Optimize realtime charts for tablet

Add Android USB serial bridge docs
perf: optimize mobile line chart performance and remove window controls
2026-05-12 18:38:22 +08:00 · 2026-05-11 22:30:45 +08:00 · 2026-05-11 22:11:40 +08:00 · 2026-05-11 20:31:46 +08:00 · 2026-05-11 19:49:28 +08:00 · 2026-05-11 19:38:01 +08:00
65 changed files with 2398 additions and 369 deletions
--- a/README.md
+++ b/README.md
@@ -1,10 +1,11 @@
-# Tauri Demo (SvelteKit + TypeScript)
+# JE-Skin (SvelteKit + Tauri)

 ## 环境要求

 - Node.js 18+（建议 LTS）
 - Rust stable（`rustup` + `cargo`）
 - Windows 下请确保已安装 WebView2 Runtime 和 MSVC C++ 构建工具
+- Android 构建需要 Android SDK + NDK

 ## 安装依赖

@@ -42,12 +43,61 @@ npm run build
 npm run tauri build
 ```

+构建 Android APK / AAB：
+
+```sh
+npx tauri android build
+```
+
+产物路径：
+- APK: `src-tauri/gen/android/app/build/outputs/apk/universal/release/app-universal-release.apk`
+- AAB: `src-tauri/gen/android/app/build/outputs/bundle/universalRelease/app-universal-release.aab`
+
+Release APK 默认使用 debug keystore 签名（`src-tauri/gen/android/app/je-skin-debug.keystore`），可直接 `adb install` 到设备。
+
 ## 代码检查

 ```sh
 npm run check
 ```

+## v0.5.0 修改记录
+
+### Android USB 串口接入
+
+- **Tauri 插件注册**：Android 端通过 Rust builder 注册 `usb-serial` 插件，移除 `MainActivity` 中的手动加载逻辑
+- **USB 设备枚举**：使用 `usb-serial-for-android` 的 `UsbSerialProber` 识别串口设备，并返回设备名、厂商 ID、产品 ID、权限状态等信息
+- **USB 权限申请**：完善 Android USB 授权回调，支持按设备名、vendorId/productId 解析设备并处理授权后的打开流程
+- **串口数据桥接**：Kotlin 端打开 USB serial port 后通过 Unix socketpair 将 fd 交给 Rust，Rust 端继续复用 `serial_connect_fd` 数据采集链路
+- **资源释放**：关闭连接时同步释放桥接 fd、USB serial port 和 `UsbDeviceConnection`，避免重复打开后的资源残留
+
+### Tauri 权限与构建
+
+- 新增 `src-tauri/permissions/usb-serial/default.toml`，声明 Android USB serial 插件命令和前端所需本地命令权限
+- `default.json` 增加 USB serial 与本地命令权限，兼容 snake_case / camelCase 插件命令名
+- Android Gradle 仓库加入 JitPack，用于解析 USB serial 驱动依赖
+- ProGuard 增加 Tauri 插件注解、`UsbSerialPlugin` 和 `com.hoho.android.usbserial` 保留规则，避免 release 包混淆后插件命令失效
+- Android 构建下 `serial_enum` 返回空列表，并仅保留 fd 连接入口，避免桌面串口枚举依赖进入 Android 编译路径
+
+## v0.4.0 修改记录
+
+### 移动端性能优化
+
+- **SignalChart / SummaryCurve**：在 `@media (max-width: 900px)` 下移除 SVG 路径上的 `filter: drop-shadow()`，避免移动端 GPU 软件回流导致卡顿
+- **SignalChart**：隐藏 `.scan-haze`（`mix-blend-mode: screen` 合成开销大），简化面板 `background` / `box-shadow`
+- **SummaryCurve**：移动端移除 `.summary-line` 和 `.summary-dot` 的 drop-shadow 滤镜
+- **页面级**：移动端隐藏 `.hud-noise`（`feTurbulence` SVG 滤镜是最大性能杀手），降低 `.hud-vignette` 透明度，简化 `.hud-gradient`
+- 移除 inactive 面板的 `filter: blur()` 过渡动画
+- 移除 transition 中的 `filter` 属性，添加 `will-change: d` 优化路径更新
+
+### 移动端 UI 调整
+
+- **隐藏三大金刚**：`@media (max-width: 900px)` 下隐藏标题栏右侧的最小化/最大化/关闭按钮（Android 系统自带窗口管理）
+
+### Android 打包
+
+- Release 构建配置使用 debug keystore 签名，输出签名 APK 而非 unsigned
+
 ## 推荐 IDE 插件

 [VS Code](https://code.visualstudio.com/) + [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode) + [Tauri](https://marketplace.visualstudio.com/items?itemName=tauri-apps.tauri-vscode) + [rust-analyzer](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer)
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
  "packages": {
    "": {
      "name": "JE-Skin",
-      "version": "0.3.0",
+      "version": "0.4.0",
      "license": "MIT",
      "dependencies": {
        "@tauri-apps/api": "^2",
@@ -625,9 +625,6 @@
        "arm"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -642,9 +639,6 @@
        "arm"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -659,9 +653,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -676,9 +667,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -693,9 +681,6 @@
        "loong64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -710,9 +695,6 @@
        "loong64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -727,9 +709,6 @@
        "ppc64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -744,9 +723,6 @@
        "ppc64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -761,9 +737,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -778,9 +751,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -795,9 +765,6 @@
        "s390x"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -812,9 +779,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -829,9 +793,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -1130,9 +1091,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1150,9 +1108,6 @@
        "arm64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1170,9 +1125,6 @@
        "riscv64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1190,9 +1142,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "glibc"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
@@ -1210,9 +1159,6 @@
        "x64"
      ],
      "dev": true,
-      "libc": [
-        "musl"
-      ],
      "license": "Apache-2.0 OR MIT",
      "optional": true,
      "os": [
--- a/src-tauri/.gitignore
+++ b/src-tauri/.gitignore
@@ -7,3 +7,14 @@
 # will have schema files for capabilities auto-completion
 /gen/schemas
 *log*
+
+# Android build artifacts
+/gen/android/app/build/
+/gen/android/build/
+/gen/android/.gradle/
+/gen/android/.tauri/
+/gen/android/local.properties
+/gen/android/key.properties
+/gen/android/keystore.properties
+/gen/android/tauri.settings.gradle
+/gen/android/app/src/main/jniLibs/
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -17,6 +17,7 @@ dependencies = [
 "fern",
 "futures-util",
 "humantime",
+ "libc",
 "log",
 "ndarray",
 "prost",
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -53,6 +53,8 @@ uuid = { version = "1", features = ["v4", "serde"] }
 rand = "0.8"
 reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
 ndarray = { version = "0.15", optional = true }
+[target.'cfg(target_os = "android")'.dependencies]
+libc = "0.2"

 [target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
 tauri-plugin-updater = "2"
--- a/src-tauri/capabilities/default.json
+++ b/src-tauri/capabilities/default.json
@@ -12,6 +12,12 @@
    "core:window:allow-start-dragging",
    "opener:default",
    "process:default",
-    "updater:default"
+    "allow-usb-serial-list",
+    "allow-usb-serial-open",
+    "allow-usb-serial-close",
+    "allow-usb-serial-list-camel",
+    "allow-usb-serial-open-camel",
+    "allow-usb-serial-close-camel",
+    "allow-local-commands"
  ]
 }
--- a/src-tauri/gen/android/.editorconfig
+++ b/src-tauri/gen/android/.editorconfig
@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = false
--- a/src-tauri/gen/android/.gitignore
+++ b/src-tauri/gen/android/.gitignore
@@ -0,0 +1,20 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+key.properties
+keystore.properties
+
+/.tauri
+/tauri.settings.gradle
--- a/src-tauri/gen/android/app/.gitignore
+++ b/src-tauri/gen/android/app/.gitignore
@@ -0,0 +1,6 @@
+/src/main/**/generated
+/src/main/jniLibs/**/*.so
+/src/main/assets/tauri.conf.json
+/tauri.build.gradle.kts
+/proguard-tauri.pro
+/tauri.properties
--- a/src-tauri/gen/android/app/build.gradle.kts
+++ b/src-tauri/gen/android/app/build.gradle.kts
@@ -0,0 +1,73 @@
+import java.util.Properties
+
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("rust")
+}
+
+val tauriProperties = Properties().apply {
+    val propFile = file("tauri.properties")
+    if (propFile.exists()) {
+        propFile.inputStream().use { load(it) }
+    }
+}
+
+android {
+    compileSdk = 36
+    namespace = "com.lenn.tauri_serial"
+    defaultConfig {
+        manifestPlaceholders["usesCleartextTraffic"] = "false"
+        applicationId = "com.lenn.tauri_serial"
+        minSdk = 24
+        targetSdk = 36
+        versionCode = tauriProperties.getProperty("tauri.android.versionCode", "1").toInt()
+        versionName = tauriProperties.getProperty("tauri.android.versionName", "1.0")
+    }
+    buildTypes {
+        getByName("debug") {
+            manifestPlaceholders["usesCleartextTraffic"] = "true"
+            isDebuggable = true
+            isJniDebuggable = true
+            isMinifyEnabled = false
+            packaging {                jniLibs.keepDebugSymbols.add("*/arm64-v8a/*.so")
+                jniLibs.keepDebugSymbols.add("*/armeabi-v7a/*.so")
+                jniLibs.keepDebugSymbols.add("*/x86/*.so")
+                jniLibs.keepDebugSymbols.add("*/x86_64/*.so")
+            }
+        }
+        getByName("release") {
+            isMinifyEnabled = true
+            proguardFiles(
+                *fileTree(".") { include("**/*.pro") }
+                    .plus(getDefaultProguardFile("proguard-android-optimize.txt"))
+                    .toList().toTypedArray()
+            )
+            signingConfig = signingConfigs.getByName("debug")
+        }
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    buildFeatures {
+        buildConfig = true
+    }
+}
+
+rust {
+    rootDirRel = "../../../"
+}
+
+dependencies {
+    implementation("androidx.webkit:webkit:1.14.0")
+    implementation("androidx.appcompat:appcompat:1.7.1")
+    implementation("androidx.activity:activity-ktx:1.10.1")
+    implementation("com.google.android.material:material:1.12.0")
+    implementation("androidx.lifecycle:lifecycle-process:2.10.0")
+    implementation("com.github.mik3y:usb-serial-for-android:3.9.0")
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test.ext:junit:1.1.4")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.0")
+}
+
+apply(from = "tauri.build.gradle.kts")
--- a/src-tauri/gen/android/app/je-skin-debug.keystore
+++ b/src-tauri/gen/android/app/je-skin-debug.keystore
--- a/src-tauri/gen/android/app/proguard-rules.pro
+++ b/src-tauri/gen/android/app/proguard-rules.pro
@@ -0,0 +1,34 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
+
+-keepattributes RuntimeVisibleAnnotations,RuntimeInvisibleAnnotations,*Annotation*,Signature,InnerClasses,EnclosingMethod
+
+-keep class app.tauri.annotation.** { *; }
+-keep class app.tauri.plugin.** { *; }
+
+-keep class com.lenn.tauri_serial.MainActivity { *; }
+-keep class com.lenn.tauri_serial.UsbSerialPlugin { *; }
+-keepclassmembers class com.lenn.tauri_serial.UsbSerialPlugin {
+    public *;
+}
+
+-keep class com.hoho.android.usbserial.** { *; }
--- a/src-tauri/gen/android/app/src/main/AndroidManifest.xml
+++ b/src-tauri/gen/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <!-- USB Host support for serial devices -->
+    <uses-feature android:name="android.hardware.usb.host" android:required="true" />
+
+    <!-- AndroidTV support -->
+    <uses-feature android:name="android.software.leanback" android:required="false" />
+
+    <application
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/Theme.je_skin"
+        android:usesCleartextTraffic="${usesCleartextTraffic}">
+        <activity
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode"
+            android:launchMode="singleTask"
+            android:label="@string/main_activity_title"
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+                <!-- AndroidTV support -->
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+            </intent-filter>
+            <!-- Auto-launch when USB device is attached -->
+            <intent-filter>
+                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
+            </intent-filter>
+            <meta-data
+                android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
+                android:resource="@xml/usb_device_filter" />
+        </activity>
+
+        <provider
+          android:name="androidx.core.content.FileProvider"
+          android:authorities="${applicationId}.fileprovider"
+          android:exported="false"
+          android:grantUriPermissions="true">
+          <meta-data
+            android:name="android.support.FILE_PROVIDER_PATHS"
+            android:resource="@xml/file_paths" />
+        </provider>
+    </application>
+</manifest>
--- a/src-tauri/gen/android/app/src/main/assets/resources/je-skin-devkit-server.exe
+++ b/src-tauri/gen/android/app/src/main/assets/resources/je-skin-devkit-server.exe
--- a/src-tauri/gen/android/app/src/main/java/com/lenn/tauri_serial/MainActivity.kt
+++ b/src-tauri/gen/android/app/src/main/java/com/lenn/tauri_serial/MainActivity.kt
@@ -0,0 +1,11 @@
+package com.lenn.tauri_serial
+
+import android.os.Bundle
+import androidx.activity.enableEdgeToEdge
+
+class MainActivity : TauriActivity() {
+  override fun onCreate(savedInstanceState: Bundle?) {
+    enableEdgeToEdge()
+    super.onCreate(savedInstanceState)
+  }
+}
--- a/src-tauri/gen/android/app/src/main/java/com/lenn/tauri_serial/UsbSerialPlugin.kt
+++ b/src-tauri/gen/android/app/src/main/java/com/lenn/tauri_serial/UsbSerialPlugin.kt
@@ -0,0 +1,388 @@
+package com.lenn.tauri_serial
+
+import android.app.Activity
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.hardware.usb.UsbDevice
+import android.hardware.usb.UsbDeviceConnection
+import android.hardware.usb.UsbManager
+import android.os.Build
+import android.os.ParcelFileDescriptor
+import android.system.Os
+import android.system.OsConstants
+import app.tauri.annotation.Command
+import app.tauri.annotation.TauriPlugin
+import app.tauri.plugin.Invoke
+import app.tauri.plugin.JSObject
+import app.tauri.plugin.Plugin
+import com.hoho.android.usbserial.driver.UsbSerialDriver
+import com.hoho.android.usbserial.driver.UsbSerialPort
+import com.hoho.android.usbserial.driver.UsbSerialProber
+import java.io.FileDescriptor
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.io.IOException
+import java.util.concurrent.atomic.AtomicBoolean
+import org.json.JSONArray
+
+@TauriPlugin
+class UsbSerialPlugin(private val activity: Activity) : Plugin(activity) {
+    companion object {
+        private const val ACTION_USB_PERMISSION = "com.lenn.tauri_serial.USB_PERMISSION"
+        private const val BAUD_RATE = 921600
+        private const val READ_TIMEOUT_MS = 100
+        private const val WRITE_TIMEOUT_MS = 100
+    }
+
+    private var pendingConnectInvoke: Invoke? = null
+    private var pendingConnectDeviceName: String? = null
+    private var activeBridge: SerialBridge? = null
+
+    private val usbPermissionReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context, intent: Intent) {
+            if (ACTION_USB_PERMISSION != intent.action) return
+
+            synchronized(this@UsbSerialPlugin) {
+                val device = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                    intent.getParcelableExtra(UsbManager.EXTRA_DEVICE, UsbDevice::class.java)
+                } else {
+                    @Suppress("DEPRECATION")
+                    intent.getParcelableExtra(UsbManager.EXTRA_DEVICE)
+                }
+
+                val granted = intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)
+                val invoke = pendingConnectInvoke
+                val targetDeviceName = pendingConnectDeviceName
+
+                pendingConnectInvoke = null
+                pendingConnectDeviceName = null
+
+                if (invoke == null || device == null) return
+
+                if (!granted) {
+                    invoke.reject("USB permission denied")
+                    return
+                }
+
+                if (targetDeviceName != null && device.deviceName == targetDeviceName) {
+                    openAndReturn(invoke, device.deviceName)
+                } else {
+                    invoke.reject("USB device mismatch")
+                }
+            }
+        }
+    }
+
+    override fun load(webView: android.webkit.WebView) {
+        super.load(webView)
+        val filter = IntentFilter(ACTION_USB_PERMISSION)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            activity.applicationContext.registerReceiver(
+                usbPermissionReceiver,
+                filter,
+                Context.RECEIVER_NOT_EXPORTED
+            )
+        } else {
+            activity.applicationContext.registerReceiver(usbPermissionReceiver, filter)
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        activeBridge?.close()
+        activeBridge = null
+        try {
+            activity.applicationContext.unregisterReceiver(usbPermissionReceiver)
+        } catch (_: Exception) {
+        }
+    }
+
+    @Command
+    fun usb_serial_list(invoke: Invoke) {
+        listDevices(invoke)
+    }
+
+    @Command
+    fun usbSerialList(invoke: Invoke) {
+        listDevices(invoke)
+    }
+
+    private fun listDevices(invoke: Invoke) {
+        val usbManager = activity.getSystemService(Context.USB_SERVICE) as? UsbManager
+        if (usbManager == null) {
+            invoke.reject("USB service not available")
+            return
+        }
+
+        val result = JSObject()
+        val serialDevices = JSONArray()
+
+        for (driver in UsbSerialProber.getDefaultProber().findAllDrivers(usbManager)) {
+            val device = driver.device
+            val obj = JSObject()
+            obj.put("name", device.deviceName)
+            obj.put("vendorId", device.vendorId)
+            obj.put("productId", device.productId)
+            obj.put("manufacturer", safeDeviceString { device.manufacturerName })
+            obj.put("product", safeDeviceString { device.productName })
+            obj.put("serial", safeDeviceString { device.serialNumber })
+            obj.put("hasPermission", usbManager.hasPermission(device))
+            serialDevices.put(obj)
+        }
+
+        result.put("devices", serialDevices)
+        invoke.resolve(result)
+    }
+
+    @Command
+    fun usb_serial_open(invoke: Invoke) {
+        openDevice(invoke)
+    }
+
+    @Command
+    fun usbSerialOpen(invoke: Invoke) {
+        openDevice(invoke)
+    }
+
+    private fun openDevice(invoke: Invoke) {
+        val args = invoke.parseArgs(JSObject::class.java)
+        val deviceName = args.optString("name", "")
+        val vendorId = if (args.has("vendorId")) args.optInt("vendorId") else null
+        val productId = if (args.has("productId")) args.optInt("productId") else null
+
+        val usbManager = activity.getSystemService(Context.USB_SERVICE) as? UsbManager
+        if (usbManager == null) {
+            invoke.reject("USB service not available")
+            return
+        }
+
+        val device = resolveDevice(usbManager, deviceName, vendorId, productId)
+        if (device == null) {
+            val available = usbManager.deviceList.values.joinToString(", ") { it.deviceName }
+            invoke.reject("USB device not found: $deviceName; available: $available")
+            return
+        }
+
+        if (!usbManager.hasPermission(device)) {
+            synchronized(this) {
+                pendingConnectInvoke = invoke
+                pendingConnectDeviceName = device.deviceName
+            }
+
+            val flags = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_MUTABLE
+            } else {
+                PendingIntent.FLAG_UPDATE_CURRENT
+            }
+            val permissionRequest = Intent(ACTION_USB_PERMISSION).setPackage(activity.packageName)
+            val permissionIntent = PendingIntent.getBroadcast(
+                activity,
+                0,
+                permissionRequest,
+                flags
+            )
+            usbManager.requestPermission(device, permissionIntent)
+            return
+        }
+
+        openAndReturn(invoke, device.deviceName)
+    }
+
+    @Command
+    fun usb_serial_close(invoke: Invoke) {
+        closeBridge()
+        invoke.resolve(JSObject())
+    }
+
+    @Command
+    fun usbSerialClose(invoke: Invoke) {
+        closeBridge()
+        invoke.resolve(JSObject())
+    }
+
+    private fun closeBridge() {
+        activeBridge?.close()
+        activeBridge = null
+    }
+
+    private fun openAndReturn(invoke: Invoke, deviceName: String) {
+        val usbManager = activity.getSystemService(Context.USB_SERVICE) as? UsbManager
+        if (usbManager == null) {
+            invoke.reject("USB service not available")
+            return
+        }
+
+        val driver = findDriver(usbManager, deviceName)
+        if (driver == null) {
+            invoke.reject("USB serial driver not found: $deviceName")
+            return
+        }
+
+        val connection = usbManager.openDevice(driver.device)
+        if (connection == null) {
+            invoke.reject("Failed to open USB device")
+            return
+        }
+
+        val port = driver.ports.firstOrNull()
+        if (port == null) {
+            connection.close()
+            invoke.reject("No serial port found on USB device")
+            return
+        }
+
+        try {
+            port.open(connection)
+            port.setParameters(
+                BAUD_RATE,
+                UsbSerialPort.DATABITS_8,
+                UsbSerialPort.STOPBITS_1,
+                UsbSerialPort.PARITY_NONE
+            )
+
+            val rustSide = FileDescriptor()
+            val bridgeSide = FileDescriptor()
+            Os.socketpair(OsConstants.AF_UNIX, OsConstants.SOCK_STREAM, 0, rustSide, bridgeSide)
+            val rustFd = ParcelFileDescriptor.dup(rustSide).detachFd()
+            Os.close(rustSide)
+
+            activeBridge?.close()
+            activeBridge = SerialBridge(bridgeSide, port, connection).also { it.start() }
+
+            val result = JSObject()
+            result.put("fd", rustFd)
+            result.put("name", driver.device.deviceName)
+            result.put("vendorId", driver.device.vendorId)
+            result.put("productId", driver.device.productId)
+            invoke.resolve(result)
+        } catch (error: Exception) {
+            try {
+                port.close()
+            } catch (_: Exception) {
+            }
+            connection.close()
+            invoke.reject(error.message ?: "Failed to open USB serial port")
+        }
+    }
+
+    private fun findDriver(usbManager: UsbManager, deviceName: String): UsbSerialDriver? {
+        return UsbSerialProber.getDefaultProber()
+            .findAllDrivers(usbManager)
+            .firstOrNull { it.device.deviceName == deviceName || it.device.deviceName.equals(deviceName, ignoreCase = true) }
+    }
+
+    private fun resolveDevice(
+        usbManager: UsbManager,
+        deviceName: String,
+        vendorId: Int?,
+        productId: Int?
+    ): UsbDevice? {
+        usbManager.deviceList[deviceName]?.let { return it }
+
+        val devices = usbManager.deviceList.values.toList()
+        devices.firstOrNull { it.deviceName.equals(deviceName, ignoreCase = true) }?.let { return it }
+
+        if (vendorId != null && productId != null) {
+            devices.firstOrNull { it.vendorId == vendorId && it.productId == productId }?.let { return it }
+        }
+
+        val drivers = UsbSerialProber.getDefaultProber().findAllDrivers(usbManager)
+        drivers.firstOrNull {
+            it.device.deviceName == deviceName || it.device.deviceName.equals(deviceName, ignoreCase = true)
+        }?.device?.let { return it }
+
+        if (drivers.size == 1) {
+            return drivers.first().device
+        }
+
+        if (devices.size == 1) {
+            return devices.first()
+        }
+
+        return null
+    }
+
+    private fun safeDeviceString(read: () -> String?): String {
+        return try {
+            read() ?: ""
+        } catch (_: SecurityException) {
+            ""
+        }
+    }
+
+    private class SerialBridge(
+        private val bridgeFd: FileDescriptor,
+        private val port: UsbSerialPort,
+        private val connection: UsbDeviceConnection
+    ) {
+        private val running = AtomicBoolean(false)
+        private lateinit var serialToRustThread: Thread
+        private lateinit var rustToSerialThread: Thread
+
+        fun start() {
+            running.set(true)
+            serialToRustThread = Thread(::copySerialToRust, "JE-Skin-usb-serial-rx")
+            rustToSerialThread = Thread(::copyRustToSerial, "JE-Skin-usb-serial-tx")
+            serialToRustThread.start()
+            rustToSerialThread.start()
+        }
+
+        fun close() {
+            if (!running.getAndSet(false)) return
+
+            try {
+                Os.close(bridgeFd)
+            } catch (_: Exception) {
+            }
+            try {
+                port.close()
+            } catch (_: Exception) {
+            }
+            connection.close()
+        }
+
+        private fun copySerialToRust() {
+            val output = FileOutputStream(bridgeFd)
+            val buffer = ByteArray(4096)
+
+            while (running.get()) {
+                try {
+                    val count = port.read(buffer, READ_TIMEOUT_MS)
+                    if (count > 0) {
+                        output.write(buffer, 0, count)
+                        output.flush()
+                    }
+                } catch (_: IOException) {
+                    close()
+                } catch (_: Exception) {
+                    close()
+                }
+            }
+        }
+
+        private fun copyRustToSerial() {
+            val input = FileInputStream(bridgeFd)
+            val buffer = ByteArray(4096)
+
+            while (running.get()) {
+                try {
+                    val count = input.read(buffer)
+                    if (count < 0) {
+                        close()
+                        return
+                    }
+                    if (count > 0) {
+                        port.write(buffer.copyOf(count), WRITE_TIMEOUT_MS)
+                    }
+                } catch (_: IOException) {
+                    close()
+                } catch (_: Exception) {
+                    close()
+                }
+            }
+        }
+    }
+}
--- a/src-tauri/gen/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
+++ b/src-tauri/gen/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
--- a/src-tauri/gen/android/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/src-tauri/gen/android/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?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="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
--- a/src-tauri/gen/android/app/src/main/res/layout/activity_main.xml
+++ b/src-tauri/gen/android/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
--- a/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
+++ b/src-tauri/gen/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
--- a/src-tauri/gen/android/app/src/main/res/values-night/themes.xml
+++ b/src-tauri/gen/android/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,6 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.je_skin" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
--- a/src-tauri/gen/android/app/src/main/res/values/colors.xml
+++ b/src-tauri/gen/android/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
--- a/src-tauri/gen/android/app/src/main/res/values/strings.xml
+++ b/src-tauri/gen/android/app/src/main/res/values/strings.xml
@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name">JE-Skin</string>
+    <string name="main_activity_title">JE-Skin</string>
+</resources>
--- a/src-tauri/gen/android/app/src/main/res/values/themes.xml
+++ b/src-tauri/gen/android/app/src/main/res/values/themes.xml
@@ -0,0 +1,6 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.je_skin" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
--- a/src-tauri/gen/android/app/src/main/res/xml/file_paths.xml
+++ b/src-tauri/gen/android/app/src/main/res/xml/file_paths.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+  <external-path name="my_images" path="." />
+  <cache-path name="my_cache_images" path="." />
+</paths>
--- a/src-tauri/gen/android/app/src/main/res/xml/usb_device_filter.xml
+++ b/src-tauri/gen/android/app/src/main/res/xml/usb_device_filter.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- CH340 / CH341 USB-Serial -->
+    <usb-device vendor-id="1a86" product-id="7523" />
+    <!-- CP2102 / CP2104 -->
+    <usb-device vendor-id="10c4" product-id="ea60" />
+    <usb-device vendor-id="10c4" product-id="ea70" />
+    <!-- FTDI FT232R / FT232H -->
+    <usb-device vendor-id="0403" product-id="6001" />
+    <usb-device vendor-id="0403" product-id="6014" />
+    <!-- PL2303 -->
+    <usb-device vendor-id="067b" product-id="2303" />
+    <usb-device vendor-id="067b" product-id="23a3" />
+    <!-- CDC ACM (generic USB serial) -->
+    <usb-device vendor-id="2341" product-id="0001" />
+    <usb-device vendor-id="2341" product-id="0043" />
+    <usb-device vendor-id="2341" product-id="0042" />
+    <!-- Allow any USB device (catch-all) -->
+    <usb-device />
+</resources>
--- a/src-tauri/gen/android/build.gradle.kts
+++ b/src-tauri/gen/android/build.gradle.kts
@@ -0,0 +1,22 @@
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath("com.android.tools.build:gradle:8.11.0")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.25")
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        maven(url = "https://jitpack.io")
+    }
+}
+
+tasks.register("clean").configure {
+    delete("build")
+}
--- a/src-tauri/gen/android/buildSrc/build.gradle.kts
+++ b/src-tauri/gen/android/buildSrc/build.gradle.kts
@@ -0,0 +1,23 @@
+plugins {
+    `kotlin-dsl`
+}
+
+gradlePlugin {
+    plugins {
+        create("pluginsForCoolKids") {
+            id = "rust"
+            implementationClass = "RustPlugin"
+        }
+    }
+}
+
+repositories {
+    google()
+    mavenCentral()
+}
+
+dependencies {
+    compileOnly(gradleApi())
+    implementation("com.android.tools.build:gradle:8.11.0")
+}
+
--- a/src-tauri/gen/android/buildSrc/src/main/java/com/lenn/tauri_serial/kotlin/BuildTask.kt
+++ b/src-tauri/gen/android/buildSrc/src/main/java/com/lenn/tauri_serial/kotlin/BuildTask.kt
@@ -0,0 +1,68 @@
+import java.io.File
+import org.apache.tools.ant.taskdefs.condition.Os
+import org.gradle.api.DefaultTask
+import org.gradle.api.GradleException
+import org.gradle.api.logging.LogLevel
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.TaskAction
+
+open class BuildTask : DefaultTask() {
+    @Input
+    var rootDirRel: String? = null
+    @Input
+    var target: String? = null
+    @Input
+    var release: Boolean? = null
+
+    @TaskAction
+    fun assemble() {
+        val executable = """cargo""";
+        try {
+            runTauriCli(executable)
+        } catch (e: Exception) {
+            if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+                // Try different Windows-specific extensions
+                val fallbacks = listOf(
+                    "$executable.exe",
+                    "$executable.cmd",
+                    "$executable.bat",
+                )
+                
+                var lastException: Exception = e
+                for (fallback in fallbacks) {
+                    try {
+                        runTauriCli(fallback)
+                        return
+                    } catch (fallbackException: Exception) {
+                        lastException = fallbackException
+                    }
+                }
+                throw lastException
+            } else {
+                throw e;
+            }
+        }
+    }
+
+    fun runTauriCli(executable: String) {
+        val rootDirRel = rootDirRel ?: throw GradleException("rootDirRel cannot be null")
+        val target = target ?: throw GradleException("target cannot be null")
+        val release = release ?: throw GradleException("release cannot be null")
+        val args = listOf("tauri", "android", "android-studio-script");
+
+        project.exec {
+            workingDir(File(project.projectDir, rootDirRel))
+            executable(executable)
+            args(args)
+            if (project.logger.isEnabled(LogLevel.DEBUG)) {
+                args("-vv")
+            } else if (project.logger.isEnabled(LogLevel.INFO)) {
+                args("-v")
+            }
+            if (release) {
+                args("--release")
+            }
+            args(listOf("--target", target))
+        }.assertNormalExitValue()
+    }
+}
--- a/src-tauri/gen/android/buildSrc/src/main/java/com/lenn/tauri_serial/kotlin/RustPlugin.kt
+++ b/src-tauri/gen/android/buildSrc/src/main/java/com/lenn/tauri_serial/kotlin/RustPlugin.kt
@@ -0,0 +1,85 @@
+import com.android.build.api.dsl.ApplicationExtension
+import org.gradle.api.DefaultTask
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.configure
+import org.gradle.kotlin.dsl.get
+
+const val TASK_GROUP = "rust"
+
+open class Config {
+    lateinit var rootDirRel: String
+}
+
+open class RustPlugin : Plugin<Project> {
+    private lateinit var config: Config
+
+    override fun apply(project: Project) = with(project) {
+        config = extensions.create("rust", Config::class.java)
+
+        val defaultAbiList = listOf("arm64-v8a", "armeabi-v7a", "x86", "x86_64");
+        val abiList = (findProperty("abiList") as? String)?.split(',') ?: defaultAbiList
+
+        val defaultArchList = listOf("arm64", "arm", "x86", "x86_64");
+        val archList = (findProperty("archList") as? String)?.split(',') ?: defaultArchList
+
+        val targetsList = (findProperty("targetList") as? String)?.split(',') ?: listOf("aarch64", "armv7", "i686", "x86_64")
+
+        extensions.configure<ApplicationExtension> {
+            @Suppress("UnstableApiUsage")
+            flavorDimensions.add("abi")
+            productFlavors {
+                create("universal") {
+                    dimension = "abi"
+                    ndk {
+                        abiFilters += abiList
+                    }
+                }
+                defaultArchList.forEachIndexed { index, arch ->
+                    create(arch) {
+                        dimension = "abi"
+                        ndk {
+                            abiFilters.add(defaultAbiList[index])
+                        }
+                    }
+                }
+            }
+        }
+
+        afterEvaluate {
+            for (profile in listOf("debug", "release")) {
+                val profileCapitalized = profile.replaceFirstChar { it.uppercase() }
+                val buildTask = tasks.maybeCreate(
+                    "rustBuildUniversal$profileCapitalized",
+                    DefaultTask::class.java
+                ).apply {
+                    group = TASK_GROUP
+                    description = "Build dynamic library in $profile mode for all targets"
+                }
+
+                tasks["mergeUniversal${profileCapitalized}JniLibFolders"].dependsOn(buildTask)
+
+                for (targetPair in targetsList.withIndex()) {
+                    val targetName = targetPair.value
+                    val targetArch = archList[targetPair.index]
+                    val targetArchCapitalized = targetArch.replaceFirstChar { it.uppercase() }
+                    val targetBuildTask = project.tasks.maybeCreate(
+                        "rustBuild$targetArchCapitalized$profileCapitalized",
+                        BuildTask::class.java
+                    ).apply {
+                        group = TASK_GROUP
+                        description = "Build dynamic library in $profile mode for $targetArch"
+                        rootDirRel = config.rootDirRel
+                        target = targetName
+                        release = profile == "release"
+                    }
+
+                    buildTask.dependsOn(targetBuildTask)
+                    tasks["merge$targetArchCapitalized${profileCapitalized}JniLibFolders"].dependsOn(
+                        targetBuildTask
+                    )
+                }
+            }
+        }
+    }
+}
--- a/src-tauri/gen/android/gradle.properties
+++ b/src-tauri/gen/android/gradle.properties
@@ -0,0 +1,24 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
+android.nonFinalResIds=false
--- a/src-tauri/gen/android/gradle/wrapper/gradle-wrapper.jar
+++ b/src-tauri/gen/android/gradle/wrapper/gradle-wrapper.jar
--- a/src-tauri/gen/android/gradle/wrapper/gradle-wrapper.properties
+++ b/src-tauri/gen/android/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue May 10 19:22:52 CST 2022
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
--- a/src-tauri/gen/android/gradlew
+++ b/src-tauri/gen/android/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or 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 UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
--- a/src-tauri/gen/android/gradlew.bat
+++ b/src-tauri/gen/android/gradlew.bat
@@ -0,0 +1,89 @@
+@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=.
+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%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+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%"=="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!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/src-tauri/gen/android/settings.gradle
+++ b/src-tauri/gen/android/settings.gradle
@@ -0,0 +1,3 @@
+include ':app'
+
+apply from: 'tauri.settings.gradle'
--- a/src-tauri/permissions/usb-serial/default.toml
+++ b/src-tauri/permissions/usb-serial/default.toml
@@ -0,0 +1,66 @@
+[default]
+description = "Allows Android USB serial plugin commands."
+permissions = [
+  "allow-usb-serial-list",
+  "allow-usb-serial-open",
+  "allow-usb-serial-close",
+  "allow-usb-serial-list-camel",
+  "allow-usb-serial-open-camel",
+  "allow-usb-serial-close-camel",
+  "allow-local-commands"
+]
+
+[[permission]]
+identifier = "allow-usb-serial-list"
+description = "Allows listing Android USB serial devices."
+commands.allow = ["plugin:usb-serial|usb_serial_list"]
+
+[[permission]]
+identifier = "allow-usb-serial-open"
+description = "Allows opening Android USB serial devices."
+commands.allow = ["plugin:usb-serial|usb_serial_open"]
+
+[[permission]]
+identifier = "allow-usb-serial-close"
+description = "Allows closing Android USB serial devices."
+commands.allow = ["plugin:usb-serial|usb_serial_close"]
+
+[[permission]]
+identifier = "allow-usb-serial-list-camel"
+description = "Allows listing Android USB serial devices via camelCase command."
+commands.allow = ["plugin:usb-serial|usbSerialList"]
+
+[[permission]]
+identifier = "allow-usb-serial-open-camel"
+description = "Allows opening Android USB serial devices via camelCase command."
+commands.allow = ["plugin:usb-serial|usbSerialOpen"]
+
+[[permission]]
+identifier = "allow-usb-serial-close-camel"
+description = "Allows closing Android USB serial devices via camelCase command."
+commands.allow = ["plugin:usb-serial|usbSerialClose"]
+
+[[permission]]
+identifier = "allow-local-commands"
+description = "Allows application commands used by the Android frontend."
+commands.allow = [
+  "file_explorer_list",
+  "serial_enum",
+  "serial_connect",
+  "serial_connect_fd",
+  "serial_disconnect",
+  "serial_export_csv",
+  "serial_has_record_data",
+  "serial_export_csv_to_path",
+  "serial_import_csv",
+  "serial_import_csv_from_path",
+  "win_minimize",
+  "win_toggle_maximize",
+  "win_close",
+  "devkit_status",
+  "devkit_start",
+  "devkit_stop",
+  "devkit_get_config",
+  "devkit_set_config",
+  "devkit_process_export"
+]
--- a/src-tauri/plugins/usb-serial-plugin.json
+++ b/src-tauri/plugins/usb-serial-plugin.json
@@ -0,0 +1,9 @@
+{
+  "plugins": {
+    "usb-serial": {
+      "android": {
+        "package": "com.lenn.tauri_serial.UsbSerialPlugin"
+      }
+    }
+  }
+}
--- a/src-tauri/src/commands/file_explorer.rs
+++ b/src-tauri/src/commands/file_explorer.rs
@@ -141,6 +141,7 @@ fn resolve_start_path(app: &AppHandle, raw_path: Option<String>) -> Result<PathB
 }

 fn resolve_default_path(app: &AppHandle) -> Result<PathBuf, String> {
+    #[cfg(not(target_os = "android"))]
    if let Ok(path) = app.path().desktop_dir() {
        return Ok(path);
    }
@@ -175,6 +176,7 @@ fn collect_roots(app: &AppHandle) -> Vec<FileExplorerRoot> {
        }
    };

+    #[cfg(not(target_os = "android"))]
    if let Ok(path) = app.path().desktop_dir() {
        push_root("Desktop", path);
    }
--- a/src-tauri/src/commands/serial.rs
+++ b/src-tauri/src/commands/serial.rs
@@ -13,6 +13,7 @@ use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
 use tauri::{async_runtime::JoinHandle, AppHandle, Manager, State};
+#[cfg(not(target_os = "android"))]
 use tokio_serial::{available_ports, SerialPortBuilderExt};
 use tokio_util::sync::CancellationToken;

@@ -113,6 +114,13 @@ pub async fn shutdown_active_session(

 #[tauri::command]
 pub fn serial_enum() -> Result<Vec<String>, SerialError> {
+    #[cfg(target_os = "android")]
+    {
+        Ok(Vec::new())
+    }
+
+    #[cfg(not(target_os = "android"))]
+    {
        let ports = available_ports()
            .map_err(|_| SerialError::ScanError)?
            .into_iter()
@@ -127,8 +135,10 @@ pub fn serial_enum() -> Result<Vec<String>, SerialError> {
            .collect();

        Ok(ports)
+    }
 }

+#[cfg(not(target_os = "android"))]
 #[tauri::command]
 pub async fn serial_connect(
    app: AppHandle,
@@ -246,15 +256,122 @@ pub async fn serial_disconnect(
    })
 }

+#[cfg(target_os = "android")]
+#[tauri::command]
+pub async fn serial_connect_fd(
+    app: AppHandle,
+    fd: i32,
+    device_name: String,
+    state: State<'_, SerialConnectionState>,
+) -> Result<SerialConnectResponse, SerialError> {
+    if fd < 0 {
+        return Err(SerialError::InvalidConfig);
+    }
+
+    {
+        let session = state.session.lock().map_err(|_| SerialError::StateError)?;
+        if session.is_some() {
+            return Err(SerialError::AlreadyConnected);
+        }
+    }
+
+    let cancel = CancellationToken::new();
+    let current_record = Arc::new(Mutex::new(TactileARecording::new()));
+    let task_record = current_record.clone();
+    let task_cancel = cancel.clone();
+    let task_app = app.clone();
+    let task_port_name = device_name.clone();
+
+    let port = crate::serial_core::raw_fd_stream::RawFdStream::new(fd)
+        .map_err(|_| SerialError::OpenError)?;
+    let session_started_at = Instant::now();
+
+    let task = tauri::async_runtime::spawn(async move {
+        let codec = TactileACodec::new(DEFAULT_TACTILE_COLS, DEFAULT_TACTILE_ROWS);
+        let handler = TactileAHandler;
+        let poll_mode = PollMode::Enabled(Box::new(TactileAPollRequester::new(
+            Duration::from_millis(DEFAULT_TACTILE_POLL_INTERVAL_MS),
+            DEFAULT_TACTILE_COLS,
+            DEFAULT_TACTILE_ROWS,
+            Duration::from_millis(DEFAULT_TACTILE_REPLY_TIMEOUT_MS),
+        )));
+
+        if let Err(error) = serial::run_serial_with_poll(
+            task_app.clone(),
+            port,
+            codec,
+            handler,
+            session_started_at,
+            task_record.clone(),
+            task_cancel,
+            poll_mode,
+        )
+        .await
+        {
+            eprintln!("serial task exited with error: {error}");
+        }
+
+        let manager = task_app.state::<SerialConnectionState>();
+        if let Ok(mut last_record) = manager.last_record.lock() {
+            *last_record = Some(task_record);
+        }
+
+        let mut session = match manager.session.lock() {
+            Ok(session) => session,
+            Err(_) => return,
+        };
+
+        {
+            let should_clear = session
+                .as_ref()
+                .map(|current| current.port.as_str() == task_port_name.as_str())
+                .unwrap_or(false);
+
+            if should_clear {
+                session.take();
+            }
+        }
+    });
+
+    let mut session = state.session.lock().map_err(|_| SerialError::StateError)?;
+    if session.is_some() {
+        cancel.cancel();
+        task.abort();
+        return Err(SerialError::AlreadyConnected);
+    }
+
+    *session = Some(SerialSession {
+        port: device_name.clone(),
+        cancel,
+        task,
+        current_record,
+    });
+
+    Ok(SerialConnectResponse {
+        port: device_name,
+        connected: true,
+        message: "connected".to_string(),
+    })
+}
+
 #[tauri::command]
 pub fn serial_export_csv(
    app: AppHandle,
    state: State<'_, SerialConnectionState>,
 ) -> Result<SerialExportResponse, SerialError> {
+    #[cfg(not(target_os = "android"))]
    let mut output_dir = match app.path().desktop_dir() {
        Ok(path) => path,
        Err(_) => std::env::current_dir().map_err(|_| SerialError::ExportError)?,
    };
+    #[cfg(target_os = "android")]
+    let mut output_dir = match app.path().download_dir() {
+        Ok(path) => path,
+        Err(_) => app.path().document_dir()
+            .or_else(|_| app.path().home_dir())
+            .or_else(|_| std::env::current_dir())
+            .map_err(|_| SerialError::ExportError)?,
+    };

    let timestamp = SystemTime::now()
        .duration_since(UNIX_EPOCH)
--- a/src-tauri/src/commands/window.rs
+++ b/src-tauri/src/commands/window.rs
@@ -9,13 +9,23 @@ fn main_window(app: &AppHandle) -> Result<WebviewWindow, String> {

 #[tauri::command]
 pub fn win_minimize(app: AppHandle) -> Result<(), String> {
+    #[cfg(not(target_os = "android"))]
+    {
        main_window(&app)?
            .minimize()
            .map_err(|error| error.to_string())
+    }
+    #[cfg(target_os = "android")]
+    {
+        let _ = app;
+        Ok(())
+    }
 }

 #[tauri::command]
 pub fn win_toggle_maximize(app: AppHandle) -> Result<(), String> {
+    #[cfg(not(target_os = "android"))]
+    {
        let window = main_window(&app)?;
        let is_maximized = window.is_maximized().map_err(|error| error.to_string())?;

@@ -24,6 +34,12 @@ pub fn win_toggle_maximize(app: AppHandle) -> Result<(), String> {
        } else {
            window.maximize().map_err(|error| error.to_string())
        }
+    }
+    #[cfg(target_os = "android")]
+    {
+        let _ = app;
+        Ok(())
+    }
 }

 #[tauri::command]
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -10,6 +10,16 @@ use commands::serial::SerialConnectionState;
 #[cfg(feature = "devkit")]
 use tauri::Manager;

+#[cfg(target_os = "android")]
+fn usb_serial_plugin<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
+    tauri::plugin::Builder::new("usb-serial")
+        .setup(|_app, api| {
+            api.register_android_plugin("com.lenn.tauri_serial", "UsbSerialPlugin")?;
+            Ok(())
+        })
+        .build()
+}
+
 #[cfg(feature = "devkit")]
 fn start_server_exe(exe_path: &std::path::Path) {
    let mut command = std::process::Command::new(exe_path);
@@ -66,6 +76,9 @@ pub fn run() {
        .manage(SerialConnectionState::default())
        .plugin(tauri_plugin_opener::init());

+    #[cfg(target_os = "android")]
+    let builder = builder.plugin(usb_serial_plugin());
+
    #[cfg(not(any(target_os = "android", target_os = "ios")))]
    let builder = builder.plugin(tauri_plugin_updater::Builder::new().build());

@@ -135,7 +148,7 @@ pub fn run() {
        Ok(())
    });

-    #[cfg(feature = "devkit")]
+    #[cfg(all(feature = "devkit", not(target_os = "android")))]
    let builder = builder.invoke_handler(tauri::generate_handler![
        commands::file_explorer::file_explorer_list,
        commands::serial::serial_enum,
@@ -157,7 +170,7 @@ pub fn run() {
        commands::devkit::devkit_process_export
    ]);

-    #[cfg(not(feature = "devkit"))]
+    #[cfg(all(not(feature = "devkit"), not(target_os = "android")))]
    let builder = builder.invoke_handler(tauri::generate_handler![
        commands::file_explorer::file_explorer_list,
        commands::serial::serial_enum,
@@ -173,6 +186,44 @@ pub fn run() {
        commands::window::win_close
    ]);

+    #[cfg(all(feature = "devkit", target_os = "android"))]
+    let builder = builder.invoke_handler(tauri::generate_handler![
+        commands::file_explorer::file_explorer_list,
+        commands::serial::serial_enum,
+        commands::serial::serial_connect_fd,
+        commands::serial::serial_disconnect,
+        commands::serial::serial_export_csv,
+        commands::serial::serial_has_record_data,
+        commands::serial::serial_export_csv_to_path,
+        commands::serial::serial_import_csv,
+        commands::serial::serial_import_csv_from_path,
+        commands::window::win_minimize,
+        commands::window::win_toggle_maximize,
+        commands::window::win_close,
+        commands::devkit::devkit_status,
+        commands::devkit::devkit_start,
+        commands::devkit::devkit_stop,
+        commands::devkit::devkit_get_config,
+        commands::devkit::devkit_set_config,
+        commands::devkit::devkit_process_export
+    ]);
+
+    #[cfg(all(not(feature = "devkit"), target_os = "android"))]
+    let builder = builder.invoke_handler(tauri::generate_handler![
+        commands::file_explorer::file_explorer_list,
+        commands::serial::serial_enum,
+        commands::serial::serial_connect_fd,
+        commands::serial::serial_disconnect,
+        commands::serial::serial_export_csv,
+        commands::serial::serial_has_record_data,
+        commands::serial::serial_export_csv_to_path,
+        commands::serial::serial_import_csv,
+        commands::serial::serial_import_csv_from_path,
+        commands::window::win_minimize,
+        commands::window::win_toggle_maximize,
+        commands::window::win_close
+    ]);
+
    builder
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
--- a/src-tauri/src/serial_core/mod.rs
+++ b/src-tauri/src/serial_core/mod.rs
@@ -11,6 +11,8 @@ pub mod model;
 pub mod serial;
 pub mod record;
 pub mod utils;
+#[cfg(target_os = "android")]
+pub mod raw_fd_stream;
 #[cfg(feature = "multi-dim")]
 pub mod multi_dim_force;

--- a/src-tauri/src/serial_core/raw_fd_stream.rs
+++ b/src-tauri/src/serial_core/raw_fd_stream.rs
@@ -0,0 +1,127 @@
+use std::io;
+use std::os::unix::io::RawFd;
+use tokio::io::unix::AsyncFd;
+use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
+
+/// A wrapper around a raw file descriptor that implements AsyncRead + AsyncWrite.
+/// Uses tokio's AsyncFd to properly integrate with the async reactor.
+/// Used on Android to wrap USB device file descriptors obtained from the USB Host API.
+pub struct RawFdStream {
+    inner: AsyncFd<RawFd>,
+}
+
+impl RawFdStream {
+    pub fn new(fd: RawFd) -> io::Result<Self> {
+        if fd < 0 {
+            return Err(io::Error::new(io::ErrorKind::InvalidInput, "invalid fd"));
+        }
+
+        // Set non-blocking
+        unsafe {
+            let flags = libc::fcntl(fd, libc::F_GETFL);
+            if flags < 0 {
+                return Err(io::Error::last_os_error());
+            }
+            if libc::fcntl(fd, libc::F_SETFL, flags | libc::O_NONBLOCK) < 0 {
+                return Err(io::Error::last_os_error());
+            }
+        }
+
+        let inner = AsyncFd::new(fd)?;
+        Ok(Self { inner })
+    }
+}
+
+impl Drop for RawFdStream {
+    fn drop(&mut self) {
+        unsafe {
+            libc::close(*self.inner.get_ref());
+        }
+    }
+}
+
+impl AsyncRead for RawFdStream {
+    fn poll_read(
+        self: std::pin::Pin<&mut Self>,
+        cx: &mut std::task::Context<'_>,
+        buf: &mut ReadBuf<'_>,
+    ) -> std::task::Poll<io::Result<()>> {
+        loop {
+            let mut guard = match self.inner.poll_read_ready(cx) {
+                std::task::Poll::Ready(Ok(guard)) => guard,
+                std::task::Poll::Ready(Err(e)) => return std::task::Poll::Ready(Err(e)),
+                std::task::Poll::Pending => return std::task::Poll::Pending,
+            };
+
+            let unfilled = buf.initialize_unfilled();
+            let result = unsafe {
+                libc::read(
+                    *self.inner.get_ref(),
+                    unfilled.as_mut_ptr() as *mut libc::c_void,
+                    unfilled.len(),
+                )
+            };
+
+            if result < 0 {
+                let err = io::Error::last_os_error();
+                if err.kind() == io::ErrorKind::WouldBlock {
+                    guard.clear_ready();
+                    continue;
+                }
+                return std::task::Poll::Ready(Err(err));
+            }
+
+            buf.advance(result as usize);
+            return std::task::Poll::Ready(Ok(()));
+        }
+    }
+}
+
+impl AsyncWrite for RawFdStream {
+    fn poll_write(
+        self: std::pin::Pin<&mut Self>,
+        cx: &mut std::task::Context<'_>,
+        buf: &[u8],
+    ) -> std::task::Poll<io::Result<usize>> {
+        loop {
+            let mut guard = match self.inner.poll_write_ready(cx) {
+                std::task::Poll::Ready(Ok(guard)) => guard,
+                std::task::Poll::Ready(Err(e)) => return std::task::Poll::Ready(Err(e)),
+                std::task::Poll::Pending => return std::task::Poll::Pending,
+            };
+
+            let result = unsafe {
+                libc::write(
+                    *self.inner.get_ref(),
+                    buf.as_ptr() as *const libc::c_void,
+                    buf.len(),
+                )
+            };
+
+            if result < 0 {
+                let err = io::Error::last_os_error();
+                if err.kind() == io::ErrorKind::WouldBlock {
+                    guard.clear_ready();
+                    continue;
+                }
+                return std::task::Poll::Ready(Err(err));
+            }
+
+            return std::task::Poll::Ready(Ok(result as usize));
+        }
+    }
+
+    fn poll_flush(
+        self: std::pin::Pin<&mut Self>,
+        _cx: &mut std::task::Context<'_>,
+    ) -> std::task::Poll<io::Result<()>> {
+        std::task::Poll::Ready(Ok(()))
+    }
+
+    fn poll_shutdown(
+        self: std::pin::Pin<&mut Self>,
+        _cx: &mut std::task::Context<'_>,
+    ) -> std::task::Poll<io::Result<()>> {
+        std::task::Poll::Ready(Ok(()))
+    }
+}
--- a/src-tauri/src/serial_core/serial.rs
+++ b/src-tauri/src/serial_core/serial.rs
@@ -18,8 +18,9 @@ use std::time::Instant;
 use tauri::{AppHandle, Emitter};
 #[cfg(feature = "devkit")]
 use tauri::Manager;
-use tokio::io::{AsyncReadExt, AsyncWriteExt};
+use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
 use tokio::time::{self, Duration, MissedTickBehavior};
+#[cfg(not(target_os = "android"))]
 use tokio_serial::SerialStream;
 use tokio_util::sync::CancellationToken;

@@ -171,6 +172,7 @@ impl PollRequester<TactileAFrame> for TactileAPollRequester {
    }
 }

+#[cfg(not(target_os = "android"))]
 pub async fn run_serial<C, H, T, F>(
    app: AppHandle,
    port: SerialStream,
@@ -201,7 +203,7 @@ where

 pub async fn run_serial_with_poll<C, H, T, F>(
    app: AppHandle,
-    mut port: SerialStream,
+    mut port: impl AsyncRead + AsyncWrite + Unpin,
    mut codec: C,
    mut handler: H,
    session_started_at: Instant,
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -45,15 +45,5 @@
      "resources/je-skin-devkit-server.exe"
    ]
  },
-  "plugins": {
-    "updater": {
-      "windows": {
-        "installMode": "passive"
-      },
-      "pubkey": "dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IDkwODM1QkFEODI2NkZENgpSV1RXYnliWXVqVUlDUVRxbjlseDNDNjhQTGpDYis4TEZMeUk2WVhiMEhTRWJhN3hGRnQ3TTJtcwo=",
-      "endpoints": [
-        "https://je-skin.cn-nb1.rains3.com/latest.json"
-      ]
-    }
-  }
+  "plugins": {}
 }
--- a/src/lib/components/HudPanel.svelte
+++ b/src/lib/components/HudPanel.svelte
@@ -460,6 +460,12 @@
    color: rgb(var(--hud-orange-rgb) / 0.96);
  }

+  @media (max-width: 900px) {
+    .window-controls {
+      display: none;
+    }
+  }
+
  .control-bar {
    display: grid;
    gap: 0.45rem;
--- a/src/lib/components/PressureMatrixViewer.svelte
+++ b/src/lib/components/PressureMatrixViewer.svelte
@@ -461,6 +461,28 @@
    const heightField = new Float32Array(instanceCount);
    const compactField = new Uint16Array(instanceCount);
    let lastFrameAt = performance.now();
+    let lastStatsCurrent: number | null = null;
+    let lastStatsMax: number | null = null;
+    let lastStatsMin: number | null = null;
+
+    const syncStats = () => {
+      const nextCurrent = summary?.latest ?? null;
+      const nextMax = summary?.max ?? null;
+      const nextMin = summary?.min ?? null;
+
+      if (nextCurrent === lastStatsCurrent && nextMax === lastStatsMax && nextMin === lastStatsMin) {
+        return;
+      }
+
+      lastStatsCurrent = nextCurrent;
+      lastStatsMax = nextMax;
+      lastStatsMin = nextMin;
+      stats = {
+        current: nextCurrent,
+        max: nextMax,
+        min: nextMin
+      };
+    };

    const drawOverlay = () => {
      if (!viewerEl || !overlayEl) {
@@ -623,12 +645,7 @@

      renderer.render(scene, camera);
      drawOverlay();
-
-      stats = {
-        current: summary?.latest ?? null,
-        max: summary?.max ?? null,
-        min: summary?.min ?? null
-      };
+      syncStats();
    });

    return () => {
--- a/src/lib/components/SignalChart.svelte
+++ b/src/lib/components/SignalChart.svelte
@@ -182,8 +182,7 @@
    transition:
      opacity var(--fade-ms) cubic-bezier(0.18, 0.88, 0.3, 1),
      transform var(--enter-ms) cubic-bezier(0.2, 0.9, 0.28, 1),
-      border-color 460ms ease,
-      filter 760ms ease;
+      border-color 460ms ease;
    transition-delay: calc(var(--panel-index) * 140ms);
  }

@@ -200,7 +199,6 @@
    border-color: transparent;
    opacity: 0;
    transform: translateX(var(--offset-x)) scale(0.98) rotate(-0.6deg);
-    filter: blur(1.3px);
    pointer-events: none;
    transition-delay: 0ms;
  }
@@ -301,7 +299,6 @@
    stroke-width: 1.3;
    stroke-linecap: round;
    stroke-linejoin: round;
-    filter: drop-shadow(0 0 2px rgb(0 0 0 / 0.42));
  }

  .series-line.tone-cyan {
@@ -397,6 +394,10 @@
      aspect-ratio: 1.5 / 1;
      min-block-size: 10.1rem;
    }
+
+    .chart-stage {
+      block-size: clamp(5.7rem, 7.6vw, 6.9rem);
+    }
  }

  @media (max-height: 900px) {
@@ -452,6 +453,17 @@
      inline-size: 100%;
      aspect-ratio: 1.7 / 1;
      min-block-size: 0;
+      background: linear-gradient(160deg, rgb(var(--hud-surface-alt-rgb) / 0.86) 0%, rgb(var(--hud-surface-deep-rgb) / 0.9) 100%);
+      box-shadow: inset 0 0 0 1px rgb(var(--hud-border-strong-rgb) / 0.08), 0 0 8px rgb(var(--hud-glow-rgb) / 0.1);
+    }
+
+    .scan-haze {
+      display: none;
+    }
+
+    .chart-stage {
+      background: linear-gradient(180deg, rgb(var(--hud-surface-alt-rgb) / 0.78), rgb(var(--hud-surface-deep-rgb) / 0.88));
+      box-shadow: none;
    }
  }
 </style>
--- a/src/lib/components/SummaryCurve.svelte
+++ b/src/lib/components/SummaryCurve.svelte
@@ -11,22 +11,6 @@
  export let sessionStartedAt: number = Date.now();
  export let isRealtime = false;

-  let currentTimeSeconds = 0;
-  let timerId: ReturnType<typeof setInterval> | null = null;
-
-  onMount(() => {
-    timerId = setInterval(() => {
-      currentTimeSeconds = Math.round((Date.now() - sessionStartedAt) / 100) / 10;
-    }, 200);
-    return () => {
-      if (timerId != null) clearInterval(timerId);
-    };
-  });
-
-  $: i18n = locale === "zh-CN"
-    ? { now: "当前", min: "最小", max: "最大", waiting: "等待数据" }
-    : { now: "Now", min: "Min", max: "Max", waiting: "Waiting" };
-
  const viewportWidth = 120;
  const viewportHeight = 48;
  const plotInsetLeft = 13;
@@ -34,6 +18,8 @@
  const plotInsetTop = 4;
  const plotInsetBottom = 9;
  const fixedYBounds = { min: 0, max: 25 };
+  const maxCanvasDpr = 1.5;
+  const minDrawIntervalMs = 66;

  interface CurveSample {
    x: number;
@@ -45,23 +31,25 @@
    y: number;
  }

-  interface AxisTick {
-    value: number;
-    label: string;
-    plotX: number;
-    plotY: number;
-  }
+  let canvasEl: HTMLCanvasElement | undefined;
+  let chartStageEl: HTMLDivElement | undefined;
+  let currentTimeSeconds = 0;
+  let timerId: ReturnType<typeof setInterval> | null = null;
+  let resizeObserver: ResizeObserver | null = null;
+  let drawRequestId: number | null = null;
+  let lastDrawAt = 0;
+  let mounted = false;
+
+  $: i18n = locale === "zh-CN"
+    ? { now: "当前", min: "最小", max: "最大", waiting: "等待数据" }
+    : { now: "Now", min: "Min", max: "Max", waiting: "Waiting" };

  function clamp(value: number, min: number, max: number): number {
    return Math.min(max, Math.max(min, value));
  }

  function formatValue(value: number | null): string {
-    if (value === null) {
-      return "--";
-    }
-
-    return value.toFixed(1);
+    return value === null ? "--" : value.toFixed(1);
  }

  function formatAxisValue(value: number, axis: "x" | "y"): string {
@@ -73,6 +61,7 @@
      if (value < 60) {
        return `${value.toFixed(1)}s`;
      }
+
      const mins = Math.floor(value / 60);
      const secs = value - mins * 60;
      return `${mins}:${secs.toFixed(0).padStart(2, "0")}`;
@@ -81,17 +70,6 @@
    return `${Math.round(value)} N`;
  }

-  function resolveDataBounds(values: number[]): { min: number; max: number } {
-    if (values.length === 0) {
-      return { min: 0, max: 1 };
-    }
-
-    return {
-      min: Math.min(...values),
-      max: Math.max(...values)
-    };
-  }
-
  function resolveBounds(values: number[]): { min: number; max: number } {
    if (values.length === 0) {
      return { min: 0, max: 1 };
@@ -108,34 +86,23 @@
    return { min, max };
  }

-  function mapXToViewport(value: number, bounds: { min: number; max: number }): number {
-    const span = bounds.max - bounds.min;
-    const chartWidth = viewportWidth - plotInsetLeft - plotInsetRight;
-    const ratio = span <= 0 ? 0.5 : (value - bounds.min) / span;
-    const mappedX = plotInsetLeft + ratio * chartWidth;
-    return Math.round(clamp(mappedX, plotInsetLeft, viewportWidth - plotInsetRight) * 100) / 100;
-  }
-
-  function mapYToViewport(value: number, bounds: { min: number; max: number }): number {
-    const span = bounds.max - bounds.min;
-    const chartHeight = viewportHeight - plotInsetTop - plotInsetBottom;
-    const ratio = span <= 0 ? 0.5 : (value - bounds.min) / span;
-    const mappedY = viewportHeight - plotInsetBottom - ratio * chartHeight;
-    return Math.round(clamp(mappedY, plotInsetTop, viewportHeight - plotInsetBottom) * 100) / 100;
-  }
-
-  function buildSamples(rawYValues: number[], rawXValues: number[]): CurveSample[] {
+  function buildSamples(rawYValues: number[], rawXValues: number[], currentSeconds: number): CurveSample[] {
    if (!rawYValues.length) {
      return [];
    }

-    let previousX = 0;
+    const hasUsableXValues = rawXValues.length === rawYValues.length;
+    const realtimeSpacing = isRealtime
+      ? Math.max(currentSeconds / Math.max(rawYValues.length - 1, 1), 0.1)
+      : 1;
+    const realtimeStart = isRealtime ? Math.max(0, currentSeconds - realtimeSpacing * (rawYValues.length - 1)) : 0;
+    let previousX = realtimeStart;

    return rawYValues.map((rawY, index) => {
-      const x = rawXValues[index];
      const y = Number.isFinite(rawY) ? Number(rawY) : 0;
-      const fallbackX = index === 0 ? 0 : previousX + 1;
-      const resolvedX = Number.isFinite(x) ? Number(x) : fallbackX;
+      const rawX = rawXValues[index];
+      const fallbackX = isRealtime ? realtimeStart + index * realtimeSpacing : index + 1;
+      const resolvedX = hasUsableXValues && Number.isFinite(rawX) ? Number(rawX) : fallbackX;
      const normalizedX = index === 0 ? resolvedX : Math.max(resolvedX, previousX);
      previousX = normalizedX;
      return { x: normalizedX, y };
@@ -143,132 +110,274 @@
  }

  function resolveXScaleBounds(
-    samples: CurveSample[],
+    samplesValue: CurveSample[],
    currentSeconds: number,
    realtime: boolean
  ): { min: number; max: number } {
-    if (samples.length === 0) {
+    if (samplesValue.length === 0) {
      return { min: 0, max: 1 };
    }

-    const values = samples.map((sample) => sample.x);
-    const dataBounds = resolveBounds(values);
-
    if (!realtime) {
-      return dataBounds;
+      return resolveBounds(samplesValue.map((sample) => sample.x));
    }

-    const firstX = samples[0].x;
-    const lastX = samples[samples.length - 1].x;
+    const firstX = samplesValue[0].x;
+    const lastX = samplesValue[samplesValue.length - 1].x;
    const axisMax = Math.max(lastX, currentSeconds);
-    const positiveDiffs = samples
-      .slice(1)
-      .map((sample, index) => sample.x - samples[index].x)
-      .filter((diff) => diff > 0);
-    const averageSpacing =
-      positiveDiffs.length > 0 ? positiveDiffs.reduce((sum, diff) => sum + diff, 0) / positiveDiffs.length : 1;
-    const dataSpan = Math.max(lastX - firstX, 0);
-    const windowSpan = Math.max(dataSpan, averageSpacing * Math.max(samples.length - 1, 1), 1);
-    const axisMin = Math.max(0, axisMax - windowSpan);
-
+    const dataSpan = Math.max(lastX - firstX, 1);
+    const axisMin = Math.max(0, axisMax - dataSpan);
    return resolveBounds([axisMin, axisMax]);
  }

+  function mapXToViewport(value: number, bounds: { min: number; max: number }): number {
+    const span = bounds.max - bounds.min;
+    const chartWidth = viewportWidth - plotInsetLeft - plotInsetRight;
+    const ratio = span <= 0 ? 0.5 : (value - bounds.min) / span;
+    return clamp(plotInsetLeft + ratio * chartWidth, plotInsetLeft, viewportWidth - plotInsetRight);
+  }
+
+  function mapYToViewport(value: number, bounds: { min: number; max: number }): number {
+    const span = bounds.max - bounds.min;
+    const chartHeight = viewportHeight - plotInsetTop - plotInsetBottom;
+    const ratio = span <= 0 ? 0.5 : (value - bounds.min) / span;
+    return clamp(viewportHeight - plotInsetBottom - ratio * chartHeight, plotInsetTop, viewportHeight - plotInsetBottom);
+  }
+
  function convertPoints(
-    samples: CurveSample[],
+    samplesValue: CurveSample[],
    xBounds: { min: number; max: number },
    yBounds: { min: number; max: number }
  ): PlotPoint[] {
-    if (samples.length === 0) {
+    if (samplesValue.length === 0) {
      return [];
    }

-    if (samples.length === 1) {
+    if (samplesValue.length === 1) {
      return [{ x: viewportWidth / 2, y: viewportHeight / 2 }];
    }

-    return samples.map((sample) => {
-      return {
+    return samplesValue.map((sample) => ({
      x: mapXToViewport(sample.x, xBounds),
      y: mapYToViewport(sample.y, yBounds)
-      };
-    });
+    }));
  }

-  function buildYAxisTicks(
-    yScaleBounds: { min: number; max: number },
-    _yDataBounds: { min: number; max: number }
-  ): AxisTick[] {
+  function scaleCanvas(context: CanvasRenderingContext2D): { width: number; height: number; dpr: number } | null {
+    if (!canvasEl || !chartStageEl) {
+      return null;
+    }
+
+    const width = chartStageEl.clientWidth;
+    const height = chartStageEl.clientHeight;
+    const dpr = Math.min(window.devicePixelRatio || 1, maxCanvasDpr);
+
+    if (width <= 0 || height <= 0) {
+      return null;
+    }
+
+    const nextWidth = Math.round(width * dpr);
+    const nextHeight = Math.round(height * dpr);
+    if (canvasEl.width !== nextWidth || canvasEl.height !== nextHeight) {
+      canvasEl.width = nextWidth;
+      canvasEl.height = nextHeight;
+      canvasEl.style.width = `${width}px`;
+      canvasEl.style.height = `${height}px`;
+    }
+
+    context.setTransform((width * dpr) / viewportWidth, 0, 0, (height * dpr) / viewportHeight, 0, 0);
+    return { width, height, dpr };
+  }
+
+  function drawGrid(context: CanvasRenderingContext2D, yBounds: { min: number; max: number }): void {
    const tickValues = [25, 20, 15, 10, 5, 0];
-    return tickValues.map((value) => ({
-      value,
-      label: formatAxisValue(value, "y"),
-      plotX: plotInsetLeft - 1.8,
-      plotY: mapYToViewport(value, yScaleBounds)
-    }));
+
+    context.save();
+    context.lineWidth = 0.45;
+    context.strokeStyle = "rgb(128 170 180 / 0.18)";
+    context.fillStyle = "rgb(190 216 220 / 0.78)";
+    context.font = "600 3.2px system-ui, sans-serif";
+    context.textBaseline = "middle";
+
+    for (const tick of tickValues) {
+      const y = mapYToViewport(tick, yBounds);
+      context.beginPath();
+      context.moveTo(plotInsetLeft, y);
+      context.lineTo(viewportWidth - plotInsetRight, y);
+      context.stroke();
+
+      context.textAlign = "right";
+      context.fillText(formatAxisValue(tick, "y"), plotInsetLeft - 1.8, y + 0.6);
    }

-  function buildXAxisTicks(xScaleBounds: { min: number; max: number }): AxisTick[] {
-    if (!Number.isFinite(xScaleBounds.min) || !Number.isFinite(xScaleBounds.max)) {
-      return [];
+    context.restore();
  }

-    const first = xScaleBounds.min;
-    const middle = xScaleBounds.min + (xScaleBounds.max - xScaleBounds.min) / 2;
-    const last = xScaleBounds.max;
-    const tickValues = [first, middle, last];
-    return tickValues.map((value) => ({
-      value,
-      label: formatAxisValue(value, "x"),
-      plotX: mapXToViewport(value, xScaleBounds),
-      plotY: viewportHeight - 0.9
-    }));
+  function drawXAxis(context: CanvasRenderingContext2D, xBounds: { min: number; max: number }): void {
+    const first = xBounds.min;
+    const middle = xBounds.min + (xBounds.max - xBounds.min) / 2;
+    const last = xBounds.max;
+    const ticks = [first, middle, last];
+
+    context.save();
+    context.fillStyle = "rgb(190 216 220 / 0.82)";
+    context.font = "600 3.2px system-ui, sans-serif";
+    context.textBaseline = "alphabetic";
+
+    ticks.forEach((tick, index) => {
+      const x = mapXToViewport(tick, xBounds);
+      context.textAlign = index === 0 ? "left" : index === ticks.length - 1 ? "right" : "center";
+      context.fillText(formatAxisValue(tick, "x"), x, viewportHeight - 0.9);
+    });
+
+    context.restore();
  }

-  function createLinePath(points: PlotPoint[]): string {
-    if (points.length === 0) {
-      return "";
-    }
-
-    return points.map((point, index) => `${index === 0 ? "M" : "L"} ${point.x} ${point.y}`).join(" ");
-  }
-
-  function createAreaPath(points: PlotPoint[]): string {
+  function drawArea(context: CanvasRenderingContext2D, points: PlotPoint[]): void {
    if (points.length < 2) {
-      return "";
+      return;
    }

-    const linePath = createLinePath(points);
    const firstPoint = points[0];
    const lastPoint = points[points.length - 1];
+    const gradient = context.createLinearGradient(0, plotInsetTop, 0, viewportHeight - plotInsetBottom);
+    gradient.addColorStop(0, "rgb(62 232 255 / 0.28)");
+    gradient.addColorStop(1, "rgb(62 232 255 / 0.02)");

-    return `${linePath} L ${lastPoint.x} ${viewportHeight - plotInsetBottom} L ${firstPoint.x} ${viewportHeight - plotInsetBottom} Z`;
+    context.save();
+    context.beginPath();
+    context.moveTo(firstPoint.x, firstPoint.y);
+    for (let index = 1; index < points.length; index += 1) {
+      context.lineTo(points[index].x, points[index].y);
+    }
+    context.lineTo(lastPoint.x, viewportHeight - plotInsetBottom);
+    context.lineTo(firstPoint.x, viewportHeight - plotInsetBottom);
+    context.closePath();
+    context.fillStyle = gradient;
+    context.fill();
+    context.restore();
+  }
+
+  function drawLine(context: CanvasRenderingContext2D, points: PlotPoint[]): void {
+    if (!points.length) {
+      return;
+    }
+
+    context.save();
+    context.lineWidth = 1.35;
+    context.lineCap = "round";
+    context.lineJoin = "round";
+    context.strokeStyle = "rgb(62 232 255 / 0.96)";
+    context.beginPath();
+    context.moveTo(points[0].x, points[0].y);
+    for (let index = 1; index < points.length; index += 1) {
+      context.lineTo(points[index].x, points[index].y);
+    }
+    context.stroke();
+
+    const lastPoint = points[points.length - 1];
+    context.fillStyle = "rgb(133 255 68 / 0.98)";
+    context.beginPath();
+    context.arc(lastPoint.x, lastPoint.y, 1.7, 0, Math.PI * 2);
+    context.fill();
+    context.restore();
+  }
+
+  function drawCanvas(): void {
+    if (!canvasEl) {
+      return;
+    }
+
+    const context = canvasEl.getContext("2d", { alpha: true });
+    if (!context) {
+      return;
+    }
+
+    const scaled = scaleCanvas(context);
+    if (!scaled) {
+      return;
+    }
+
+    context.clearRect(0, 0, viewportWidth, viewportHeight);
+
+    if (sampleCount === 0) {
+      return;
+    }
+
+    drawGrid(context, yScaleBounds);
+    drawArea(context, plotPoints);
+    drawLine(context, plotPoints);
+    drawXAxis(context, xScaleBounds);
+  }
+
+  function scheduleDraw(): void {
+    if (!mounted || typeof window === "undefined") {
+      return;
+    }
+
+    if (drawRequestId != null) {
+      return;
+    }
+
+    drawRequestId = window.requestAnimationFrame((timestamp) => {
+      drawRequestId = null;
+
+      if (lastDrawAt > 0 && timestamp - lastDrawAt < minDrawIntervalMs) {
+        scheduleDraw();
+        return;
+      }
+
+      lastDrawAt = timestamp;
+      drawCanvas();
+    });
  }

  $: sourceYValues = yValues && yValues.length ? yValues : summary.points;
  $: sourceXValues = xValues && xValues.length ? xValues : summary.xValues ?? [];
-  $: samples = (() => {
-    const base = buildSamples(sourceYValues, sourceXValues);
-    if (isRealtime && base.length > 0 && currentTimeSeconds > 0) {
-      const lastSample = base[base.length - 1];
-      base[base.length - 1] = { ...lastSample, x: Math.max(lastSample.x, currentTimeSeconds) };
-    }
-    return base;
-  })();
+  $: samples = buildSamples(sourceYValues, sourceXValues, currentTimeSeconds);
  $: sampleCount = samples.length;
  $: xScaleBounds = resolveXScaleBounds(samples, currentTimeSeconds, isRealtime);
  $: yScaleBounds = fixedYBounds;
-  $: xDataBounds = resolveDataBounds(samples.map((sample) => sample.x));
-  $: yDataBounds = resolveDataBounds(samples.map((sample) => sample.y));
  $: plotPoints = convertPoints(samples, xScaleBounds, yScaleBounds);
-  $: linePath = createLinePath(plotPoints);
-  $: areaPath = createAreaPath(plotPoints);
-  $: lastPoint = plotPoints.length > 0 ? plotPoints[plotPoints.length - 1] : null;
-  $: yAxisTicks = sampleCount > 0 ? buildYAxisTicks(yScaleBounds, yDataBounds) : [];
-  $: xAxisTicks = sampleCount > 0 ? buildXAxisTicks(xScaleBounds) : [];
  $: latestValue = formatValue(summary.latest);
  $: minValue = formatValue(summary.min);
  $: maxValue = formatValue(summary.max);
+  $: {
+    sampleCount;
+    plotPoints;
+    xScaleBounds;
+    locale;
+    scheduleDraw();
+  }
+
+  onMount(() => {
+    mounted = true;
+    currentTimeSeconds = Math.round((Date.now() - sessionStartedAt) / 100) / 10;
+    scheduleDraw();
+
+    timerId = setInterval(() => {
+      if (!isRealtime) {
+        return;
+      }
+
+      currentTimeSeconds = Math.round((Date.now() - sessionStartedAt) / 100) / 10;
+    }, 500);
+
+    if (chartStageEl) {
+      resizeObserver = new ResizeObserver(() => scheduleDraw());
+      resizeObserver.observe(chartStageEl);
+    }
+
+    return () => {
+      mounted = false;
+      if (timerId != null) clearInterval(timerId);
+      if (drawRequestId != null) window.cancelAnimationFrame(drawRequestId);
+      resizeObserver?.disconnect();
+      timerId = null;
+      drawRequestId = null;
+      resizeObserver = null;
+    };
+  });
 </script>

 <article
@@ -290,52 +399,8 @@
    </div>
  </header>

-  <div class="chart-stage">
-    <svg viewBox="0 0 {viewportWidth} {viewportHeight}" preserveAspectRatio="none" role="img" aria-label={summary.label}>
-      <defs>
-        <linearGradient id="summary-fill" x1="0%" y1="0%" x2="0%" y2="100%">
-          <stop offset="0%" stop-color="rgb(62 232 255 / 0.28)" />
-          <stop offset="100%" stop-color="rgb(62 232 255 / 0.02)" />
-        </linearGradient>
-      </defs>
-
-      <g class="grid-lines" aria-hidden="true">
-        {#each yAxisTicks as tick (`grid-${tick.value}`)}
-          <line x1={plotInsetLeft} y1={tick.plotY} x2={viewportWidth - plotInsetRight} y2={tick.plotY}></line>
-        {/each}
-      </g>
-
-      {#if areaPath}
-        <path d={areaPath} class="summary-area"></path>
-      {/if}
-
-      {#if linePath}
-        <path d={linePath} class="summary-line"></path>
-      {/if}
-
-      {#if lastPoint}
-        <circle cx={lastPoint.x} cy={lastPoint.y} r="1.7" class="summary-dot"></circle>
-      {/if}
-
-      <g class="axis-labels" aria-hidden="true">
-        {#each yAxisTicks as tick, index (`y-${index}`)}
-          <text class="axis-label y-axis-label" x={tick.plotX} y={tick.plotY + 1.1} text-anchor="end">
-            {tick.label}
-          </text>
-        {/each}
-
-        {#each xAxisTicks as tick, index (`x-${index}`)}
-          <text
-            class="axis-label x-axis-label"
-            x={tick.plotX}
-            y={tick.plotY}
-            text-anchor={index === 0 ? "start" : index === xAxisTicks.length - 1 ? "end" : "middle"}
-          >
-            {tick.label}
-          </text>
-        {/each}
-      </g>
-    </svg>
+  <div class="chart-stage" bind:this={chartStageEl}>
+    <canvas class="summary-canvas" bind:this={canvasEl} aria-label={summary.label}></canvas>

    {#if sampleCount === 0}
      <div class="empty-state">
@@ -389,8 +454,7 @@
    transition:
      opacity var(--fade-ms) cubic-bezier(0.18, 0.88, 0.3, 1),
      transform var(--enter-ms) cubic-bezier(0.2, 0.9, 0.28, 1),
-      border-color 460ms ease,
-      filter 760ms ease;
+      border-color 460ms ease;
    transition-delay: calc(var(--panel-index) * 140ms);
  }

@@ -480,53 +544,12 @@
      radial-gradient(circle at 50% 0, rgb(var(--hud-glow-rgb) / 0.09), transparent 45%);
  }

-  svg {
+  .summary-canvas {
    display: block;
    inline-size: 100%;
    block-size: 100%;
  }

-  .grid-lines line {
-    stroke: rgb(var(--hud-border-strong-rgb) / 0.16);
-    stroke-width: 0.45;
-  }
-
-  .summary-area {
-    fill: url(#summary-fill);
-  }
-
-  .summary-line {
-    fill: none;
-    stroke: rgb(var(--hud-cyan-rgb) / 0.96);
-    stroke-width: 1.35;
-    stroke-linecap: round;
-    stroke-linejoin: round;
-    filter: drop-shadow(0 0 4px rgb(var(--hud-cyan-rgb) / 0.22));
-  }
-
-  .summary-dot {
-    fill: rgb(var(--hud-lime-rgb) / 0.98);
-    filter: drop-shadow(0 0 6px rgb(var(--hud-lime-rgb) / 0.3));
-  }
-
-  .axis-label {
-    fill: rgb(var(--hud-text-main-rgb) / 0.88);
-    font-size: 3.2px;
-    font-weight: 600;
-    letter-spacing: 0.02em;
-    text-shadow:
-      0 1px 0 rgb(0 0 0 / 0.46),
-      0 0 4px rgb(0 0 0 / 0.3);
-  }
-
-  .y-axis-label {
-    fill: rgb(var(--hud-text-dim-rgb) / 0.84);
-  }
-
-  .x-axis-label {
-    fill: rgb(var(--hud-text-dim-rgb) / 0.9);
-  }
-
  .empty-state {
    position: absolute;
    inset: 0;
@@ -637,6 +660,12 @@
  @media (max-width: 900px) {
    .signal-panel {
      inline-size: 100%;
+      background: linear-gradient(160deg, rgb(var(--hud-surface-alt-rgb) / 0.86) 0%, rgb(var(--hud-surface-deep-rgb) / 0.9) 100%);
+      box-shadow: inset 0 0 0 1px rgb(var(--hud-border-strong-rgb) / 0.08), 0 0 8px rgb(var(--hud-glow-rgb) / 0.1);
+    }
+
+    .chart-stage {
+      background: linear-gradient(180deg, rgb(var(--hud-surface-alt-rgb) / 0.78), rgb(var(--hud-surface-deep-rgb) / 0.88));
    }
  }
 </style>
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -44,6 +44,29 @@
    dtsMs: number;
  }

+  interface AndroidUsbSerialDevice {
+    name: string;
+    vendorId: number;
+    productId: number;
+    manufacturer: string;
+    product: string;
+    serial: string;
+    hasPermission: boolean;
+  }
+
+  interface AndroidUsbSerialListResult {
+    devices: AndroidUsbSerialDevice[];
+  }
+
+  interface AndroidUsbSerialOpenResult {
+    fd: number;
+    name: string;
+    vendorId: number;
+    productId: number;
+  }
+
+  type AndroidUsbSerialCommand = "list" | "open" | "close";
+
  const copyByLocale: Record<LocaleCode, HudCopy> = {
    "zh-CN": {
      appName: "JE-Skin",
@@ -168,6 +191,7 @@
  const pointsPerSeries = 28;
  const summaryPointsPerSeries = 42;
  const signalRenderTickMs = 1200;
+  const hudRealtimeRenderMs = 33;
  const replayDefaultFrameMs = 40;
  const showSignalPanels = false;
  const mockToneCycle: SignalTone[] = ["cyan", "lime", "orange", "violet", "gold", "rose"];
@@ -203,6 +227,7 @@
  let connectionState: ConnectionState = "offline";
  let serialPortValue = "COM14";
  let serialPortOptions = ["COM4", "COM9", "COM14", "COM16"];
+  let androidUsbSerialDevices: AndroidUsbSerialDevice[] = [];
  let isRefreshingPorts = false;
  let connectionNotice = "";
  let connectionNoticeTone: HudNoticeTone = "info";
@@ -261,6 +286,9 @@
  } | null = null;
  let devkitStatusTimer: number | null = null;
  let sessionStartedAt: number = Date.now();
+  let pendingHudPacket: HudPacket | null = null;
+  let hudFrameRequestId: number | null = null;
+  let lastHudRenderAt = 0;

  $: uiCopy = copyByLocale[locale];
  $: configLinks = buildConfigLinks(
@@ -287,6 +315,66 @@
    return typeof window !== "undefined" && "__TAURI_INTERNALS__" in window;
  }

+  function isAndroidRuntime(): boolean {
+    if (!isTauriRuntime() || typeof navigator === "undefined") {
+      return false;
+    }
+
+    return /Android/i.test(navigator.userAgent);
+  }
+
+  function formatAndroidUsbSerialLabel(device: AndroidUsbSerialDevice): string {
+    const product = device.product || device.manufacturer || "USB Serial";
+    const ids = `${device.vendorId.toString(16).padStart(4, "0")}:${device.productId
+      .toString(16)
+      .padStart(4, "0")}`;
+    return `${product} (${ids})`;
+  }
+
+  function findAndroidUsbSerialDevice(name: string): AndroidUsbSerialDevice | null {
+    return androidUsbSerialDevices.find((device) => device.name === name) ?? null;
+  }
+
+  function normalizeAndroidUsbSerialDevices(value: unknown): AndroidUsbSerialDevice[] {
+    if (Array.isArray(value)) {
+      return value.filter((device): device is AndroidUsbSerialDevice => {
+        return typeof device === "object" && device !== null && typeof (device as AndroidUsbSerialDevice).name === "string";
+      });
+    }
+
+    if (typeof value === "object" && value !== null) {
+      return Object.values(value).filter((device): device is AndroidUsbSerialDevice => {
+        return typeof device === "object" && device !== null && typeof (device as AndroidUsbSerialDevice).name === "string";
+      });
+    }
+
+    return [];
+  }
+
+  async function invokeAndroidUsbSerial<T>(
+    command: AndroidUsbSerialCommand,
+    args?: Record<string, unknown>
+  ): Promise<T> {
+    const commandNames: Record<AndroidUsbSerialCommand, [string, string]> = {
+      list: ["usb_serial_list", "usbSerialList"],
+      open: ["usb_serial_open", "usbSerialOpen"],
+      close: ["usb_serial_close", "usbSerialClose"]
+    };
+
+    const [primary, fallback] = commandNames[command];
+
+    try {
+      return await invoke<T>(`plugin:usb-serial|${primary}`, args);
+    } catch (error) {
+      const message = String(error);
+      if (!message.includes("No command")) {
+        throw error;
+      }
+
+      return await invoke<T>(`plugin:usb-serial|${fallback}`, args);
+    }
+  }
+
  function clamp(value: number, min: number, max: number): number {
    return Math.min(max, Math.max(min, value));
  }
@@ -726,12 +814,10 @@
    const safeIndex = clamp(index, 0, replayFrames.length - 1);
    const startIndex = Math.max(0, safeIndex - summaryPointsPerSeries + 1);
    const points: number[] = [];
-    const xSeconds: number[] = [];
    for (let cursor = startIndex; cursor <= safeIndex; cursor += 1) {
      points.push(replayFrameTotal(replayFrames[cursor]));
-      xSeconds.push(replayFrames[cursor].dtsMs / 1000);
    }
-    return buildSummary(points, xSeconds);
+    return buildSummary(points);
  }

  function applyReplayFrame(index: number): void {
@@ -744,7 +830,9 @@
    replayHasDisplayedFrame = true;
    replayProgress = replayFrames.length > 1 ? safeIndex / (replayFrames.length - 1) : 1;
    pressureMatrix = frameValuesToMatrix(replayFrames[safeIndex].values);
+    if (signalPanels.length > 0) {
      signalPanels = buildInactivePanels();
+    }
    summary = buildReplaySummaryAt(safeIndex);
    hasSignalData = true;
  }
@@ -903,7 +991,6 @@
  function buildEmptySummary(): HudSummary {
    return {
      label: "Resultant Force",
-      xValues: [],
      points: [],
      latest: null,
      min: null,
@@ -923,19 +1010,13 @@
    return shouldHideSummary(summaryValue.points) ? buildEmptySummary() : summaryValue;
  }

-  function buildSummary(points: number[], xValues: number[] = []): HudSummary {
+  function buildSummary(points: number[]): HudSummary {
    if (points.length === 0) {
      return buildEmptySummary();
    }

-    const resolvedXValues = points.map((_, index) => {
-      const x = xValues[index];
-      return Number.isFinite(x) ? Number(x) : index + 1;
-    });
-
    return {
      label: "Resultant Force",
-      xValues: resolvedXValues,
      points,
      latest: points[points.length - 1],
      min: Math.min(...points),
@@ -960,21 +1041,13 @@
      ? summaryValue.points[summaryValue.points.length - 1]
      : randomBetween(280, 1600);
    const next = Math.round(clamp(previous + randomBetween(-160, 160), 120, 2400) * 10) / 10;
-    const nowSeconds = Math.round((Date.now() - sessionStartedAt) / 100) / 10;
-    const previousXValues =
-      summaryValue.xValues && summaryValue.xValues.length === summaryValue.points.length
-        ? summaryValue.xValues
-        : summaryValue.points.map((_, index) => nowSeconds);
    const points =
      summaryValue.points.length >= summaryPointsPerSeries
        ? summaryValue.points.slice(1)
        : summaryValue.points.slice();
-    const xValues =
-      previousXValues.length >= summaryPointsPerSeries ? previousXValues.slice(1) : previousXValues.slice();

    points.push(next);
-    xValues.push(nowSeconds);
-    return buildSummary(points, xValues);
+    return buildSummary(points);
  }

  function buildInactivePanels(): HudSignalPanel[] {
@@ -985,23 +1058,66 @@
    if (replayHasData) {
      return;
    }
-    signalPanels = showSignalPanels ? packet.panels : buildInactivePanels();
-    if (packet.summary.points.length > 0) {
-      const nowSeconds = Math.round((Date.now() - sessionStartedAt) / 100) / 10;
-      const pointCount = packet.summary.points.length;
-      const spacing =
-        pointCount > 1 ? Math.min(1.2, nowSeconds / Math.max(pointCount - 1, 1)) : 0;
-      const startX = Math.max(0, nowSeconds - spacing * Math.max(pointCount - 1, 0));
-      const xValues = packet.summary.points.map((_, index) => Math.round((startX + index * spacing) * 10) / 10);
-      summary = { ...packet.summary, xValues };
-    } else {
-      summary = packet.summary;
+    if (showSignalPanels) {
+      signalPanels = packet.panels;
+    } else if (signalPanels.length > 0) {
+      signalPanels = buildInactivePanels();
    }
+    summary = packet.summary;
    pressureMatrix = packet.pressureMatrix;
    hasSignalData = signalPanels.length > 0 || packet.summary.points.length > 0;
  }

+  function getFrameClock(): number {
+    return typeof performance !== "undefined" ? performance.now() : Date.now();
+  }
+
+  function cancelPendingHudPacket(): void {
+    pendingHudPacket = null;
+    if (hudFrameRequestId != null && typeof window !== "undefined") {
+      window.cancelAnimationFrame(hudFrameRequestId);
+      hudFrameRequestId = null;
+    }
+  }
+
+  function scheduleHudPacketFlush(): void {
+    if (hudFrameRequestId != null || typeof window === "undefined") {
+      return;
+    }
+
+    hudFrameRequestId = window.requestAnimationFrame(flushPendingHudPacket);
+  }
+
+  function flushPendingHudPacket(timestamp: number = getFrameClock()): void {
+    hudFrameRequestId = null;
+
+    if (!pendingHudPacket) {
+      return;
+    }
+
+    const elapsed = timestamp - lastHudRenderAt;
+    if (lastHudRenderAt > 0 && elapsed < hudRealtimeRenderMs) {
+      scheduleHudPacketFlush();
+      return;
+    }
+
+    const packet = pendingHudPacket;
+    pendingHudPacket = null;
+    lastHudRenderAt = timestamp;
+    applyPacket(packet);
+  }
+
+  function enqueueHudPacket(packet: HudPacket): void {
+    if (replayHasData) {
+      return;
+    }
+
+    pendingHudPacket = packet;
+    scheduleHudPacketFlush();
+  }
+
  function clearHudPanels(): void {
+    cancelPendingHudPacket();
    hasSignalData = false;
    signalPanels = buildInactivePanels();
    summary = buildEmptySummary();
@@ -1221,6 +1337,10 @@

  function handlePortChange(event: CustomEvent<string>): void {
    serialPortValue = event.detail;
+    if (isAndroidRuntime()) {
+      const selectedDevice = findAndroidUsbSerialDevice(serialPortValue);
+      deviceValue = selectedDevice ? formatAndroidUsbSerialLabel(selectedDevice) : "Android USB Serial";
+    }
    connectionState = "offline";
    connectionNotice = "";
    clearHudPanels();
@@ -1256,7 +1376,7 @@
          case "InvalidConfig":
            return "当前串口配置无效，请重新选择端口。";
          default:
-            return "串口连接失败，请稍后重试。";
+            return `串口连接失败：${errorCode}`;
        }
      }

@@ -1277,7 +1397,7 @@
        case "InvalidConfig":
          return "The selected serial port is invalid. Choose another port.";
        default:
-          return "Connection failed. Please try again.";
+          return `Connection failed: ${errorCode}`;
      }
    }

@@ -1288,14 +1408,16 @@
    const errorCode = normalizeInvokeError(error);

    if (locale === "zh-CN") {
-      return errorCode === "ScanError"
-        ? "串口列表刷新失败，请确认系统串口服务正常。"
-        : "刷新串口列表失败，请稍后重试。";
+      if (errorCode === "ScanError") {
+        return "串口列表刷新失败，请确认系统串口服务正常。";
+      }
+
+      return `刷新串口列表失败：${errorCode}`;
    }

    return errorCode === "ScanError"
      ? "Refreshing serial ports failed. Check whether the OS serial service is available."
-      : "Refreshing serial ports failed. Please try again.";
+      : `Refreshing serial ports failed: ${errorCode}`;
  }

  function resolveExportNotice(error: unknown): string {
@@ -1350,6 +1472,33 @@
    isRefreshingPorts = true;

    try {
+      try {
+        const result = await invokeAndroidUsbSerial<AndroidUsbSerialListResult>("list");
+        androidUsbSerialDevices = normalizeAndroidUsbSerialDevices(result.devices);
+        serialPortOptions = androidUsbSerialDevices.map((device) => device.name);
+
+        if (serialPortOptions.includes(serialPortValue)) {
+          return;
+        }
+
+        serialPortValue = serialPortOptions[0] ?? "";
+        const selectedDevice = findAndroidUsbSerialDevice(serialPortValue);
+        deviceValue = selectedDevice ? formatAndroidUsbSerialLabel(selectedDevice) : "Android USB Serial";
+
+        if (!serialPortValue) {
+          connectionState = "offline";
+          clearHudPanels();
+          connectionNotice =
+            locale === "zh-CN" ? "未发现 USB 串口设备，请确认已通过 OTG 接入设备。" : "No USB serial device found.";
+          connectionNoticeTone = "warn";
+        }
+        return;
+      } catch (androidError) {
+        if (isAndroidRuntime()) {
+          throw androidError;
+        }
+      }
+
      const ports = await invoke<string[]>("serial_enum");
      serialPortOptions = ports;

@@ -1390,7 +1539,28 @@
    connectionNotice = "";

    try {
-      const result = await invoke<SerialConnectResult>("serial_connect", { port: event.detail });
+      let result: SerialConnectResult;
+
+      if (isAndroidRuntime()) {
+        const selectedDevice = findAndroidUsbSerialDevice(event.detail);
+        const opened = await invokeAndroidUsbSerial<AndroidUsbSerialOpenResult>("open", {
+          name: event.detail,
+          vendorId: selectedDevice?.vendorId,
+          productId: selectedDevice?.productId
+        });
+        result = await invoke<SerialConnectResult>("serial_connect_fd", {
+          fd: opened.fd,
+          deviceName: opened.name,
+          device_name: opened.name
+        });
+        const openedDevice = findAndroidUsbSerialDevice(opened.name) ?? selectedDevice;
+        deviceValue = openedDevice
+          ? formatAndroidUsbSerialLabel(openedDevice)
+          : `USB Serial (${opened.vendorId.toString(16)}:${opened.productId.toString(16)})`;
+      } else {
+        result = await invoke<SerialConnectResult>("serial_connect", { port: event.detail });
+      }
+
      connectionState = result.connected ? "online" : "offline";
      serialPortValue = result.port;
      connectionNotice = "";
@@ -1398,6 +1568,13 @@
      clearHudPanels();
      console.info("[serial] connect result:", result.message);
    } catch (error) {
+      if (isAndroidRuntime()) {
+        try {
+          await invokeAndroidUsbSerial("close");
+        } catch (closeError) {
+          console.warn("USB serial close after failed connect failed:", closeError);
+        }
+      }
      connectionState = "offline";
      connectionNotice = resolveSerialNotice(error, "connect");
      connectionNoticeTone = "warn";
@@ -1409,6 +1586,9 @@
  async function handleSerialDisconnect(): Promise<void> {
    try {
      const result = await invoke<SerialConnectResult>("serial_disconnect");
+      if (isAndroidRuntime()) {
+        await invokeAndroidUsbSerial("close");
+      }
      connectionState = result.connected ? "online" : "offline";
      connectionNotice = "";
      connectionNoticeTone = "info";
@@ -1758,7 +1938,7 @@
      void checkForAppUpdate();
      void pollDevKitStatus();
      devkitStatusTimer = window.setInterval(() => void pollDevKitStatus(), 3000);
-      void startTauriHudStream(applyPacket)
+      void startTauriHudStream(enqueueHudPacket)
        .then((unlisten) => {
          if (disposed) {
            unlisten();
@@ -1788,11 +1968,12 @@
          console.error("Failed to listen for devkit_pzt_angle:", error);
        });
    } else {
-      stopMockFeed = startMockFeed(applyPacket);
+      stopMockFeed = startMockFeed(enqueueHudPacket);
    }

    return () => {
      disposed = true;
+      cancelPendingHudPacket();
      pauseReplayPlayback();
      stopMockFeed?.();
      unlistenHudStream?.();
@@ -2014,6 +2195,27 @@
    mix-blend-mode: soft-light;
  }

+  @media (max-width: 900px) {
+    .hud-noise {
+      display: none;
+    }
+
+    .hud-vignette {
+      opacity: 0.4;
+    }
+
+    .hud-gradient {
+      background:
+        linear-gradient(170deg, var(--hud-bg-20) 0%, var(--hud-bg-10) 56%, var(--hud-bg-30) 100%);
+    }
+
+    .hud-layout {
+      gap: clamp(0.3rem, 1vw, 0.6rem);
+      padding: clamp(0.4rem, 1.2vw, 0.8rem);
+      box-shadow: inset 0 -12px 24px rgb(0 0 0 / 0.24);
+    }
+  }
+
  .hud-layout {
    position: relative;
    z-index: 1;
Author	SHA1	Message	Date
lenn	69bd3d1d8e	Optimize realtime charts for tablet	2026-05-12 18:38:22 +08:00
lenn	360b57e3e2	Add Android USB serial bridge docs	2026-05-11 22:30:45 +08:00
lenn	c5f4f854bf	perf: optimize mobile line chart performance and remove window controls - Remove drop-shadow filters on SVG paths on mobile (SignalChart, SummaryCurve) - Hide scan-haze overlay (mix-blend-mode: screen) on mobile - Remove feTurbulence noise filter on mobile (biggest perf win) - Simplify backgrounds and box-shadows on mobile - Remove blur transition on inactive panels - Hide window control buttons (minimize/maximize/close) on mobile - Configure Android release build to sign with debug keystore - Update README with changelog and Android build instructions	2026-05-11 22:11:40 +08:00
lenn	551022215c	feat: add Android USB serial port support via USB Host API - Add USB Host permissions and device filter to AndroidManifest.xml - Create UsbSerialPlugin Kotlin plugin for USB Host API (enumerate, permission, open devices) - Add serial_connect_fd command for Android to accept USB file descriptors - Create RawFdStream wrapper for async I/O on raw file descriptors - Make run_serial_with_poll generic over AsyncRead+AsyncWrite - Register UsbSerialPlugin in MainActivity	2026-05-11 20:31:46 +08:00
lenn	7323021aec	chore: add Android debug keystore for APK signing	2026-05-11 19:49:28 +08:00
lenn	a85ce0b4a2	feat: add Android ARMv8 (aarch64) build support - Initialize Tauri Android project structure (gen/android) - Fix desktop_dir() unavailability on Android in file_explorer.rs and serial.rs - Fix minimize/maximize/unmaximize unavailability on Android in window.rs - Remove updater:default permission from default capabilities (not available on Android) - Update .gitignore for Android build artifacts - Successfully builds APK for aarch64-linux-android target	2026-05-11 19:38:01 +08:00