build: Android APK builds working — debug (8.9MB) and release (2.0MB)

- Fix C++ std::std:: double namespace in oboe_bridge.cpp
- Auto-fetch Oboe headers from GitHub in build.rs
- Configure cargo cross-compilation (.cargo/config.toml) with NDK linkers
- Fix Gradle settings (dependencyResolutionManagement), signing configs,
  Compose LinearProgressIndicator API, and Android manifest theme
- Add Gradle wrapper, .gitignore for build artifacts
- arm64-v8a only (raptorq crate incompatible with armv7 32-bit)
- Release APK: 2.0MB signed with wzp-release key
- Debug APK: 8.9MB signed with wzp-debug key

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

android/.gitignore

@@ -0,0 +1,6 @@
+.gradle/
+build/
+app/build/
+app/src/main/jniLibs/
+local.properties
+keystore/*.jks

android/app/build.gradle.kts

@@ -13,11 +13,31 @@ android {
         targetSdk = 34
         versionCode = 1
         versionName = "0.1.0"
-        ndk { abiFilters += listOf("arm64-v8a", "armeabi-v7a") }
+        ndk { abiFilters += listOf("arm64-v8a") }
+    }
+
+    signingConfigs {
+        create("release") {
+            storeFile = file("${project.rootDir}/keystore/wzp-release.jks")
+            storePassword = "wzphone2024"
+            keyAlias = "wzp-release"
+            keyPassword = "wzphone2024"
+        }
+        getByName("debug") {
+            storeFile = file("${project.rootDir}/keystore/wzp-debug.jks")
+            storePassword = "android"
+            keyAlias = "wzp-debug"
+            keyPassword = "android"
+        }
     }
 
     buildTypes {
+        debug {
+            signingConfig = signingConfigs.getByName("debug")
+            isDebuggable = true
+        }
         release {
+            signingConfig = signingConfigs.getByName("release")
             isMinifyEnabled = true
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
@@ -46,7 +66,7 @@ tasks.register<Exec>("cargoNdkBuild") {
     workingDir = file("${project.rootDir}/..")
     commandLine(
         "cargo", "ndk",
-        "-t", "arm64-v8a", "-t", "armeabi-v7a",
+        "-t", "arm64-v8a",
         "-o", "${project.projectDir}/src/main/jniLibs",
         "build", "--release", "-p", "wzp-android"
     )

android/app/src/main/AndroidManifest.xml

@@ -13,7 +13,7 @@
         android:name=".WzpApplication"
         android:label="WZ Phone"
         android:supportsRtl="true"
-        android:theme="@style/Theme.Material3.DayNight">
+        android:theme="@android:style/Theme.Material.Light.NoActionBar">
 
         <activity
             android:name=".ui.call.CallActivity"

android/app/src/main/java/com/wzp/ui/call/InCallScreen.kt

@@ -186,7 +186,7 @@ private fun AudioLevelBar(framesEncoded: Long) {
         )
         Spacer(modifier = Modifier.height(4.dp))
         LinearProgressIndicator(
-            progress = { level },
+            progress = level,
             modifier = Modifier
                 .fillMaxWidth(0.6f)
                 .height(6.dp)

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

android/gradlew

@@ -0,0 +1,5 @@
+#!/bin/sh
+# Gradle wrapper script
+APP_HOME=$(cd "$(dirname "$0")" && pwd)
+CLASSPATH="$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
+exec java -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

android/settings.gradle.kts

@@ -6,7 +6,8 @@ pluginManagement {
     }
 }
 
-dependencyResolution {
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
     repositories {
         google()
         mavenCentral()