop(this) }
+        ProxyServiceState.markStopped()
+        super.onDestroy()
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    private fun buildNotification(payload: NotificationPayload): Notification {
+        return NotificationCompat.Builder(this, CHANNEL_ID)
+            .setContentTitle(getString(R.string.notification_title))
+            .setContentText(payload.statusText)
+            .setSubText(payload.endpointText)
+            .setStyle(
+                NotificationCompat.BigTextStyle().bigText(payload.detailsText),
+            )
+            .setSmallIcon(R.drawable.ic_proxy_notification)
+            .setContentIntent(createOpenAppPendingIntent())
+            .addAction(
+                0,
+                getString(R.string.notification_action_stop),
+                createStopPendingIntent(),
+            )
+            .setOngoing(true)
+            .setOnlyAlertOnce(true)
+            .build()
+    }
+
+    private suspend fun startProxyRuntime(config: NormalizedProxyConfig) {
+        val result = runCatching {
+            PythonProxyBridge.start(this, config)
+        }
+
+        result.onSuccess {
+            ProxyServiceState.markStarted(config)
+            lastTrafficSample = null
+            updateNotification(
+                buildNotificationPayload(
+                    config = config,
+                    trafficState = TrafficState(running = true),
+                    statusText = getString(
+                        R.string.notification_running,
+                        config.host,
+                        config.port,
+                    ),
+                ),
+            )
+            startTrafficUpdates(config)
+        }.onFailure { error ->
+            ProxyServiceState.markFailed(
+                error.message ?: getString(R.string.proxy_start_failed_generic),
+            )
+            stopTrafficUpdates()
+            stopForeground(STOP_FOREGROUND_REMOVE)
+            stopSelf()
+        }
+    }
+
+    private fun loadValidatedConfig(): NormalizedProxyConfig? {
+        val config = settingsStore.load().validate().normalized
+        if (config == null) {
+            ProxyServiceState.markFailed(getString(R.string.saved_config_invalid))
+            stopForeground(STOP_FOREGROUND_REMOVE)
+            stopSelf()
+        }
+        return config
+    }
+
+    private fun beginProxyStart(config: NormalizedProxyConfig) {
+        ProxyServiceState.markStarting(config)
+        startForeground(
+            NOTIFICATION_ID,
+            buildNotification(
+                buildNotificationPayload(
+                    config = config,
+                    trafficState = TrafficState(),
+                    statusText = getString(
+                        R.string.notification_starting,
+                        config.host,
+                        config.port,
+                    ),
+                ),
+            ),
+        )
+    }
+
+    private fun stopProxyRuntime(removeNotification: Boolean, stopService: Boolean) {
+        stopRuntimeOnly()
+        ProxyServiceState.markStopped()
+
+        if (removeNotification) {
+            stopForeground(STOP_FOREGROUND_REMOVE)
+        }
+        if (stopService) {
+            stopSelf()
+        }
+    }
+
+    private fun stopRuntimeOnly() {
+        stopTrafficUpdates()
+        runCatching { PythonProxyBridge.stop(this) }
+    }
+
+    private fun updateNotification(payload: NotificationPayload) {
+        val manager = getSystemService(NotificationManager::class.java)
+        manager.notify(NOTIFICATION_ID, buildNotification(payload))
+    }
+
+    private fun buildNotificationPayload(
+        config: NormalizedProxyConfig,
+        trafficState: TrafficState,
+        statusText: String,
+    ): NotificationPayload {
+        val endpointText = getString(R.string.notification_endpoint, config.host, config.port)
+        val detailsText = getString(
+            R.string.notification_details,
+            config.dcIpList.size,
+            formatRate(trafficState.upBytesPerSecond),
+            formatRate(trafficState.downBytesPerSecond),
+            formatBytes(trafficState.totalBytesUp),
+            formatBytes(trafficState.totalBytesDown),
+        )
+        return NotificationPayload(
+            statusText = statusText,
+            endpointText = endpointText,
+            detailsText = detailsText,
+        )
+    }
+
+    private fun startTrafficUpdates(config: NormalizedProxyConfig) {
+        stopTrafficUpdates()
+        trafficJob = serviceScope.launch {
+            while (isActive && ProxyServiceState.isRunning.value) {
+                val trafficState = readTrafficState()
+                if (!trafficState.running) {
+                    ProxyServiceState.markFailed(
+                        trafficState.lastError ?: getString(R.string.proxy_runtime_stopped_unexpectedly),
+                    )
+                    stopForeground(STOP_FOREGROUND_REMOVE)
+                    stopSelf()
+                    break
+                }
+                updateNotification(
+                    buildNotificationPayload(
+                        config = config,
+                        trafficState = trafficState,
+                        statusText = getString(
+                            R.string.notification_running,
+                            config.host,
+                            config.port,
+                        ),
+                    ),
+                )
+                delay(1000)
+            }
+        }
+    }
+
+    private fun stopTrafficUpdates() {
+        trafficJob?.cancel()
+        trafficJob = null
+        lastTrafficSample = null
+    }
+
+    private fun readTrafficState(): TrafficState {
+        val nowMillis = System.currentTimeMillis()
+        val current = PythonProxyBridge.getTrafficStats(this)
+        val previous = lastTrafficSample
+        lastTrafficSample = TrafficSample(
+            bytesUp = current.bytesUp,
+            bytesDown = current.bytesDown,
+            timestampMillis = nowMillis,
+        )
+
+        if (!current.running || previous == null) {
+            return TrafficState(
+                upBytesPerSecond = 0L,
+                downBytesPerSecond = 0L,
+                totalBytesUp = current.bytesUp,
+                totalBytesDown = current.bytesDown,
+                running = current.running,
+                lastError = current.lastError,
+            )
+        }
+
+        val elapsedMillis = (nowMillis - previous.timestampMillis).coerceAtLeast(1L)
+        val upDelta = (current.bytesUp - previous.bytesUp).coerceAtLeast(0L)
+        val downDelta = (current.bytesDown - previous.bytesDown).coerceAtLeast(0L)
+        return TrafficState(
+            upBytesPerSecond = (upDelta * 1000L) / elapsedMillis,
+            downBytesPerSecond = (downDelta * 1000L) / elapsedMillis,
+            totalBytesUp = current.bytesUp,
+            totalBytesDown = current.bytesDown,
+            running = current.running,
+            lastError = current.lastError,
+        )
+    }
+
+    private fun formatRate(bytesPerSecond: Long): String = formatBytes(bytesPerSecond)
+
+    private fun formatBytes(bytes: Long): String {
+        val units = arrayOf("B", "KB", "MB", "GB")
+        var value = bytes.toDouble().coerceAtLeast(0.0)
+        var unitIndex = 0
+
+        while (value >= 1024.0 && unitIndex < units.lastIndex) {
+            value /= 1024.0
+            unitIndex += 1
+        }
+
+        return if (unitIndex == 0) {
+            String.format(Locale.US, "%.0f %s", value, units[unitIndex])
+        } else {
+            String.format(Locale.US, "%.1f %s", value, units[unitIndex])
+        }
+    }
+
+    private fun createOpenAppPendingIntent(): PendingIntent {
+        val launchIntent = packageManager.getLaunchIntentForPackage(packageName)
+            ?.apply {
+                addFlags(
+                    Intent.FLAG_ACTIVITY_NEW_TASK or
+                        Intent.FLAG_ACTIVITY_CLEAR_TOP or
+                        Intent.FLAG_ACTIVITY_SINGLE_TOP,
+                )
+            }
+            ?: Intent(this, MainActivity::class.java).apply {
+                addFlags(
+                    Intent.FLAG_ACTIVITY_NEW_TASK or
+                        Intent.FLAG_ACTIVITY_CLEAR_TOP or
+                        Intent.FLAG_ACTIVITY_SINGLE_TOP,
+                )
+            }
+
+        return TaskStackBuilder.create(this)
+            .addNextIntentWithParentStack(launchIntent)
+            .getPendingIntent(
+                1,
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+            )
+            ?: PendingIntent.getActivity(
+                this,
+                1,
+                launchIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+            )
+    }
+
+    private fun createStopPendingIntent(): PendingIntent {
+        val intent = Intent(this, ProxyForegroundService::class.java).apply {
+            action = ACTION_STOP
+        }
+        return PendingIntent.getService(
+            this,
+            2,
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+        )
+    }
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            return
+        }
+
+        val manager = getSystemService(NotificationManager::class.java)
+        val channel = NotificationChannel(
+            CHANNEL_ID,
+            getString(R.string.notification_channel_name),
+            NotificationManager.IMPORTANCE_LOW,
+        ).apply {
+            description = getString(R.string.notification_channel_description)
+        }
+        manager.createNotificationChannel(channel)
+    }
+
+    companion object {
+        private const val CHANNEL_ID = "proxy_service"
+        private const val NOTIFICATION_ID = 1001
+        private const val ACTION_START = "org.flowseal.tgwsproxy.action.START"
+        private const val ACTION_STOP = "org.flowseal.tgwsproxy.action.STOP"
+        private const val ACTION_RESTART = "org.flowseal.tgwsproxy.action.RESTART"
+
+        fun start(context: Context) {
+            val intent = Intent(context, ProxyForegroundService::class.java).apply {
+                action = ACTION_START
+            }
+            androidx.core.content.ContextCompat.startForegroundService(context, intent)
+        }
+
+        fun stop(context: Context) {
+            val intent = Intent(context, ProxyForegroundService::class.java).apply {
+                action = ACTION_STOP
+            }
+            context.startService(intent)
+        }
+
+        fun restart(context: Context) {
+            val intent = Intent(context, ProxyForegroundService::class.java).apply {
+                action = ACTION_RESTART
+            }
+            androidx.core.content.ContextCompat.startForegroundService(context, intent)
+        }
+    }
+}
+
+private data class NotificationPayload(
+    val statusText: String,
+    val endpointText: String,
+    val detailsText: String,
+)
+
+private data class TrafficSample(
+    val bytesUp: Long,
+    val bytesDown: Long,
+    val timestampMillis: Long,
+)
+
+private data class TrafficState(
+    val upBytesPerSecond: Long = 0L,
+    val downBytesPerSecond: Long = 0L,
+    val totalBytesUp: Long = 0L,
+    val totalBytesDown: Long = 0L,
+    val running: Boolean = false,
+    val lastError: String? = null,
+)
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyServiceState.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/ProxyServiceState.kt
@ -0,0 +1,49 @@
+package org.flowseal.tgwsproxy
+
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+
+object ProxyServiceState {
+    private val _isRunning = MutableStateFlow(false)
+    val isRunning: StateFlow<Boolean> = _isRunning
+
+    private val _isStarting = MutableStateFlow(false)
+    val isStarting: StateFlow<Boolean> = _isStarting
+
+    private val _activeConfig = MutableStateFlow<NormalizedProxyConfig?>(null)
+    val activeConfig: StateFlow<NormalizedProxyConfig?> = _activeConfig
+
+    private val _lastError = MutableStateFlow<String?>(null)
+    val lastError: StateFlow<String?> = _lastError
+
+    fun markStarting(config: NormalizedProxyConfig) {
+        _activeConfig.value = config
+        _isStarting.value = true
+        _isRunning.value = false
+        _lastError.value = null
+    }
+
+    fun markStarted(config: NormalizedProxyConfig) {
+        _activeConfig.value = config
+        _isStarting.value = false
+        _isRunning.value = true
+        _lastError.value = null
+    }
+
+    fun markFailed(message: String) {
+        _activeConfig.value = null
+        _isStarting.value = false
+        _isRunning.value = false
+        _lastError.value = message
+    }
+
+    fun markStopped() {
+        _activeConfig.value = null
+        _isStarting.value = false
+        _isRunning.value = false
+    }
+
+    fun clearError() {
+        _lastError.value = null
+    }
+}
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/ProxySettingsStore.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/ProxySettingsStore.kt
@ -0,0 +1,62 @@
+package org.flowseal.tgwsproxy
+
+import android.content.Context
+
+class ProxySettingsStore(context: Context) {
+    private val preferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+
+    fun load(): ProxyConfig {
+        return ProxyConfig(
+            host = preferences.getString(KEY_HOST, ProxyConfig.DEFAULT_HOST).orEmpty(),
+            portText = preferences.getInt(KEY_PORT, ProxyConfig.DEFAULT_PORT).toString(),
+            secretText = preferences.getString(KEY_SECRET, ProxyConfig.DEFAULT_SECRET).orEmpty(),
+            dcIpText = preferences.getString(
+                KEY_DC_IP_TEXT,
+                ProxyConfig.DEFAULT_DC_IP_LINES.joinToString("\n"),
+            ).orEmpty(),
+            logMaxMbText = ProxyConfig.formatDecimal(
+                preferences.getFloat(
+                    KEY_LOG_MAX_MB,
+                    ProxyConfig.DEFAULT_LOG_MAX_MB.toFloat(),
+                ).toDouble()
+            ),
+            bufferKbText = preferences.getInt(
+                KEY_BUFFER_KB,
+                ProxyConfig.DEFAULT_BUFFER_KB,
+            ).toString(),
+            poolSizeText = preferences.getInt(
+                KEY_POOL_SIZE,
+                ProxyConfig.DEFAULT_POOL_SIZE,
+            ).toString(),
+            checkUpdates = preferences.getBoolean(KEY_CHECK_UPDATES, false),
+            verbose = preferences.getBoolean(KEY_VERBOSE, false),
+        )
+    }
+
+    fun save(config: NormalizedProxyConfig) {
+        preferences.edit()
+            .putString(KEY_HOST, config.host)
+            .putInt(KEY_PORT, config.port)
+            .putString(KEY_SECRET, config.secret)
+            .putString(KEY_DC_IP_TEXT, config.dcIpList.joinToString("\n"))
+            .putFloat(KEY_LOG_MAX_MB, config.logMaxMb.toFloat())
+            .putInt(KEY_BUFFER_KB, config.bufferKb)
+            .putInt(KEY_POOL_SIZE, config.poolSize)
+            .putBoolean(KEY_CHECK_UPDATES, config.checkUpdates)
+            .putBoolean(KEY_VERBOSE, config.verbose)
+            .apply()
+    }
+
+    companion object {
+        private const val PREFS_NAME = "proxy_settings"
+        private const val KEY_HOST = "host"
+        private const val KEY_PORT = "port"
+        private const val KEY_SECRET = "secret"
+        private const val KEY_DC_IP_TEXT = "dc_ip_text"
+        private const val KEY_LOG_MAX_MB = "log_max_mb"
+        private const val KEY_BUFFER_KB = "buf_kb"
+        private const val KEY_POOL_SIZE = "pool_size"
+        private const val KEY_CHECK_UPDATES = "check_updates"
+        private const val KEY_VERBOSE = "verbose"
+    }
+}
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/PythonProxyBridge.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/PythonProxyBridge.kt
@ -0,0 +1,102 @@
+package org.flowseal.tgwsproxy
+
+import android.content.Context
+import com.chaquo.python.Python
+import com.chaquo.python.android.AndroidPlatform
+import java.io.File
+import org.json.JSONObject
+
+object PythonProxyBridge {
+    private const val MODULE_NAME = "android_proxy_bridge"
+    private val pythonStartLock = Any()
+
+    fun start(context: Context, config: NormalizedProxyConfig): String {
+        val module = getModule(context)
+        return module.callAttr(
+            "start_proxy",
+            File(context.filesDir, "tg-ws-proxy").absolutePath,
+            config.host,
+            config.port,
+            config.secret,
+            config.dcIpList,
+            config.logMaxMb,
+            config.bufferKb,
+            config.poolSize,
+            config.verbose,
+        ).toString()
+    }
+
+    fun stop(context: Context) {
+        if (!Python.isStarted()) {
+            return
+        }
+        getModule(context).callAttr("stop_proxy")
+    }
+
+    fun getTrafficStats(context: Context): ProxyTrafficStats {
+        if (!Python.isStarted()) {
+            return ProxyTrafficStats()
+        }
+
+        val payload = getModule(context).callAttr("get_runtime_stats_json").toString()
+        val json = JSONObject(payload)
+        return ProxyTrafficStats(
+            bytesUp = json.optLong("bytes_up", 0L),
+            bytesDown = json.optLong("bytes_down", 0L),
+            running = json.optBoolean("running", false),
+            lastError = json.optString("last_error").ifBlank { null },
+        )
+    }
+
+    fun getUpdateStatus(context: Context, checkNow: Boolean = false): ProxyUpdateStatus {
+        val payload = getModule(context).callAttr("get_update_status_json", checkNow).toString()
+        val json = JSONObject(payload)
+        return ProxyUpdateStatus(
+            currentVersion = json.optString("current_version").ifBlank { "unknown" },
+            latestVersion = json.optString("latest").ifBlank { null },
+            hasUpdate = json.optBoolean("has_update", false),
+            aheadOfRelease = json.optBoolean("ahead_of_release", false),
+            checked = json.optBoolean("checked", false),
+            htmlUrl = json.optString("html_url").ifBlank { null },
+            error = json.optString("error").ifBlank { null },
+        )
+    }
+
+    private fun getModule(context: Context) =
+        getPython(context.applicationContext).getModule(MODULE_NAME)
+
+    private fun getPython(context: Context): Python {
+        if (Python.isStarted()) {
+            return Python.getInstance()
+        }
+        synchronized(pythonStartLock) {
+            if (!Python.isStarted()) {
+                try {
+                    Python.start(AndroidPlatform(context))
+                } catch (exc: IllegalStateException) {
+                    if (!Python.isStarted()) {
+                        throw exc
+                    }
+                }
+            }
+        }
+        return Python.getInstance()
+    }
+}
+
+data class ProxyTrafficStats(
+    val bytesUp: Long = 0L,
+    val bytesDown: Long = 0L,
+    val running: Boolean = false,
+    val lastError: String? = null,
+)
+
+data class ProxyUpdateStatus(
+    val currentVersion: String = "unknown",
+    val latestVersion: String? = null,
+    val hasUpdate: Boolean = false,
+    val aheadOfRelease: Boolean = false,
+    val checked: Boolean = false,
+    val htmlUrl: String? = null,
+    val error: String? = null,
+)
--- a/android/app/src/main/java/org/flowseal/tgwsproxy/TelegramProxyIntent.kt
+++ b/android/app/src/main/java/org/flowseal/tgwsproxy/TelegramProxyIntent.kt
@ -0,0 +1,23 @@
+package org.flowseal.tgwsproxy
+
+import android.content.ActivityNotFoundException
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+
+object TelegramProxyIntent {
+    fun open(context: Context, config: NormalizedProxyConfig): Boolean {
+        val uri = Uri.parse(
+            "tg://proxy?server=${Uri.encode(config.host)}&port=${config.port}&secret=dd${Uri.encode(config.secret)}"
+        )
+        val intent = Intent(Intent.ACTION_VIEW, uri)
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+
+        return try {
+            context.startActivity(intent)
+            true
+        } catch (_: ActivityNotFoundException) {
+            false
+        }
+    }
+}
--- a/android/app/src/main/python/android_proxy_bridge.py
+++ b/android/app/src/main/python/android_proxy_bridge.py
@ -0,0 +1,161 @@
+import os
+import threading
+import time
+import json
+from pathlib import Path
+from typing import Iterable, Optional
+
+from proxy.app_runtime import ProxyAppRuntime
+from proxy import __version__
+import proxy.tg_ws_proxy as tg_ws_proxy
+
+
+RELEASES_PAGE_URL = "https://github.com/Flowseal/tg-ws-proxy/releases/latest"
+
+
+_RUNTIME_LOCK = threading.RLock()
+_RUNTIME: Optional[ProxyAppRuntime] = None
+_LAST_ERROR: Optional[str] = None
+
+
+def _remember_error(message: str) -> None:
+    global _LAST_ERROR
+    _LAST_ERROR = message
+
+
+def _normalize_dc_ip_list(dc_ip_list: Iterable[object]) -> list[str]:
+    if dc_ip_list is None:
+        return []
+
+    values: list[object]
+    try:
+        values = list(dc_ip_list)
+    except TypeError:
+        # Chaquopy may expose Kotlin's List<String> as java.util.ArrayList,
+        # which isn't always directly iterable from Python.
+        if hasattr(dc_ip_list, "toArray"):
+            values = list(dc_ip_list.toArray())
+        elif hasattr(dc_ip_list, "size") and hasattr(dc_ip_list, "get"):
+            size = int(dc_ip_list.size())
+            values = [dc_ip_list.get(i) for i in range(size)]
+        else:
+            values = [dc_ip_list]
+
+    return [str(item).strip() for item in values if str(item).strip()]
+
+
+def start_proxy(app_dir: str, host: str, port: int, secret: str,
+                dc_ip_list: Iterable[object], log_max_mb: float = 5.0,
+                buf_kb: int = 256, pool_size: int = 4,
+                verbose: bool = False) -> str:
+    global _RUNTIME, _LAST_ERROR
+
+    with _RUNTIME_LOCK:
+        if _RUNTIME is not None:
+            _RUNTIME.stop_proxy()
+            _RUNTIME = None
+
+        _LAST_ERROR = None
+        os.environ["TG_WS_PROXY_CRYPTO_BACKEND"] = "python"
+        tg_ws_proxy.reset_stats()
+
+        runtime = ProxyAppRuntime(
+            Path(app_dir),
+            logger_name="tg-ws-android",
+            on_error=_remember_error,
+        )
+        runtime.reset_log_file()
+        runtime.setup_logging(verbose=verbose, log_max_mb=float(log_max_mb))
+
+        config = {
+            "host": host,
+            "port": int(port),
+            "secret": str(secret).strip(),
+            "dc_ip": _normalize_dc_ip_list(dc_ip_list),
+            "log_max_mb": float(log_max_mb),
+            "buf_kb": int(buf_kb),
+            "pool_size": int(pool_size),
+            "verbose": bool(verbose),
+        }
+        runtime.save_config(config)
+
+        if not runtime.start_proxy(config):
+            _RUNTIME = None
+            raise RuntimeError(_LAST_ERROR or "Failed to start proxy runtime.")
+
+        _RUNTIME = runtime
+
+    # Give the proxy thread a short warm-up window so immediate bind failures
+    # surface before Kotlin reports the service as running.
+    for _ in range(10):
+        time.sleep(0.1)
+        with _RUNTIME_LOCK:
+            if _LAST_ERROR:
+                runtime.stop_proxy()
+                _RUNTIME = None
+                raise RuntimeError(_LAST_ERROR)
+            if runtime.is_proxy_running():
+                return str(runtime.log_file)
+
+    with _RUNTIME_LOCK:
+        runtime.stop_proxy()
+        _RUNTIME = None
+    raise RuntimeError("Proxy runtime did not become ready in time.")
+
+
+def stop_proxy() -> None:
+    global _RUNTIME, _LAST_ERROR
+
+    with _RUNTIME_LOCK:
+        _LAST_ERROR = None
+        if _RUNTIME is not None:
+            _RUNTIME.stop_proxy()
+            _RUNTIME = None
+
+
+def is_running() -> bool:
+    with _RUNTIME_LOCK:
+        return bool(_RUNTIME and _RUNTIME.is_proxy_running())
+
+
+def get_last_error() -> Optional[str]:
+    return _LAST_ERROR
+
+
+def get_runtime_stats_json() -> str:
+    with _RUNTIME_LOCK:
+        running = bool(_RUNTIME and _RUNTIME.is_proxy_running())
+
+    payload = dict(tg_ws_proxy.get_stats_snapshot())
+    payload["running"] = running
+    payload["last_error"] = _LAST_ERROR
+    return json.dumps(payload)
+
+
+def _load_update_check():
+    from utils import update_check
+    return update_check
+
+
+def get_update_status_json(check_now: bool = False) -> str:
+    payload = {
+        "current_version": __version__,
+        "latest": "",
+        "has_update": False,
+        "ahead_of_release": False,
+        "checked": False,
+        "html_url": RELEASES_PAGE_URL,
+        "error": "",
+    }
+    try:
+        update_check = _load_update_check()
+        if check_now:
+            update_check.run_check(__version__)
+        payload.update(update_check.get_status())
+        payload["current_version"] = __version__
+        payload["latest"] = payload.get("latest") or ""
+        payload["html_url"] = payload.get("html_url") or update_check.RELEASES_PAGE_URL
+        payload["error"] = payload.get("error") or ""
+    except Exception as exc:
+        payload["error"] = str(exc)
+    return json.dumps(payload)
--- a/android/app/src/main/res/drawable/ic_proxy_app.xml
+++ b/android/app/src/main/res/drawable/ic_proxy_app.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#1E88E5"
+        android:pathData="M54,10A44,44 0 1,1 10,54A44,44 0 0,1 54,10Z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M33,34h42v10H59v30H49V44H33z" />
+</vector>
--- a/android/app/src/main/res/drawable/ic_proxy_notification.xml
+++ b/android/app/src/main/res/drawable/ic_proxy_notification.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M5,4h14v3h-5v12h-4V7H5z" />
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M8,20h8v2H8z" />
+</vector>
--- a/android/app/src/main/res/layout/activity_log_viewer.xml
+++ b/android/app/src/main/res/layout/activity_log_viewer.xml
@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="20dp">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/logs_title"
+            android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+            android:textStyle="bold" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/logs_subtitle"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/logs_path_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <TextView
+                    android:id="@+id/logPathValue"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:textAppearance="@style/TextAppearance.Material3.BodySmall" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:id="@+id/logContentValue"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="monospace"
+                    android:textAppearance="@style/TextAppearance.Material3.BodySmall"
+                    android:textIsSelectable="true" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/refreshLogsButton"
+            style="@style/Widget.Material3.Button.OutlinedButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:text="@string/refresh_logs_button" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/closeLogsButton"
+            style="@style/Widget.Material3.Button.OutlinedButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:text="@string/close_logs_button" />
+
+    </LinearLayout>
+</ScrollView>
--- a/android/app/src/main/res/layout/activity_main.xml
+++ b/android/app/src/main/res/layout/activity_main.xml
@ -0,0 +1,424 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="20dp">
+
+        <TextView
+            android:id="@+id/titleText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/app_name"
+            android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/subtitleText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/subtitle"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/status_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <TextView
+                    android:id="@+id/statusValue"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:text="@string/status_stopped"
+                    android:textAppearance="@style/TextAppearance.Material3.TitleMedium"
+                    android:textStyle="bold" />
+
+                <TextView
+                    android:id="@+id/serviceHint"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="10dp"
+                    android:text="@string/service_hint_idle"
+                    android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:id="@+id/lastErrorCard"
+            android:visibility="gone"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/last_error_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+                    android:textColor="?attr/colorError" />
+
+                <TextView
+                    android:id="@+id/lastErrorValue"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+                    android:textColor="?attr/colorError" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/updates_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <TextView
+                    android:id="@+id/currentVersionValue"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:textAppearance="@style/TextAppearance.Material3.BodySmall" />
+
+                <com.google.android.material.materialswitch.MaterialSwitch
+                    android:id="@+id/checkUpdatesSwitch"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:text="@string/updates_check_label" />
+
+                <TextView
+                    android:id="@+id/updateStatusValue"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="8dp"
+                    android:text="@string/updates_status_initial"
+                    android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/openReleasePageButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:text="@string/updates_open_release_button" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/system_status_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <TextView
+                    android:id="@+id/systemStatusValue"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:text="@string/system_status_attention"
+                    android:textAppearance="@style/TextAppearance.Material3.TitleMedium"
+                    android:textStyle="bold" />
+
+                <TextView
+                    android:id="@+id/systemStatusHint"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="10dp"
+                    android:textAppearance="@style/TextAppearance.Material3.BodyMedium" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/disableBatteryOptimizationButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:text="@string/disable_battery_optimization_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/openAppSettingsButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/open_app_settings_button" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/endpoint_section_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:hint="@string/host_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/hostInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="text"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/port_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/portInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="number"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/secret_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/secretInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="textNoSuggestions"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/dc_ip_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/dcIpInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="140dp"
+                        android:gravity="top|start"
+                        android:inputType="textMultiLine"
+                        android:minLines="5" />
+                </com.google.android.material.textfield.TextInputLayout>
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/advanced_section_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <com.google.android.material.materialswitch.MaterialSwitch
+                    android:id="@+id/verboseSwitch"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:text="@string/verbose_label" />
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/log_max_mb_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/logMaxMbInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="numberDecimal"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/buffer_kb_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/bufferKbInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="number"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+
+                <com.google.android.material.textfield.TextInputLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:hint="@string/pool_size_hint">
+
+                    <com.google.android.material.textfield.TextInputEditText
+                        android:id="@+id/poolSizeInput"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:inputType="number"
+                        android:maxLines="1" />
+                </com.google.android.material.textfield.TextInputLayout>
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+        <TextView
+            android:id="@+id/errorText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+            android:textColor="?attr/colorError"
+            android:visibility="gone" />
+
+        <com.google.android.material.card.MaterialCardView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            app:cardCornerRadius="20dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:padding="18dp">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/actions_section_label"
+                    android:textAppearance="@style/TextAppearance.Material3.LabelLarge" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/saveButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="14dp"
+                    android:text="@string/save_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/startButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/start_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/stopButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:enabled="false"
+                    android:text="@string/stop_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/restartButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/restart_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/openTelegramButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/open_telegram_button" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/openLogsButton"
+                    style="@style/Widget.Material3.Button.OutlinedButton"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/open_logs_button" />
+            </LinearLayout>
+        </com.google.android.material.card.MaterialCardView>
+
+    </LinearLayout>
+</ScrollView>
--- a/android/app/src/main/res/values/colors.xml
+++ b/android/app/src/main/res/values/colors.xml
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="proxy_blue">#1E88E5</color>
+    <color name="proxy_navy">#0B1F33</color>
+    <color name="proxy_surface">#F4F8FC</color>
+    <color name="proxy_white">#FFFFFF</color>
+</resources>
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">TG WS Proxy</string>
+    <string name="subtitle">Android app for the local Telegram MTProto proxy.</string>
+    <string name="status_label">Foreground service</string>
+    <string name="status_starting">Starting</string>
+    <string name="status_running">Running</string>
+    <string name="status_stopped">Stopped</string>
+    <string name="service_hint_idle">Configure the proxy settings, then start the foreground service.</string>
+    <string name="service_hint_starting">Starting embedded Python proxy for %1$s:%2$d.</string>
+    <string name="service_hint_running">Foreground service active for %1$s:%2$d.</string>
+    <string name="system_status_label">Android background limits</string>
+    <string name="system_status_ready">Ready</string>
+    <string name="system_status_attention">Needs attention</string>
+    <string name="system_check_battery_ignored">Battery optimization: disabled for this app.</string>
+    <string name="system_check_battery_active">Battery optimization: still enabled, Android may stop the proxy in background.</string>
+    <string name="system_check_background_ok">Background restriction: not detected.</string>
+    <string name="system_check_background_restricted">Background restriction: enabled, Android may block long-running work.</string>
+    <string name="system_check_oem_note">Some phones also require manual vendor settings such as Autostart, Lock in recents, or Unrestricted battery mode.</string>
+    <string name="endpoint_section_label">Proxy endpoint</string>
+    <string name="advanced_section_label">Advanced</string>
+    <string name="actions_section_label">Actions</string>
+    <string name="updates_label">Updates</string>
+    <string name="updates_current_version_format">v%1$s</string>
+    <string name="updates_check_label">Check for updates on launch</string>
+    <string name="updates_status_initial">Checking GitHub release…</string>
+    <string name="updates_status_idle">Not checked yet</string>
+    <string name="updates_status_disabled">Automatic update checks are disabled.</string>
+    <string name="updates_status_latest">Installed version %1$s matches the latest GitHub release.</string>
+    <string name="updates_status_newer">Installed version %1$s is newer than the latest GitHub release.</string>
+    <string name="updates_status_available">Version %1$s is available on GitHub (installed: %2$s).</string>
+    <string name="updates_status_error">Update check failed: %1$s</string>
+    <string name="updates_open_release_button">Open Release Page</string>
+    <string name="host_hint">Proxy host</string>
+    <string name="port_hint">Proxy port</string>
+    <string name="secret_hint">MTProto secret (32 hex characters)</string>
+    <string name="dc_ip_hint">DC to IP mappings (one DC:IP per line)</string>
+    <string name="log_max_mb_hint">Max log size before rotation (MB)</string>
+    <string name="buffer_kb_hint">Socket buffer size (KB)</string>
+    <string name="pool_size_hint">WS pool size per DC</string>
+    <string name="verbose_label">Verbose logging</string>
+    <string name="save_button">Save Settings</string>
+    <string name="start_button">Start Service</string>
+    <string name="stop_button">Stop Service</string>
+    <string name="restart_button">Restart Proxy</string>
+    <string name="open_telegram_button">Open in Telegram</string>
+    <string name="open_logs_button">Open Logs</string>
+    <string name="disable_battery_optimization_button">Disable Battery Optimization</string>
+    <string name="open_app_settings_button">Open App Settings</string>
+    <string name="last_error_label">Last service error</string>
+    <string name="release_page_open_failed">Failed to open release page.</string>
+    <string name="settings_saved">Settings saved</string>
+    <string name="service_start_requested">Foreground service start requested</string>
+    <string name="service_restart_requested">Foreground service restart requested</string>
+    <string name="telegram_not_found">Telegram app was not found for tg://proxy.</string>
+    <string name="notification_title">TG WS Proxy</string>
+    <string name="notification_channel_name">Proxy service</string>
+    <string name="notification_channel_description">Keeps the Telegram proxy service alive in the foreground.</string>
+    <string name="notification_starting">MTProto %1$s:%2$d • starting embedded Python</string>
+    <string name="notification_running">MTProto %1$s:%2$d • proxy active</string>
+    <string name="notification_endpoint">%1$s:%2$d</string>
+    <string name="notification_details">DC mappings: %1$d\nTraffic: ↑ %2$s/s ↓ %3$s/s\nTransferred: ↑ %4$s ↓ %5$s</string>
+    <string name="notification_action_stop">Stop</string>
+    <string name="saved_config_invalid">Saved proxy settings are invalid.</string>
+    <string name="proxy_start_failed_generic">Failed to start embedded Python proxy.</string>
+    <string name="proxy_runtime_stopped_unexpectedly">Proxy runtime stopped unexpectedly.</string>
+    <string name="logs_title">Proxy Logs</string>
+    <string name="logs_subtitle">Shows the latest lines from the embedded Python proxy log.</string>
+    <string name="logs_path_label">Log file</string>
+    <string name="refresh_logs_button">Refresh Logs</string>
+    <string name="close_logs_button">Close</string>
+    <string name="logs_empty">The log file is empty or has not been created yet.</string>
+    <string name="logs_read_failed">Failed to read log file: %1$s</string>
+    <string name="logs_truncated_prefix">Showing the last part of the log file.</string>
+</resources>
--- a/android/app/src/main/res/values/themes.xml
+++ b/android/app/src/main/res/values/themes.xml
@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <style name="Theme.TgWsProxy" parent="Theme.Material3.Light.NoActionBar">
+        <item name="colorPrimary">@color/proxy_blue</item>
+        <item name="colorSecondary">@color/proxy_navy</item>
+        <item name="android:statusBarColor">@color/proxy_navy</item>
+        <item name="android:navigationBarColor">@color/proxy_white</item>
+        <item name="colorSurface">@color/proxy_surface</item>
+        <item name="android:windowLightStatusBar" tools:targetApi="m">false</item>
+    </style>
+</resources>
--- a/android/build-local-debug.sh
+++ b/android/build-local-debug.sh
@ -0,0 +1,190 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+APP_BUILD_DIR="$ROOT_DIR/app/build"
+
+if [[ -z "${GRADLE_USER_HOME:-}" ]]; then
+  if [[ -d "$HOME/.gradle" && -w "$HOME/.gradle" ]]; then
+    export GRADLE_USER_HOME="$HOME/.gradle"
+  else
+    export GRADLE_USER_HOME="$ROOT_DIR/.gradle-local"
+  fi
+fi
+
+mkdir -p "$GRADLE_USER_HOME"
+
+if [[ -d "$HOME/.local/jdk" ]]; then
+  export JAVA_HOME="$HOME/.local/jdk"
+fi
+
+if [[ -d "$HOME/android-sdk" ]]; then
+  export ANDROID_SDK_ROOT="$HOME/android-sdk"
+fi
+
+if [[ -n "${JAVA_HOME:-}" ]]; then
+  export PATH="$JAVA_HOME/bin:$PATH"
+fi
+
+if [[ -n "${ANDROID_SDK_ROOT:-}" ]]; then
+  export PATH="$ANDROID_SDK_ROOT/cmdline-tools/latest/bin:$ANDROID_SDK_ROOT/platform-tools:$PATH"
+fi
+
+if [[ -d "$HOME/.local/gradle/gradle-8.7/bin" ]]; then
+  export PATH="$HOME/.local/gradle/gradle-8.7/bin:$PATH"
+fi
+
+unset HTTP_PROXY HTTPS_PROXY ALL_PROXY http_proxy https_proxy all_proxy
+
+GRADLE_BIN="gradle"
+if [[ -x "$ROOT_DIR/gradlew" ]]; then
+  GRADLE_BIN="$ROOT_DIR/gradlew"
+fi
+GRADLE_RUN_DIR="$ROOT_DIR"
+
+ATTEMPTS="${ATTEMPTS:-5}"
+SLEEP_SECONDS="${SLEEP_SECONDS:-15}"
+TASK="${1:-assembleStandardDebug}"
+LOCAL_CHAQUOPY_REPO="${LOCAL_CHAQUOPY_REPO:-$ROOT_DIR/.m2-chaquopy}"
+CHAQUOPY_MAVEN_BASE="${CHAQUOPY_MAVEN_BASE:-https://repo.maven.apache.org/maven2}"
+
+running_on_wsl_windows_mount() {
+  [[ -n "${WSL_DISTRO_NAME:-}" && "$ROOT_DIR" == /mnt/* ]]
+}
+
+prepare_wsl_build_dir() {
+  if ! running_on_wsl_windows_mount; then
+    return 0
+  fi
+
+  local cache_root="${XDG_CACHE_HOME:-$HOME/.cache}/tg-ws-proxy-android-build"
+  local project_key
+  project_key="$(printf '%s' "$ROOT_DIR" | sha256sum | cut -d' ' -f1)"
+  local linux_build_dir="$cache_root/$project_key/app-build"
+
+  mkdir -p "$cache_root"
+  mkdir -p "$linux_build_dir"
+
+  if [[ -L "$APP_BUILD_DIR" ]]; then
+    return 0
+  fi
+
+  if [[ -e "$APP_BUILD_DIR" ]]; then
+    rm -rf "$APP_BUILD_DIR"
+  fi
+
+  ln -s "$linux_build_dir" "$APP_BUILD_DIR"
+}
+
+task_uses_legacy32() {
+  [[ "$TASK" =~ [Ll]egacy32 ]]
+}
+
+task_uses_standard() {
+  if [[ "$TASK" =~ [Ss]tandard ]]; then
+    return 0
+  fi
+
+  if task_uses_legacy32; then
+    return 1
+  fi
+
+  return 0
+}
+
+prefetch_artifact() {
+  local relative_path="$1"
+  local destination="$LOCAL_CHAQUOPY_REPO/$relative_path"
+
+  if [[ -f "$destination" ]]; then
+    return 0
+  fi
+
+  mkdir -p "$(dirname "$destination")"
+  echo "Prefetching $relative_path"
+  curl \
+    --fail \
+    --location \
+    --retry 8 \
+    --retry-all-errors \
+    --continue-at - \
+    --connect-timeout 15 \
+    --speed-limit 1024 \
+    --speed-time 20 \
+    --max-time 90 \
+    --output "$destination" \
+    "$CHAQUOPY_MAVEN_BASE/$relative_path"
+}
+
+prefetch_chaquopy_runtime() {
+  local artifacts=(
+    "com/chaquo/python/runtime/chaquopy_java/17.0.0/chaquopy_java-17.0.0.pom"
+    "com/chaquo/python/runtime/chaquopy_java/17.0.0/chaquopy_java-17.0.0.jar"
+    "com/chaquo/python/runtime/libchaquopy_java/17.0.0/libchaquopy_java-17.0.0.pom"
+  )
+
+  if task_uses_standard; then
+    artifacts+=(
+      "com/chaquo/python/runtime/libchaquopy_java/17.0.0/libchaquopy_java-17.0.0-3.12-arm64-v8a.so"
+      "com/chaquo/python/runtime/libchaquopy_java/17.0.0/libchaquopy_java-17.0.0-3.12-x86_64.so"
+      "com/chaquo/python/target/3.12.12-0/target-3.12.12-0.pom"
+      "com/chaquo/python/target/3.12.12-0/target-3.12.12-0-arm64-v8a.zip"
+      "com/chaquo/python/target/3.12.12-0/target-3.12.12-0-stdlib-pyc.zip"
+      "com/chaquo/python/target/3.12.12-0/target-3.12.12-0-stdlib.zip"
+      "com/chaquo/python/target/3.12.12-0/target-3.12.12-0-x86_64.zip"
+    )
+  fi
+
+  if task_uses_legacy32; then
+    artifacts+=(
+      "com/chaquo/python/runtime/libchaquopy_java/17.0.0/libchaquopy_java-17.0.0-3.11-armeabi-v7a.so"
+      "com/chaquo/python/target/3.11.10-0/target-3.11.10-0.pom"
+      "com/chaquo/python/target/3.11.10-0/target-3.11.10-0-armeabi-v7a.zip"
+      "com/chaquo/python/target/3.11.10-0/target-3.11.10-0-stdlib-pyc.zip"
+      "com/chaquo/python/target/3.11.10-0/target-3.11.10-0-stdlib.zip"
+    )
+  fi
+
+  for artifact in "${artifacts[@]}"; do
+    prefetch_artifact "$artifact"
+  done
+}
+
+cleanup_stale_build_state() {
+  local stale_dirs=(
+    "$APP_BUILD_DIR/python/env"
+    "$APP_BUILD_DIR/intermediates/project_dex_archive"
+    "$APP_BUILD_DIR/intermediates/desugar_graph"
+    "$APP_BUILD_DIR/tmp/kotlin-classes"
+    "$APP_BUILD_DIR/snapshot/kotlin"
+  )
+
+  for stale_dir in "${stale_dirs[@]}"; do
+    if [[ -d "$stale_dir" ]]; then
+      rm -rf "$stale_dir"
+    fi
+  done
+}
+
+prefetch_chaquopy_runtime
+prepare_wsl_build_dir
+
+for attempt in $(seq 1 "$ATTEMPTS"); do
+  echo "==> Android build attempt $attempt/$ATTEMPTS ($TASK)"
+  if (
+    cd "$GRADLE_RUN_DIR"
+    "$GRADLE_BIN" --no-daemon --console=plain "$TASK"
+  ); then
+    exit 0
+  fi
+
+  if [[ "$attempt" -lt "$ATTEMPTS" ]]; then
+    cleanup_stale_build_state
+    echo "Build failed, retrying in ${SLEEP_SECONDS}s..."
+    sleep "$SLEEP_SECONDS"
+  fi
+done
+
+echo "Android build failed after $ATTEMPTS attempts."
+exit 1
--- a/android/build.gradle.kts
+++ b/android/build.gradle.kts
@ -0,0 +1,5 @@
+plugins {
+    id("com.android.application") version "8.5.2" apply false
+    id("com.chaquo.python") version "17.0.0" apply false
+    id("org.jetbrains.kotlin.android") version "1.9.24" apply false
+}
--- a/android/gradle.properties
+++ b/android/gradle.properties
@ -0,0 +1,6 @@
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+android.useAndroidX=true
+android.nonTransitiveRClass=true
+kotlin.code.style=official
+systemProp.org.gradle.internal.http.connectionTimeout=120000
+systemProp.org.gradle.internal.http.socketTimeout=120000
--- a/android/gradle/wrapper/gradle-wrapper.jar
+++ b/android/gradle/wrapper/gradle-wrapper.jar
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+networkTimeout=120000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/android/gradlew
+++ b/android/gradlew
@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/android/gradlew.bat
+++ b/android/gradlew.bat
@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/android/settings.gradle.kts
+++ b/android/settings.gradle.kts
@ -0,0 +1,28 @@
+pluginManagement {
+    repositories {
+        val localChaquopyRepo = file(System.getenv("LOCAL_CHAQUOPY_REPO") ?: ".m2-chaquopy")
+        if (localChaquopyRepo.isDirectory) {
+            maven(url = localChaquopyRepo.toURI())
+        }
+        maven("https://chaquo.com/maven")
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        val localChaquopyRepo = file(System.getenv("LOCAL_CHAQUOPY_REPO") ?: ".m2-chaquopy")
+        if (localChaquopyRepo.isDirectory) {
+            maven(url = localChaquopyRepo.toURI())
+        }
+        maven("https://chaquo.com/maven")
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "tg-ws-proxy-android"
+include(":app")
--- a/proxy/app_runtime.py
+++ b/proxy/app_runtime.py
@ -0,0 +1,231 @@
+from __future__ import annotations
+
+import asyncio as _asyncio
+import json
+import logging
+import logging.handlers
+import os
+import sys
+import threading
+import time
+from pathlib import Path
+from typing import Callable, Dict, Optional
+
+import proxy.tg_ws_proxy as tg_ws_proxy
+
+
+DEFAULT_CONFIG = {
+    "port": 1443,
+    "host": "127.0.0.1",
+    "secret": os.urandom(16).hex(),
+    "dc_ip": ["2:149.154.167.220", "4:149.154.167.220"],
+    "log_max_mb": 5,
+    "buf_kb": 256,
+    "pool_size": 4,
+    "verbose": False,
+}
+
+
+class ProxyAppRuntime:
+    def __init__(self, app_dir: Path,
+                 default_config: Optional[dict] = None,
+                 logger_name: str = "tg-ws-runtime",
+                 on_error: Optional[Callable[[str], None]] = None,
+                 parse_dc_ip_list: Optional[
+                     Callable[[list[str]], Dict[int, str]]
+                 ] = None,
+                 run_proxy: Optional[Callable[..., object]] = None,
+                 thread_factory: Optional[Callable[..., object]] = None):
+        self.app_dir = Path(app_dir)
+        self.config_file = self.app_dir / "config.json"
+        self.log_file = self.app_dir / "proxy.log"
+        self.default_config = dict(default_config or DEFAULT_CONFIG)
+        self.log = logging.getLogger(logger_name)
+        self.on_error = on_error
+        self.parse_dc_ip_list = parse_dc_ip_list or \
+            tg_ws_proxy.parse_dc_ip_list
+        self.run_proxy = run_proxy or tg_ws_proxy._run
+        self.thread_factory = thread_factory or threading.Thread
+        self.config: dict = {}
+        self._proxy_thread = None
+        self._async_stop = None
+
+    def _build_core_config(self, active_cfg: dict, dc_opt: Dict[int, str]):
+        port = int(active_cfg.get("port", self.default_config["port"]))
+        host = str(active_cfg.get("host", self.default_config["host"]))
+        secret = str(active_cfg.get("secret") or "").strip()
+        if not secret:
+            secret = os.urandom(16).hex()
+            active_cfg["secret"] = secret
+
+        buf_kb = int(active_cfg.get("buf_kb", self.default_config["buf_kb"]))
+        pool_size = int(active_cfg.get(
+            "pool_size", self.default_config["pool_size"]))
+
+        return tg_ws_proxy.ProxyConfig(
+            port=port,
+            host=host,
+            secret=secret,
+            dc_redirects=dc_opt,
+            buffer_size=max(4, buf_kb) * 1024,
+            pool_size=max(0, pool_size),
+        )
+
+    def ensure_dirs(self):
+        self.app_dir.mkdir(parents=True, exist_ok=True)
+
+    def load_config(self) -> dict:
+        self.ensure_dirs()
+        if self.config_file.exists():
+            try:
+                with open(self.config_file, "r", encoding="utf-8") as f:
+                    data = json.load(f)
+                for key, value in self.default_config.items():
+                    data.setdefault(key, value)
+                self.config = data
+                return data
+            except Exception as exc:
+                self.log.warning("Failed to load config: %s", exc)
+
+        self.config = dict(self.default_config)
+        return dict(self.config)
+
+    def save_config(self, cfg: dict):
+        self.ensure_dirs()
+        self.config = dict(cfg)
+        with open(self.config_file, "w", encoding="utf-8") as f:
+            json.dump(cfg, f, indent=2, ensure_ascii=False)
+
+    def reset_log_file(self):
+        if self.log_file.exists():
+            try:
+                self.log_file.unlink()
+            except Exception:
+                pass
+
+    def setup_logging(self, verbose: bool = False, log_max_mb: float = 5):
+        self.ensure_dirs()
+        root = logging.getLogger()
+        root.setLevel(logging.DEBUG if verbose else logging.INFO)
+
+        for handler in list(root.handlers):
+            if getattr(handler, "_tg_ws_proxy_runtime_handler", False):
+                root.removeHandler(handler)
+                try:
+                    handler.close()
+                except Exception:
+                    pass
+
+        fh = logging.handlers.RotatingFileHandler(
+            str(self.log_file),
+            maxBytes=max(32 * 1024, log_max_mb * 1024 * 1024),
+            backupCount=0,
+            encoding="utf-8",
+        )
+        fh.setLevel(logging.DEBUG)
+        fh.setFormatter(logging.Formatter(
+            "%(asctime)s  %(levelname)-5s  %(name)s  %(message)s",
+            datefmt="%Y-%m-%d %H:%M:%S"))
+        fh._tg_ws_proxy_runtime_handler = True
+        root.addHandler(fh)
+
+        if not getattr(sys, "frozen", False):
+            ch = logging.StreamHandler(sys.stdout)
+            ch.setLevel(logging.DEBUG if verbose else logging.INFO)
+            ch.setFormatter(logging.Formatter(
+                "%(asctime)s  %(levelname)-5s  %(message)s",
+                datefmt="%H:%M:%S"))
+            ch._tg_ws_proxy_runtime_handler = True
+            root.addHandler(ch)
+
+    def prepare(self) -> dict:
+        cfg = self.load_config()
+        self.save_config(cfg)
+        return cfg
+
+    def _emit_error(self, text: str):
+        if self.on_error:
+            self.on_error(text)
+
+    def _run_proxy_thread(self, port: int, dc_opt: Dict[int, str],
+                          host: str = "127.0.0.1"):
+        loop = _asyncio.new_event_loop()
+        _asyncio.set_event_loop(loop)
+        stop_ev = _asyncio.Event()
+        self._async_stop = (loop, stop_ev)
+
+        try:
+            loop.run_until_complete(self.run_proxy(stop_event=stop_ev))
+        except Exception as exc:
+            self.log.error("Proxy thread crashed: %s", exc)
+            exc_text = str(exc)
+            if ("10048" in exc_text or
+                    "address already in use" in exc_text.lower()):
+                self._emit_error(
+                    "Не удалось запустить прокси:\n"
+                    "Порт уже используется другим приложением.\n\n"
+                    "Закройте приложение, использующее этот порт, "
+                    "или измените порт в настройках прокси и перезапустите.")
+            else:
+                self._emit_error(str(exc) or exc.__class__.__name__)
+        finally:
+            loop.close()
+            self._async_stop = None
+
+    def start_proxy(self, cfg: Optional[dict] = None) -> bool:
+        if self._proxy_thread and self._proxy_thread.is_alive():
+            self.log.info("Proxy already running")
+            return True
+
+        active_cfg = dict(cfg or self.config or self.default_config)
+        self.config = dict(active_cfg)
+        port = active_cfg.get("port", self.default_config["port"])
+        host = active_cfg.get("host", self.default_config["host"])
+        dc_ip_list = active_cfg.get("dc_ip", self.default_config["dc_ip"])
+        buf_kb = active_cfg.get("buf_kb", self.default_config["buf_kb"])
+        pool_size = active_cfg.get(
+            "pool_size", self.default_config["pool_size"])
+
+        try:
+            dc_opt = self.parse_dc_ip_list(dc_ip_list)
+        except ValueError as exc:
+            self.log.error("Bad config dc_ip: %s", exc)
+            self._emit_error("Ошибка конфигурации:\n%s" % exc)
+            return False
+
+        tg_ws_proxy.proxy_config = self._build_core_config(active_cfg, dc_opt)
+        self.save_config(active_cfg)
+
+        self.log.info("Starting proxy on %s:%d ...", host, port)
+        tg_ws_proxy._RECV_BUF = max(4, buf_kb) * 1024
+        tg_ws_proxy._SEND_BUF = tg_ws_proxy._RECV_BUF
+        tg_ws_proxy._WS_POOL_SIZE = max(0, pool_size)
+        self._proxy_thread = self.thread_factory(
+            target=self._run_proxy_thread,
+            args=(
+                port,
+                dc_opt,
+                host,
+            ),
+            daemon=True,
+            name="proxy")
+        self._proxy_thread.start()
+        return True
+
+    def stop_proxy(self):
+        if self._async_stop:
+            loop, stop_ev = self._async_stop
+            loop.call_soon_threadsafe(stop_ev.set)
+            if self._proxy_thread:
+                self._proxy_thread.join(timeout=2)
+        self._proxy_thread = None
+        self.log.info("Proxy stopped")
+
+    def restart_proxy(self, delay_seconds: float = 0.3) -> bool:
+        self.log.info("Restarting proxy...")
+        self.stop_proxy()
+        time.sleep(delay_seconds)
+        return self.start_proxy()
+
+    def is_proxy_running(self) -> bool:
+        return bool(self._proxy_thread and self._proxy_thread.is_alive())
--- a/proxy/crypto_backend.py
+++ b/proxy/crypto_backend.py
@ -0,0 +1,208 @@
+from __future__ import annotations
+
+import os
+from typing import Protocol
+
+
+_SBOX = (
+    0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B,
+    0xFE, 0xD7, 0xAB, 0x76, 0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
+    0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, 0xB7, 0xFD, 0x93, 0x26,
+    0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
+    0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2,
+    0xEB, 0x27, 0xB2, 0x75, 0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
+    0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, 0x53, 0xD1, 0x00, 0xED,
+    0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
+    0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F,
+    0x50, 0x3C, 0x9F, 0xA8, 0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
+    0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, 0xCD, 0x0C, 0x13, 0xEC,
+    0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
+    0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14,
+    0xDE, 0x5E, 0x0B, 0xDB, 0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
+    0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, 0xE7, 0xC8, 0x37, 0x6D,
+    0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
+    0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F,
+    0x4B, 0xBD, 0x8B, 0x8A, 0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
+    0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, 0xE1, 0xF8, 0x98, 0x11,
+    0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
+    0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F,
+    0xB0, 0x54, 0xBB, 0x16,
+)
+_RCON = (0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36)
+
+
+class AesCtrTransform(Protocol):
+    def update(self, data: bytes) -> bytes:
+        ...
+
+    def finalize(self) -> bytes:
+        ...
+
+
+def _xtime(value: int) -> int:
+    value <<= 1
+    if value & 0x100:
+        value ^= 0x11B
+    return value & 0xFF
+
+
+def _mul2(value: int) -> int:
+    return _xtime(value)
+
+
+def _mul3(value: int) -> int:
+    return _xtime(value) ^ value
+
+
+def _add_round_key(state: list[int], round_key: bytes):
+    for idx in range(16):
+        state[idx] ^= round_key[idx]
+
+
+def _sub_bytes(state: list[int]):
+    for idx in range(16):
+        state[idx] = _SBOX[state[idx]]
+
+
+def _shift_rows(state: list[int]):
+    state[1], state[5], state[9], state[13] = (
+        state[5], state[9], state[13], state[1]
+    )
+    state[2], state[6], state[10], state[14] = (
+        state[10], state[14], state[2], state[6]
+    )
+    state[3], state[7], state[11], state[15] = (
+        state[15], state[3], state[7], state[11]
+    )
+
+
+def _mix_columns(state: list[int]):
+    for offset in range(0, 16, 4):
+        s0, s1, s2, s3 = state[offset:offset + 4]
+        state[offset + 0] = _mul2(s0) ^ _mul3(s1) ^ s2 ^ s3
+        state[offset + 1] = s0 ^ _mul2(s1) ^ _mul3(s2) ^ s3
+        state[offset + 2] = s0 ^ s1 ^ _mul2(s2) ^ _mul3(s3)
+        state[offset + 3] = _mul3(s0) ^ s1 ^ s2 ^ _mul2(s3)
+
+
+def _rot_word(word: list[int]) -> list[int]:
+    return word[1:] + word[:1]
+
+
+def _sub_word(word: list[int]) -> list[int]:
+    return [_SBOX[value] for value in word]
+
+
+def _expand_round_keys(key: bytes) -> tuple[list[bytes], int]:
+    if len(key) not in (16, 24, 32):
+        raise ValueError("AES key must be 16, 24, or 32 bytes long")
+
+    nk = len(key) // 4
+    nr = {4: 10, 6: 12, 8: 14}[nk]
+    words = [list(key[idx:idx + 4]) for idx in range(0, len(key), 4)]
+    total_words = 4 * (nr + 1)
+
+    for idx in range(nk, total_words):
+        temp = words[idx - 1][:]
+        if idx % nk == 0:
+            temp = _sub_word(_rot_word(temp))
+            temp[0] ^= _RCON[idx // nk - 1]
+        elif nk > 6 and idx % nk == 4:
+            temp = _sub_word(temp)
+        words.append([
+            words[idx - nk][byte_idx] ^ temp[byte_idx]
+            for byte_idx in range(4)
+        ])
+
+    round_keys = []
+    for round_idx in range(nr + 1):
+        start = round_idx * 4
+        round_keys.append(bytes(sum(words[start:start + 4], [])))
+    return round_keys, nr
+
+
+class _PurePythonAesCtrTransform:
+    def __init__(self, key: bytes, iv: bytes):
+        if len(iv) != 16:
+            raise ValueError("AES-CTR IV must be 16 bytes long")
+        self._round_keys, self._rounds = _expand_round_keys(key)
+        self._counter = bytearray(iv)
+        self._buffer = b""
+        self._buffer_offset = 0
+
+    def update(self, data: bytes) -> bytes:
+        if not data:
+            return b""
+
+        out = bytearray(len(data))
+        data_offset = 0
+
+        while data_offset < len(data):
+            if self._buffer_offset >= len(self._buffer):
+                self._buffer = self._encrypt_block(bytes(self._counter))
+                self._buffer_offset = 0
+                self._increment_counter()
+
+            available = len(self._buffer) - self._buffer_offset
+            chunk_size = min(len(data) - data_offset, available)
+            for chunk_idx in range(chunk_size):
+                out[data_offset + chunk_idx] = (
+                    data[data_offset + chunk_idx]
+                    ^ self._buffer[self._buffer_offset + chunk_idx]
+                )
+            data_offset += chunk_size
+            self._buffer_offset += chunk_size
+
+        return bytes(out)
+
+    def finalize(self) -> bytes:
+        return b""
+
+    def _encrypt_block(self, block: bytes) -> bytes:
+        state = list(block)
+        _add_round_key(state, self._round_keys[0])
+
+        for round_idx in range(1, self._rounds):
+            _sub_bytes(state)
+            _shift_rows(state)
+            _mix_columns(state)
+            _add_round_key(state, self._round_keys[round_idx])
+
+        _sub_bytes(state)
+        _shift_rows(state)
+        _add_round_key(state, self._round_keys[self._rounds])
+        return bytes(state)
+
+    def _increment_counter(self):
+        for idx in range(15, -1, -1):
+            self._counter[idx] = (self._counter[idx] + 1) & 0xFF
+            if self._counter[idx] != 0:
+                break
+
+
+def _create_cryptography_transform(key: bytes,
+                                   iv: bytes) -> AesCtrTransform:
+    from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+
+    cipher = Cipher(algorithms.AES(key), modes.CTR(iv))
+    return cipher.encryptor()
+
+
+def create_aes_ctr_transform(key: bytes, iv: bytes,
+                             backend: str | None = None) -> AesCtrTransform:
+    """
+    Create a stateful AES-CTR transform.
+
+    Windows keeps using `cryptography` by default. Android can select the
+    pure-Python backend to avoid native build dependencies.
+    """
+    selected = backend or os.environ.get(
+        'TG_WS_PROXY_CRYPTO_BACKEND', 'cryptography')
+
+    if selected == 'cryptography':
+        return _create_cryptography_transform(key, iv)
+
+    if selected == 'python':
+        return _PurePythonAesCtrTransform(key, iv)
+
+    raise ValueError(f"Unsupported AES-CTR backend: {selected}")
--- a/proxy/tg_ws_proxy.py
+++ b/proxy/tg_ws_proxy.py
@ -17,7 +17,7 @@ from collections import deque
 from dataclasses import dataclass, field
 from typing import Dict, List, Optional, Set, Tuple

-from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+from proxy.crypto_backend import create_aes_ctr_transform


@dataclass
@ -332,9 +332,10 @@ def _try_handshake(handshake: bytes, secret: bytes) -> Optional[Tuple[int, bool,
    dec_key = hashlib.sha256(dec_prekey + secret).digest()

    dec_iv_int = int.from_bytes(dec_iv, 'big')
-    decryptor = Cipher(
-        algorithms.AES(dec_key), modes.CTR(dec_iv_int.to_bytes(16, 'big'))
-    ).encryptor()
+    decryptor = create_aes_ctr_transform(
+        dec_key,
+        dec_iv_int.to_bytes(16, 'big'),
+    )
    decrypted = decryptor.update(handshake)

    proto_tag = decrypted[PROTO_TAG_POS:PROTO_TAG_POS + 4]
@ -367,9 +368,7 @@ def _generate_relay_init(proto_tag: bytes, dc_idx: int) -> bytes:
    enc_key = rnd_bytes[SKIP_LEN:SKIP_LEN + PREKEY_LEN]
    enc_iv = rnd_bytes[SKIP_LEN + PREKEY_LEN:SKIP_LEN + PREKEY_LEN + IV_LEN]

-    encryptor = Cipher(
-        algorithms.AES(enc_key), modes.CTR(enc_iv)
-    ).encryptor()
+    encryptor = create_aes_ctr_transform(enc_key, enc_iv)

    dc_bytes = struct.pack('<h', dc_idx)
    tail_plain = proto_tag + dc_bytes + os.urandom(2)
@ -393,9 +392,10 @@ class _MsgSplitter:
    __slots__ = ('_dec', '_proto', '_cipher_buf', '_plain_buf', '_disabled')

    def __init__(self, relay_init: bytes, proto_int: int):
-        cipher = Cipher(algorithms.AES(relay_init[8:40]),
-                        modes.CTR(relay_init[40:56]))
-        self._dec = cipher.encryptor()
+        self._dec = create_aes_ctr_transform(
+            relay_init[8:40],
+            relay_init[40:56],
+        )
        self._dec.update(ZERO_64)
        self._proto = proto_int
        self._cipher_buf = bytearray()
@ -493,6 +493,7 @@ class Stats:
        self.bytes_down = 0
        self.pool_hits = 0
        self.pool_misses = 0
+        self.last_transport_route: Optional[str] = None

    def summary(self) -> str:
        pool_total = self.pool_hits + self.pool_misses
@ -511,12 +512,34 @@ class Stats:
 _stats = Stats()


+def reset_stats() -> None:
+    global _stats
+    _stats = Stats()
+
+
+def get_stats_snapshot() -> Dict[str, object]:
+    return {
+        "connections_total": _stats.connections_total,
+        "connections_active": _stats.connections_active,
+        "connections_ws": _stats.connections_ws,
+        "connections_tcp_fallback": _stats.connections_tcp_fallback,
+        "connections_bad": _stats.connections_bad,
+        "ws_errors": _stats.ws_errors,
+        "bytes_up": _stats.bytes_up,
+        "bytes_down": _stats.bytes_down,
+        "pool_hits": _stats.pool_hits,
+        "pool_misses": _stats.pool_misses,
+        "last_transport_route": _stats.last_transport_route,
+    }
+
+
 class _WsPool:
    WS_POOL_MAX_AGE = 120.0
    
    def __init__(self):
        self._idle: Dict[Tuple[int, bool], deque] = {}
        self._refilling: Set[Tuple[int, bool]] = set()
+        self._refill_tasks: Dict[Tuple[int, bool], asyncio.Task] = {}

    async def get(self, dc: int, is_media: bool,
                  target_ip: str, domains: List[str]
@ -549,10 +572,13 @@ class _WsPool:
        if key in self._refilling:
            return
        self._refilling.add(key)
-        asyncio.create_task(self._refill(key, target_ip, domains))
+        task = asyncio.create_task(self._refill(key, target_ip, domains))
+        self._refill_tasks[key] = task
+        task.add_done_callback(lambda _t, refill_key=key: self._refill_tasks.pop(refill_key, None))

    async def _refill(self, key, target_ip, domains):
        dc, is_media = key
+        tasks: List[asyncio.Task] = []
        try:
            bucket = self._idle.setdefault(key, deque())
            needed = proxy_config.pool_size - len(bucket)
@ -566,10 +592,19 @@ class _WsPool:
                    ws = await t
                    if ws:
                        bucket.append((ws, time.monotonic()))
+                except asyncio.CancelledError:
+                    raise
                except Exception:
                    pass
            log.debug("WS pool refilled DC%d%s: %d ready",
                      dc, 'm' if is_media else '', len(bucket))
+        except asyncio.CancelledError:
+            for task in tasks:
+                if not task.done():
+                    task.cancel()
+            if tasks:
+                await asyncio.gather(*tasks, return_exceptions=True)
+            raise
        finally:
            self._refilling.discard(key)

@ -603,6 +638,29 @@ class _WsPool:
                self._schedule_refill((dc, is_media), target_ip, domains)
        log.info("WS pool warmup started for %d DC(s)", len(dc_redirects))

+    async def close(self):
+        refill_tasks = list(self._refill_tasks.values())
+        self._refill_tasks.clear()
+        for task in refill_tasks:
+            if not task.done():
+                task.cancel()
+        if refill_tasks:
+            await asyncio.gather(*refill_tasks, return_exceptions=True)
+
+        idle_sockets = []
+        for bucket in self._idle.values():
+            while bucket:
+                ws, _created = bucket.popleft()
+                idle_sockets.append(ws)
+        self._idle.clear()
+        self._refilling.clear()
+
+        if idle_sockets:
+            await asyncio.gather(
+                *(self._quiet_close(ws) for ws in idle_sockets),
+                return_exceptions=True,
+            )
+
 _ws_pool = _WsPool()


@ -769,6 +827,7 @@ async def _tcp_fallback(reader, writer, dst, port, relay_init, label,
        return False

    _stats.connections_tcp_fallback += 1
+    _stats.last_transport_route = "tcp_fallback"
    rw.write(relay_init)
    await rw.drain()
    await _bridge_tcp_reencrypt(reader, writer, rr, rw, label,
@ -838,12 +897,8 @@ async def _handle_client(reader, writer, secret: bytes):
            clt_enc_prekey_iv[:PREKEY_LEN] + secret).digest()
        clt_enc_iv = clt_enc_prekey_iv[PREKEY_LEN:]

-        clt_decryptor = Cipher(
-            algorithms.AES(clt_dec_key), modes.CTR(clt_dec_iv)
-        ).encryptor()
-        clt_encryptor = Cipher(
-            algorithms.AES(clt_enc_key), modes.CTR(clt_enc_iv)
-        ).encryptor()
+        clt_decryptor = create_aes_ctr_transform(clt_dec_key, clt_dec_iv)
+        clt_encryptor = create_aes_ctr_transform(clt_enc_key, clt_enc_iv)

        # fast-forward client decryptor past the 64-byte init
        clt_decryptor.update(ZERO_64)
@ -858,12 +913,8 @@ async def _handle_client(reader, writer, secret: bytes):
        relay_dec_key = relay_dec_prekey_iv[:KEY_LEN]
        relay_dec_iv = relay_dec_prekey_iv[KEY_LEN:]

-        tg_encryptor = Cipher(
-            algorithms.AES(relay_enc_key), modes.CTR(relay_enc_iv)
-        ).encryptor()
-        tg_decryptor = Cipher(
-            algorithms.AES(relay_dec_key), modes.CTR(relay_dec_iv)
-        ).encryptor()
+        tg_encryptor = create_aes_ctr_transform(relay_enc_key, relay_enc_iv)
+        tg_decryptor = create_aes_ctr_transform(relay_dec_key, relay_dec_iv)
        
        tg_encryptor.update(ZERO_64)

