build: upgrade AGP to 9.0.0 and Gradle to 9.2.1

Upgrades the Android Gradle Plugin to 9.0.0, the Gradle Wrapper to 9.2.1, and the Compose Screenshot plugin to 0.0.1-alpha13. This resolves configuration issues with the `GenerateTestConfig` task where `mergedManifest` was not properly configured.
Also adds necessary AGP 9.0 compatibility flags to gradle.properties.

Author: dkhawk

gradle.properties

@@ -34,3 +34,13 @@ android.nonTransitiveRClass=false
 android.nonFinalResIds=false
 
 android.experimental.enableScreenshotTest=true
+android.defaults.buildfeatures.resvalues=true
+android.sdk.defaultTargetSdkToCompileSdkIfUnset=false
+android.enableAppCompileTimeRClass=false
+android.usesSdkInManifest.disallowed=false
+android.uniquePackageNames=false
+android.dependency.useConstraints=true
+android.r8.strictFullModeForKeepRules=false
+android.r8.optimizedResourceShrinking=false
+android.builtInKotlin=false
+android.newDsl=false

gradle/libs.versions.toml

@@ -1,8 +1,13 @@
 # This file is organized into functional groups: Base, Android, Material, Google Maps Platform (GMP), and Testing.
 # Please maintain this structure when adding new dependencies or versions.
+
 [versions]
 # Base
-agp = "8.13.2" # Do not upgrade to 9.0.0 yet
+androidCompileSdk = "36"
+androidMinSdk = "23"
+androidTargetSdk = "36"
+
+agp = "9.0.0"
 dokka = "2.1.0"
 gradleMavenPublishPlugin = "0.36.0"
 jacoco-plugin = "0.2.1"
@@ -11,9 +16,6 @@ kotlinxCoroutines = "1.10.2"
 
 # Android
 activitycompose = "1.12.2"
-androidCompileSdk = "36"
-androidMinSdk = "23"
-androidTargetSdk = "36"
 androidx-core = "1.17.0"
 androidx-startup = "1.2.0"
 compose-bom = "2026.01.00"
@@ -39,7 +41,7 @@ mockk = "1.14.9"
 mockkAndroid = "1.14.9"
 org-jacoco-core = "0.8.14"
 robolectric = "4.16.1"
-screenshot = "0.0.1-alpha12" # Do not upgrade to alpha13 (broken)
+screenshot = "0.0.1-alpha13"
 truth = "1.4.5"
 
 [libraries]
@@ -96,4 +98,4 @@ android-application = { id = "com.android.application", version.ref = "agp" }
 compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
 dokka = { id = "org.jetbrains.dokka", version.ref = "dokka" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
-screenshot = { id = "com.android.compose.screenshot", version.ref = "screenshot"}
+screenshot = { id = "com.android.compose.screenshot", version.ref = "screenshot"}

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME