refactor: Remove unnecessary sentry-android-core dependency and use direct instantiation

- Remove sentry-android-core dependency from distribution module (only needs sentry module)
- Add distribution as compileOnly dependency in sentry-android-core
- Use direct DistributionIntegration instantiation instead of reflection
- Eliminates circular dependency and follows same pattern as other integrations

The distribution module only needs Integration/IScopes/SentryOptions from core sentry,
not anything from sentry-android-core, making the architecture cleaner.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: runningcode

sentry-android-core/build.gradle.kts

@@ -76,6 +76,7 @@ dependencies {
   compileOnly(projects.sentryAndroidFragment)
   compileOnly(projects.sentryAndroidTimber)
   compileOnly(projects.sentryAndroidReplay)
+  compileOnly(projects.sentryAndroidDistribution)
   compileOnly(projects.sentryCompose)
 
   // lifecycle processor, session tracking

sentry-android-core/src/main/java/io/sentry/android/core/AndroidOptionsInitializer.java

@@ -33,6 +33,7 @@
 import io.sentry.android.core.internal.util.SentryFrameMetricsCollector;
 import io.sentry.android.core.performance.AppStartMetrics;
 import io.sentry.android.fragment.FragmentLifecycleIntegration;
+import io.sentry.android.distribution.internal.DistributionIntegration;
 import io.sentry.android.replay.DefaultReplayBreadcrumbConverter;
 import io.sentry.android.replay.ReplayIntegration;
 import io.sentry.android.timber.SentryTimberIntegration;
@@ -393,21 +394,7 @@ static void installDefaultIntegrations(
       options.setReplayController(replay);
     }
     if (isDistributionAvailable) {
-      final Class<?> distributionIntegrationClass =
-          loadClass.loadClass(
-              "io.sentry.android.distribution.internal.DistributionIntegration",
-              options.getLogger());
-      if (distributionIntegrationClass != null) {
-        try {
-          options.addIntegration(
-              (io.sentry.Integration)
-                  distributionIntegrationClass.getDeclaredConstructor().newInstance());
-        } catch (Exception e) {
-          options
-              .getLogger()
-              .log(SentryLevel.ERROR, "Failed to instantiate DistributionIntegration", e);
-        }
-      }
+      options.addIntegration(new DistributionIntegration());
     }
     options
         .getFeedbackOptions()

sentry-android-distribution/build.gradle.kts

@@ -25,6 +25,5 @@ androidComponents.beforeVariants {
 
 dependencies {
   implementation(projects.sentry)
-  implementation(projects.sentryAndroidCore)
   implementation(kotlin(Config.kotlinStdLib, Config.kotlinStdLibVersionAndroid))
 }