@ -965,6 +1016,7 @@ async def _handle_client(reader, writer, secret: bytes):

        dc_fail_until.pop(dc_key, None)
        _stats.connections_ws += 1
+        _stats.last_transport_route = "telegram_ws_direct"

        splitter = None
        try:
@ -1087,6 +1139,7 @@ async def _run(stop_event: Optional[asyncio.Event] = None):
            else:
                await server.serve_forever()
    finally:
+        await _ws_pool.close()
        log_stats_task.cancel()
        try:
            await log_stats_task
--- a/tests/test_android_proxy_bridge.py
+++ b/tests/test_android_proxy_bridge.py
@ -0,0 +1,264 @@
+import sys
+import unittest
+import json
+import subprocess
+from pathlib import Path
+
+
+sys.path.insert(0, str(
+    Path(__file__).resolve().parents[1] / "android" / "app" / "src" / "main" / "python"
+))
+
+import android_proxy_bridge  # noqa: E402
+import proxy.tg_ws_proxy as tg_ws_proxy  # noqa: E402
+
+
+class FakeJavaArrayList:
+    def __init__(self, items):
+        self._items = list(items)
+
+    def size(self):
+        return len(self._items)
+
+    def get(self, index):
+        return self._items[index]
+
+
+class AndroidProxyBridgeTests(unittest.TestCase):
+    def tearDown(self):
+        tg_ws_proxy.reset_stats()
+        android_proxy_bridge._LAST_ERROR = None
+
+    def test_normalize_dc_ip_list_with_python_iterable(self):
+        result = android_proxy_bridge._normalize_dc_ip_list([
+            "2:149.154.167.220",
+            "  ",
+            "4:149.154.167.220 ",
+        ])
+
+        self.assertEqual(result, [
+            "2:149.154.167.220",
+            "4:149.154.167.220",
+        ])
+
+    def test_get_runtime_stats_json_reports_proxy_counters(self):
+        tg_ws_proxy.reset_stats()
+        snapshot = tg_ws_proxy.get_stats_snapshot()
+        snapshot["bytes_up"] = 1536
+        snapshot["bytes_down"] = 4096
+        tg_ws_proxy._stats.bytes_up = snapshot["bytes_up"]
+        tg_ws_proxy._stats.bytes_down = snapshot["bytes_down"]
+
+        result = json.loads(android_proxy_bridge.get_runtime_stats_json())
+
+        self.assertEqual(result["bytes_up"], 1536)
+        self.assertEqual(result["bytes_down"], 4096)
+        self.assertFalse(result["running"])
+        self.assertIsNone(result["last_error"])
+
+    def test_get_runtime_stats_json_includes_last_error(self):
+        android_proxy_bridge._LAST_ERROR = "boom"
+
+        result = json.loads(android_proxy_bridge.get_runtime_stats_json())
+
+        self.assertEqual(result["last_error"], "boom")
+
+    def test_normalize_dc_ip_list_with_java_array_list_shape(self):
+        result = android_proxy_bridge._normalize_dc_ip_list(FakeJavaArrayList([
+            "2:149.154.167.220",
+            "4:149.154.167.220",
+        ]))
+
+        self.assertEqual(result, [
+            "2:149.154.167.220",
+            "4:149.154.167.220",
+        ])
+
+    def test_start_proxy_saves_advanced_runtime_config(self):
+        captured = {}
+
+        class FakeRuntime:
+            def __init__(self, *args, **kwargs):
+                captured["runtime_init"] = kwargs
+                self.log_file = Path("/tmp/proxy.log")
+
+            def reset_log_file(self):
+                captured["reset_log_file"] = True
+
+            def setup_logging(self, verbose=False, log_max_mb=5):
+                captured["verbose"] = verbose
+                captured["log_max_mb"] = log_max_mb
+
+            def save_config(self, config):
+                captured["config"] = dict(config)
+
+            def start_proxy(self, config):
+                captured["start_proxy"] = dict(config)
+                return True
+
+            def is_proxy_running(self):
+                return True
+
+            def stop_proxy(self):
+                captured["stop_proxy"] = True
+
+        original_runtime = android_proxy_bridge.ProxyAppRuntime
+        try:
+            android_proxy_bridge.ProxyAppRuntime = FakeRuntime
+            log_path = android_proxy_bridge.start_proxy(
+                "/tmp/app",
+                "127.0.0.1",
+                1443,
+                "0123456789abcdef0123456789abcdef",
+                ["2:149.154.167.220"],
+                7.0,
+                512,
+                6,
+                True,
+            )
+        finally:
+            android_proxy_bridge.ProxyAppRuntime = original_runtime
+
+        self.assertEqual(log_path, "/tmp/proxy.log")
+        self.assertEqual(captured["config"]["secret"], "0123456789abcdef0123456789abcdef")
+        self.assertEqual(captured["config"]["log_max_mb"], 7.0)
+        self.assertEqual(captured["config"]["buf_kb"], 512)
+        self.assertEqual(captured["config"]["pool_size"], 6)
+        self.assertEqual(captured["log_max_mb"], 7.0)
+        self.assertTrue(captured["verbose"])
+
+    def test_get_update_status_json_merges_python_update_state(self):
+        original_load_update_check = android_proxy_bridge._load_update_check
+        try:
+            captured = {}
+
+            class FakeUpdateCheck:
+                RELEASES_PAGE_URL = "https://example.com/releases/latest"
+
+                @staticmethod
+                def run_check(version):
+                    captured["run_check_version"] = version
+
+                @staticmethod
+                def get_status():
+                    return {
+                        "checked": True,
+                        "latest": "1.3.1",
+                        "has_update": True,
+                        "ahead_of_release": False,
+                        "html_url": "https://example.com/release",
+                        "error": "",
+                    }
+
+            android_proxy_bridge._load_update_check = lambda: FakeUpdateCheck
+            result = json.loads(android_proxy_bridge.get_update_status_json(True))
+        finally:
+            android_proxy_bridge._load_update_check = original_load_update_check
+
+        self.assertEqual(captured["run_check_version"], android_proxy_bridge.__version__)
+        self.assertEqual(result["current_version"], android_proxy_bridge.__version__)
+        self.assertEqual(result["latest"], "1.3.1")
+        self.assertTrue(result["has_update"])
+        self.assertTrue(result["checked"])
+        self.assertEqual(result["html_url"], "https://example.com/release")
+
+    def test_get_update_status_json_reports_unchecked_state(self):
+        original_load_update_check = android_proxy_bridge._load_update_check
+        try:
+            class FakeUpdateCheck:
+                RELEASES_PAGE_URL = "https://example.com/releases/latest"
+
+                @staticmethod
+                def get_status():
+                    return {
+                        "checked": False,
+                        "latest": "",
+                        "has_update": False,
+                        "ahead_of_release": False,
+                        "html_url": "",
+                        "error": "",
+                    }
+
+            android_proxy_bridge._load_update_check = lambda: FakeUpdateCheck
+            result = json.loads(android_proxy_bridge.get_update_status_json(False))
+        finally:
+            android_proxy_bridge._load_update_check = original_load_update_check
+
+        self.assertFalse(result["checked"])
+        self.assertEqual(result["current_version"], android_proxy_bridge.__version__)
+
+    def test_get_update_status_json_reports_import_error_without_breaking_bridge(self):
+        original_load_update_check = android_proxy_bridge._load_update_check
+        try:
+            def fail():
+                raise ModuleNotFoundError("No module named 'utils'")
+
+            android_proxy_bridge._load_update_check = fail
+            result = json.loads(android_proxy_bridge.get_update_status_json(True))
+        finally:
+            android_proxy_bridge._load_update_check = original_load_update_check
+
+        self.assertFalse(result["checked"])
+        self.assertIn("No module named 'utils'", result["error"])
+
+    def test_get_update_status_json_normalizes_none_fields_for_kotlin(self):
+        original_load_update_check = android_proxy_bridge._load_update_check
+        try:
+            class FakeUpdateCheck:
+                RELEASES_PAGE_URL = "https://example.com/releases/latest"
+
+                @staticmethod
+                def get_status():
+                    return {
+                        "checked": True,
+                        "latest": None,
+                        "has_update": False,
+                        "ahead_of_release": True,
+                        "html_url": None,
+                        "error": None,
+                    }
+
+            android_proxy_bridge._load_update_check = lambda: FakeUpdateCheck
+            result = json.loads(android_proxy_bridge.get_update_status_json(False))
+        finally:
+            android_proxy_bridge._load_update_check = original_load_update_check
+
+        self.assertEqual(result["latest"], "")
+        self.assertEqual(result["error"], "")
+        self.assertEqual(result["html_url"], "https://example.com/releases/latest")
+
+    def test_android_bridge_import_and_update_status_work_without_cryptography(self):
+        root = Path(__file__).resolve().parents[1]
+        script = f"""
+import importlib.abc
+import sys
+from pathlib import Path
+
+root = Path({str(root)!r})
+sys.path.insert(0, str(root / "android" / "app" / "src" / "main" / "python"))
+sys.path.insert(0, str(root))
+
+class BlockCryptography(importlib.abc.MetaPathFinder):
+    def find_spec(self, fullname, path, target=None):
+        if fullname == "cryptography" or fullname.startswith("cryptography."):
+            raise ModuleNotFoundError("No module named 'cryptography'")
+        return None
+
+sys.meta_path.insert(0, BlockCryptography())
+
+import android_proxy_bridge
+print(android_proxy_bridge.get_update_status_json(False))
+"""
+        result = subprocess.run(
+            [sys.executable, "-c", script],
+            check=True,
+            capture_output=True,
+            text=True,
+        )
+        payload = json.loads(result.stdout.strip())
+        self.assertEqual(payload["current_version"], android_proxy_bridge.__version__)
+        self.assertEqual(payload["error"], "")
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tests/test_app_runtime.py
+++ b/tests/test_app_runtime.py
@ -0,0 +1,166 @@
+import json
+import tempfile
+import unittest
+from pathlib import Path
+
+from proxy.app_runtime import DEFAULT_CONFIG, ProxyAppRuntime
+
+
+class _FakeThread:
+    def __init__(self, target=None, args=(), daemon=None, name=None):
+        self.target = target
+        self.args = args
+        self.daemon = daemon
+        self.name = name
+        self.started = False
+        self.join_timeout = None
+        self._alive = False
+
+    def start(self):
+        self.started = True
+        self._alive = True
+
+    def is_alive(self):
+        return self._alive
+
+    def join(self, timeout=None):
+        self.join_timeout = timeout
+        self._alive = False
+
+
+class ProxyAppRuntimeTests(unittest.TestCase):
+    def test_load_config_returns_defaults_when_missing(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            runtime = ProxyAppRuntime(Path(tmpdir))
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg, DEFAULT_CONFIG)
+
+    def test_load_config_merges_defaults_into_saved_config(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            app_dir = Path(tmpdir)
+            config_path = app_dir / "config.json"
+            app_dir.mkdir(parents=True, exist_ok=True)
+            config_path.write_text(
+                json.dumps({"port": 9050, "host": "127.0.0.2"}),
+                encoding="utf-8")
+            runtime = ProxyAppRuntime(app_dir)
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg["port"], 9050)
+            self.assertEqual(cfg["host"], "127.0.0.2")
+            self.assertEqual(cfg["dc_ip"], DEFAULT_CONFIG["dc_ip"])
+            self.assertEqual(cfg["verbose"], DEFAULT_CONFIG["verbose"])
+
+    def test_invalid_config_file_falls_back_to_defaults(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            app_dir = Path(tmpdir)
+            app_dir.mkdir(parents=True, exist_ok=True)
+            (app_dir / "config.json").write_text("{broken", encoding="utf-8")
+            runtime = ProxyAppRuntime(app_dir)
+
+            cfg = runtime.load_config()
+
+            self.assertEqual(cfg, DEFAULT_CONFIG)
+
+    def test_start_proxy_starts_thread_with_parsed_dc_options(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            captured = {}
+            thread_holder = {}
+
+            def fake_parse(entries):
+                captured["dc_ip"] = list(entries)
+                return {2: "149.154.167.220"}
+
+            def fake_thread_factory(**kwargs):
+                thread = _FakeThread(**kwargs)
+                thread_holder["thread"] = thread
+                return thread
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                parse_dc_ip_list=fake_parse,
+                thread_factory=fake_thread_factory)
+
+            started = runtime.start_proxy(dict(DEFAULT_CONFIG))
+
+            self.assertTrue(started)
+            self.assertEqual(captured["dc_ip"], DEFAULT_CONFIG["dc_ip"])
+            self.assertTrue(thread_holder["thread"].started)
+            self.assertEqual(
+                thread_holder["thread"].args,
+                (DEFAULT_CONFIG["port"], {2: "149.154.167.220"},
+                 DEFAULT_CONFIG["host"]))
+
+    def test_start_proxy_reports_bad_config(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            errors = []
+
+            def fake_parse(entries):
+                raise ValueError("bad dc mapping")
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                parse_dc_ip_list=fake_parse,
+                on_error=errors.append)
+
+            started = runtime.start_proxy({
+                "host": "127.0.0.1",
+                "port": 1080,
+                "dc_ip": ["broken"],
+                "verbose": False,
+            })
+
+            self.assertFalse(started)
+            self.assertEqual(errors, ["Ошибка конфигурации:\nbad dc mapping"])
+
+    def test_run_proxy_thread_reports_generic_runtime_error(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            errors = []
+
+            async def fake_run_proxy(stop_event=None):
+                raise RuntimeError("proxy boom")
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                on_error=errors.append,
+                run_proxy=fake_run_proxy,
+            )
+
+            runtime._run_proxy_thread(1443, {2: "149.154.167.220"}, "127.0.0.1")
+
+            self.assertEqual(errors, ["proxy boom"])
+
+    def test_run_proxy_thread_reports_port_in_use_case_insensitively(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            errors = []
+
+            async def fake_run_proxy(stop_event=None):
+                raise RuntimeError(
+                    "[Errno 98] error while attempting to bind on address "
+                    "('127.0.0.1', 1443): address already in use"
+                )
+
+            runtime = ProxyAppRuntime(
+                Path(tmpdir),
+                on_error=errors.append,
+                run_proxy=fake_run_proxy,
+            )
+
+            runtime._run_proxy_thread(1443, {2: "149.154.167.220"}, "127.0.0.1")
+
+            self.assertEqual(
+                errors,
+                [
+                    "Не удалось запустить прокси:\n"
+                    "Порт уже используется другим приложением.\n\n"
+                    "Закройте приложение, использующее этот порт, "
+                    "или измените порт в настройках прокси и перезапустите."
+                ],
+            )
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tests/test_crypto_mtproto.py
+++ b/tests/test_crypto_mtproto.py
@ -0,0 +1,142 @@
+import hashlib
+import struct
+import unittest
+
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+
+from proxy.crypto_backend import create_aes_ctr_transform
+from proxy.tg_ws_proxy import (
+    PROTO_ABRIDGED_INT,
+    PROTO_TAG_ABRIDGED,
+    _MsgSplitter,
+    _generate_relay_init,
+    _try_handshake,
+)
+
+
+KEY = bytes(range(32))
+IV = bytes(range(16))
+SECRET = bytes.fromhex("0123456789abcdef0123456789abcdef")
+
+
+def _xor(left: bytes, right: bytes) -> bytes:
+    return bytes(a ^ b for a, b in zip(left, right))
+
+
+def _keystream(size: int, key: bytes, iv: bytes) -> bytes:
+    transform = Cipher(algorithms.AES(key), modes.CTR(iv)).encryptor()
+    return transform.update(b"\x00" * size)
+
+
+def _build_client_handshake(
+    dc_raw: int,
+    proto_tag: bytes = PROTO_TAG_ABRIDGED,
+    secret: bytes = SECRET,
+) -> bytes:
+    packet = bytearray(64)
+    packet[8:40] = KEY
+    packet[40:56] = IV
+
+    dec_key = hashlib.sha256(KEY + secret).digest()
+    plain_tail = proto_tag + struct.pack("<h", dc_raw) + b"\x00\x00"
+    packet[56:64] = _xor(plain_tail, _keystream(64, dec_key, IV)[56:64])
+    return bytes(packet)
+
+
+def _encrypt_after_init(relay_init: bytes, plaintext: bytes) -> bytes:
+    transform = Cipher(
+        algorithms.AES(relay_init[8:40]),
+        modes.CTR(relay_init[40:56]),
+    ).encryptor()
+    transform.update(b"\x00" * 64)
+    return transform.update(plaintext)
+
+
+class CryptoBackendTests(unittest.TestCase):
+    def test_python_backend_matches_cryptography_stream(self):
+        cryptography_transform = create_aes_ctr_transform(
+            KEY, IV, backend="cryptography")
+        python_transform = create_aes_ctr_transform(KEY, IV, backend="python")
+
+        chunks = [
+            b"",
+            b"\x00" * 16,
+            bytes(range(31)),
+            b"telegram-proxy",
+            b"\xff" * 64,
+        ]
+
+        cryptography_out = b"".join(
+            cryptography_transform.update(chunk) for chunk in chunks
+        ) + cryptography_transform.finalize()
+        python_out = b"".join(
+            python_transform.update(chunk) for chunk in chunks
+        ) + python_transform.finalize()
+
+        self.assertEqual(python_out, cryptography_out)
+
+    def test_unknown_backend_raises_error(self):
+        with self.assertRaises(ValueError):
+            create_aes_ctr_transform(KEY, IV, backend="missing")
+
+
+class MtProtoHandshakeTests(unittest.TestCase):
+    def test_try_handshake_reads_non_media_dc(self):
+        handshake = _build_client_handshake(dc_raw=2)
+
+        result = _try_handshake(handshake, SECRET)
+
+        self.assertEqual(result[:3], (2, False, PROTO_TAG_ABRIDGED))
+
+    def test_try_handshake_reads_media_dc(self):
+        handshake = _build_client_handshake(dc_raw=-4)
+
+        result = _try_handshake(handshake, SECRET)
+
+        self.assertEqual(result[:3], (4, True, PROTO_TAG_ABRIDGED))
+
+    def test_try_handshake_rejects_wrong_secret(self):
+        handshake = _build_client_handshake(dc_raw=2)
+
+        result = _try_handshake(
+            handshake,
+            bytes.fromhex("fedcba9876543210fedcba9876543210"),
+        )
+
+        self.assertIsNone(result)
+
+    def test_generate_relay_init_encodes_proto_and_signed_dc(self):
+        relay_init = _generate_relay_init(PROTO_TAG_ABRIDGED, -3)
+        decryptor = Cipher(
+            algorithms.AES(relay_init[8:40]),
+            modes.CTR(relay_init[40:56]),
+        ).encryptor()
+
+        decrypted = decryptor.update(relay_init)
+
+        self.assertEqual(decrypted[56:60], PROTO_TAG_ABRIDGED)
+        self.assertEqual(struct.unpack("<h", decrypted[60:62])[0], -3)
+
+
+class MsgSplitterTests(unittest.TestCase):
+    def test_splitter_splits_multiple_abridged_messages(self):
+        relay_init = _generate_relay_init(PROTO_TAG_ABRIDGED, -2)
+        plain_chunk = b"\x01abcd\x02EFGH1234"
+        encrypted_chunk = _encrypt_after_init(relay_init, plain_chunk)
+
+        parts = _MsgSplitter(relay_init, PROTO_ABRIDGED_INT).split(encrypted_chunk)
+
+        self.assertEqual(parts, [encrypted_chunk[:5], encrypted_chunk[5:14]])
+
+    def test_splitter_leaves_single_message_intact(self):
+        relay_init = _generate_relay_init(PROTO_TAG_ABRIDGED, 2)
+        plain_chunk = b"\x02abcdefgh"
+        encrypted_chunk = _encrypt_after_init(relay_init, plain_chunk)
+
+        parts = _MsgSplitter(relay_init, PROTO_ABRIDGED_INT).split(encrypted_chunk)
+
+        self.assertEqual(parts, [encrypted_chunk])
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tests/test_socks5_protocol.py
+++ b/tests/test_socks5_protocol.py
@ -0,0 +1,62 @@
+import hashlib
+import struct
+import unittest
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+
+from proxy.tg_ws_proxy import (
+    PROTO_TAG_ABRIDGED,
+    PROTO_TAG_INTERMEDIATE,
+    _generate_relay_init,
+    _try_handshake,
+)
+
+
+KEY = bytes(range(32))
+IV = bytes(range(16))
+SECRET = bytes.fromhex("0123456789abcdef0123456789abcdef")
+
+
+def _xor(left: bytes, right: bytes) -> bytes:
+    return bytes(a ^ b for a, b in zip(left, right))
+
+
+def _build_client_handshake(dc_raw: int, proto_tag: bytes) -> bytes:
+    packet = bytearray(64)
+    packet[8:40] = KEY
+    packet[40:56] = IV
+
+    dec_key = hashlib.sha256(KEY + SECRET).digest()
+    decryptor = Cipher(algorithms.AES(dec_key), modes.CTR(IV)).encryptor()
+    keystream = decryptor.update(b"\x00" * 64)
+
+    plain_tail = proto_tag + struct.pack("<h", dc_raw) + b"\x00\x00"
+    packet[56:64] = _xor(plain_tail, keystream[56:64])
+    return bytes(packet)
+
+
+class MtProtoProtocolTests(unittest.TestCase):
+    def test_try_handshake_accepts_abridged_proto(self):
+        handshake = _build_client_handshake(2, PROTO_TAG_ABRIDGED)
+
+        result = _try_handshake(handshake, SECRET)
+
+        self.assertIsNotNone(result)
+        self.assertEqual(result[:3], (2, False, PROTO_TAG_ABRIDGED))
+
+    def test_try_handshake_accepts_intermediate_proto(self):
+        handshake = _build_client_handshake(-4, PROTO_TAG_INTERMEDIATE)
+
+        result = _try_handshake(handshake, SECRET)
+
+        self.assertIsNotNone(result)
+        self.assertEqual(result[:3], (4, True, PROTO_TAG_INTERMEDIATE))
+
+    def test_generate_relay_init_produces_handshake_sized_packet(self):
+        relay_init = _generate_relay_init(PROTO_TAG_ABRIDGED, -2)
+
+        self.assertEqual(len(relay_init), 64)
+        self.assertEqual(relay_init[0], relay_init[0] & 0xFF)
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tests/test_update_check.py
+++ b/tests/test_update_check.py
@ -0,0 +1,57 @@
+import unittest
+
+from proxy import __version__
+from utils import update_check
+
+
+class UpdateCheckTests(unittest.TestCase):
+    def setUp(self):
+        self._orig_state = dict(update_check._state)
+
+    def tearDown(self):
+        update_check._state.clear()
+        update_check._state.update(self._orig_state)
+
+    def test_apply_release_tag_marks_update_available(self):
+        version_parts = [int(part) for part in __version__.split(".")]
+        version_parts[-1] += 1
+        next_version = ".".join(str(part) for part in version_parts)
+        update_check._apply_release_tag(
+            tag=f"v{next_version}",
+            html_url="https://example.com/release",
+            current_version=__version__,
+        )
+
+        status = update_check.get_status()
+        self.assertTrue(status["has_update"])
+        self.assertFalse(status["ahead_of_release"])
+        self.assertEqual(status["latest"], next_version)
+        self.assertEqual(status["html_url"], "https://example.com/release")
+
+    def test_apply_release_tag_marks_ahead_of_release(self):
+        update_check._apply_release_tag(
+            tag="v1.2.1",
+            html_url="https://example.com/release",
+            current_version=__version__,
+        )
+
+        status = update_check.get_status()
+        self.assertFalse(status["has_update"])
+        self.assertTrue(status["ahead_of_release"])
+        self.assertEqual(status["latest"], "1.2.1")
+
+    def test_apply_release_tag_marks_latest_when_versions_match(self):
+        update_check._apply_release_tag(
+            tag=f"v{__version__}",
+            html_url="https://example.com/release",
+            current_version=__version__,
+        )
+
+        status = update_check.get_status()
+        self.assertFalse(status["has_update"])
+        self.assertFalse(status["ahead_of_release"])
+        self.assertEqual(status["latest"], __version__)
+
+
+if __name__ == "__main__":
+    unittest.main()
				`@ -0,0 +1 @@`
				`# Intentionally empty for the initial Android shell.`