refactor: migrate to recent openiap modules (#3019)

Organize OpenIAP module with `openiap-versions.json`.

```json
{
  "apple": "1.2.2",
  "google": "1.2.6",
  "gql": "1.0.8"
}
```

Migrate to `openiap-apple`, `openiap-google`, and `openiap-gql` to
following version.

Updates genuinely follows https://github.com/hyochan/expo-iap/releases


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* iOS: fetch promoted product, get/refresh App Store receipt, deep-link
to subscriptions. Android: storefront and deep-link helpers. Example
app: Loading, PurchaseDetails, PurchaseSummaryRow, revamped
Purchase/Subscription screens.
* **Refactor**
* Improved structured, redacted diagnostics and more consistent
cross‑platform error handling and deduplication.
* **Documentation**
  * Clarified Android dependency guidance; bumped OpenIAP versions.
* **Chores**
* Added centralized OpenIAP version file and dynamic version resolution;
package script update.
* **Tests**
* Added/updated tests for receipts, deeplink fallbacks, dynamic
versions, and example flows.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: hyochan

NitroIap.podspec

@@ -1,6 +1,16 @@
 require "json"
 
 package = JSON.parse(File.read(File.join(__dir__, "package.json")))
+versions_path = File.join(__dir__, "openiap-versions.json")
+unless File.exist?(versions_path)
+  raise "NitroIap: Missing openiap-versions.json. Add the file to manage native dependency versions."
+end
+
+versions = JSON.parse(File.read(versions_path))
+apple_version = versions["apple"]
+unless apple_version.is_a?(String) && !apple_version.strip.empty?
+  raise "NitroIap: 'apple' version missing or invalid in openiap-versions.json"
+end
 
 Pod::Spec.new do |s|
   s.name         = "NitroIap"
@@ -32,7 +42,7 @@ Pod::Spec.new do |s|
   s.dependency 'React-jsi'
   s.dependency 'React-callinvoker'
   # OpenIAP Apple for StoreKit 2 integration
-  s.dependency 'openiap', '1.1.12'
+  s.dependency 'openiap', apple_version
 
   install_modules_dependencies(s)
 end

README.md

@@ -90,11 +90,11 @@ Before installing React Native IAP, make sure you have:
 
 #### Android Configuration
 
-Add the OpenIAP Google library to your `android/app/build.gradle` dependencies:
+Add the OpenIAP Google library to your `android/app/build.gradle` dependencies. React Native IAP pins the native module versions in `openiap-versions.json` so Android, iOS, and tooling stay in sync:
 
 ```gradle
 dependencies {
-    implementation "io.github.hyochan.openiap:openiap-google:1.1.12"
+    implementation "io.github.hyochan.openiap:openiap-google:1.2.6"
 }
 ```
 

android/build.gradle

@@ -1,3 +1,5 @@
+import groovy.json.JsonSlurper
+
 buildscript {
   repositories {
     google()
@@ -19,6 +21,27 @@ def isNewArchitectureEnabled() {
   return rootProject.hasProperty("newArchEnabled") && rootProject.getProperty("newArchEnabled") == "true"
 }
 
+def resolveOpenIapVersionsFile() {
+  def candidates = [
+    new File(projectDir.parentFile, 'openiap-versions.json'),
+    new File(rootDir.parentFile ?: rootDir, 'openiap-versions.json'),
+    new File(rootProject.projectDir.parentFile ?: rootProject.projectDir, 'openiap-versions.json')
+  ]
+  return candidates.find { it.exists() }
+}
+
+def openiapVersionsFile = resolveOpenIapVersionsFile()
+if (openiapVersionsFile == null) {
+  throw new GradleException("react-native-iap: Unable to locate openiap-versions.json")
+}
+
+def openiapVersions = new JsonSlurper().parse(openiapVersionsFile)
+def googleVersion = (openiapVersions instanceof Map) ? openiapVersions.google : null
+if (!(googleVersion instanceof String) || !googleVersion.trim()) {
+  throw new GradleException("react-native-iap: 'google' version missing or invalid in openiap-versions.json")
+}
+def googleVersionString = googleVersion.trim()
+
 apply plugin: "com.android.library"
 apply plugin: 'org.jetbrains.kotlin.android'
 
@@ -155,7 +178,7 @@ dependencies {
 
   // Kotlin coroutines
   implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.9.0'
-  implementation 'io.github.hyochan.openiap:openiap-google:1.1.12'
+  implementation "io.github.hyochan.openiap:openiap-google:${googleVersionString}"
 }
 
 configurations.all {