some build stuff and quick fix

android/build.gradle.kts

@@ -1,3 +1,11 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+plugins {
+    // Ensure these match your Flutter Gradle plugin requirements
+    id("com.android.application") version "8.9.1" apply false
+    id("org.jetbrains.kotlin.android") version "2.1.0" apply false
+}
+
 allprojects {
     repositories {
         google()
@@ -5,18 +13,17 @@ allprojects {
     }
 }
 
-val newBuildDir: Directory =
-    rootProject.layout.buildDirectory
-        .dir("../../build")
-        .get()
-rootProject.layout.buildDirectory.value(newBuildDir)
+// Optional: custom build directory (keep this if you really need a shared build folder)
+val newBuildDir = rootProject.layout.buildDirectory.dir("../../build").get()
+rootProject.layout.buildDirectory.set(newBuildDir)
 
 subprojects {
-    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
-    project.layout.buildDirectory.value(newSubprojectBuildDir)
+    val newSubprojectBuildDir = newBuildDir.dir(name)
+    layout.buildDirectory.set(newSubprojectBuildDir)
 }
+
 subprojects {
-    project.evaluationDependsOn(":app")
+    evaluationDependsOn(":app")
 }
 
 tasks.register<Delete>("clean") {