fix(android): fix build — add prefab, NitroModules dep, remove memorySize

Three issues preventing Android compilation:

1. build.gradle missing `prefab true` — CMake couldn't find fbjni via
   find_package() because prefab integration wasn't enabled
2. build.gradle missing `implementation project(":react-native-nitro-modules")`
   — Kotlin couldn't resolve com.margelo.nitro.core.* imports
3. HybridUnzip/UnzipTask/ZipTask had `override val memorySize` but the
   Nitro 0.34 generated specs don't declare this property

Modeled after react-native-mmkv's working Android build.gradle.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: isaacrowntree

android/build.gradle

@@ -30,6 +30,7 @@ android {
     externalNativeBuild {
       cmake {
         cppFlags "-O2 -frtti -fexceptions -Wall -fstack-protector-all"
+        arguments "-DANDROID_STL=c++_shared"
         abiFilters "armeabi-v7a", "arm64-v8a", "x86", "x86_64"
       }
     }
@@ -43,6 +44,29 @@ android {
     jvmTarget = '17'
   }
 
+  packagingOptions {
+    excludes = [
+      "META-INF",
+      "META-INF/**",
+      "**/libNitroModules.so",
+      "**/libc++_shared.so",
+      "**/libfbjni.so",
+      "**/libjsi.so",
+      "**/libfolly_json.so",
+      "**/libfolly_runtime.so",
+      "**/libglog.so",
+      "**/libhermes.so",
+      "**/libreactnative.so",
+      "**/libreactnativejni.so",
+      "**/libturbomodulejsijni.so",
+      "**/libreact_nativemodule_core.so",
+    ]
+  }
+
+  buildFeatures {
+    prefab true
+  }
+
   sourceSets {
     main {
       java.srcDirs += ['src/main/java']
@@ -64,6 +88,7 @@ repositories {
 dependencies {
   implementation "com.facebook.react:react-android:+"
   implementation "com.facebook.react:react-native:+"
+  implementation project(":react-native-nitro-modules")
   implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.3"
   // zip4j — needed for password-protected zip/unzip (java.util.zip has no password API)
   implementation "net.lingala.zip4j:zip4j:2.11.5"

android/src/main/java/com/margelo/nitro/unzip/HybridUnzip.kt

@@ -9,8 +9,6 @@ import com.facebook.proguard.annotations.DoNotStrip
 @DoNotStrip
 @Keep
 class HybridUnzip : HybridUnzipSpec() {
-  override val memorySize: Long = 0L
-
   override fun extract(zipPath: String, destinationPath: String): HybridUnzipTaskSpec {
     return HybridUnzipTask(zipPath, destinationPath)
   }

android/src/main/java/com/margelo/nitro/unzip/HybridUnzipTask.kt

@@ -29,8 +29,6 @@ class HybridUnzipTask(
   private val password: String? = null
 ) : HybridUnzipTaskSpec() {
 
-  override val memorySize: Long = 0L
-
   override val taskId: String = "unzip_${System.nanoTime()}_${(Math.random() * 1e9).toLong()}"
 
   private var progressCallback: ((UnzipProgress) -> Unit)? = null

android/src/main/java/com/margelo/nitro/unzip/HybridZipTask.kt

@@ -26,8 +26,6 @@ class HybridZipTask(
   private val password: String? = null
 ) : HybridZipTaskSpec() {
 
-  override val memorySize: Long = 0L
-
   override val taskId: String = "zip_${System.nanoTime()}_${(Math.random() * 1e9).toLong()}"
 
   private var progressCallback: ((ZipProgress) -> Unit)? = null

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-nitro-unzip",
-  "version": "0.2.5",
+  "version": "0.2.6",
   "description": "High-performance ZIP extraction for React Native, powered by Nitro Modules",
   "main": "lib/commonjs/index.js",
   "module": "lib/module/index.js",