Bump SDK levels for Google Play (target/compile 35, min 24)

Google Play has required apps to target API 35 (Android 15) since
Nov 1, 2025; the current targetSdk 33 means uploads are rejected.
Move to 35 across the board and raise the floor to API 24 (Android
7.0), which covers ~97% of active devices and matches the practical
minimum required by current AndroidX / Compose dependencies.

AGP 8.1.2 caps compileSdk at 34, so the toolchain has to move too.
Pick the smallest delta that supports compileSdk 35:

  - AGP            8.1.2  -> 8.5.0
  - Gradle wrapper 8.4    -> 8.7
  - Kotlin         1.9.10 -> 1.9.25
  - Compose Compiler ext  1.5.3  -> 1.5.15  (matches Kotlin 1.9.25)
  - compileSdk     34 -> 35
  - minSdk         21 -> 24
  - targetSdk      33 -> 35

JDK requirement (17) unchanged; NDK 25.1.8937393 unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: madeye

app/build.gradle

@@ -12,7 +12,7 @@ if (localPropsFile.exists()) {
 
 android {
     namespace 'org.proxydroid'
-    compileSdk 34
+    compileSdk 35
     ndkVersion "25.1.8937393"
 
     signingConfigs {
@@ -29,8 +29,8 @@ android {
 
     defaultConfig {
         applicationId "org.proxydroid"
-        minSdk 21
-        targetSdk 33
+        minSdk 24
+        targetSdk 35
         versionCode 74
         versionName "3.4.0"
 
@@ -76,7 +76,7 @@ android {
     }
 
     composeOptions {
-        kotlinCompilerExtensionVersion '1.5.3'
+        kotlinCompilerExtensionVersion '1.5.15'
     }
 
     packagingOptions {

build.gradle

@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.9.10'
+    ext.kotlin_version = '1.9.25'
     repositories {
         google()
         mavenCentral()
         gradlePluginPortal()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.1.2'
+        classpath 'com.android.tools.build:gradle:8.5.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'org.mozilla.rust-android-gradle:plugin:0.9.6'
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists