feat(extend-app-start): Add setData and isExtended to AppStartExtension

Move these component accessors into the component-extraction PR (they were
introduced later in the wiring PR). Keeps the full AppStartExtension surface
and its unit tests together here; the wiring PR only consumes them. Inert on
its own. Regenerated apiDump.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: buenaflor

sentry-android-core/api/sentry-android-core.api

@@ -193,6 +193,8 @@ public final class io/sentry/android/core/AppStartExtension : io/sentry/IAppStar
 	public fun getExtendedAppStartSpan ()Lio/sentry/ISpan;
 	public fun getExtendedEndTime ()Lio/sentry/SentryDate;
 	public fun isActive ()Z
+	public fun isExtended ()Z
+	public fun setData (Ljava/lang/String;Ljava/lang/Object;)V
 	public fun setExtendAppStartListener (Lio/sentry/android/core/AppStartExtension$ExtendAppStartListener;)V
 }
 

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

@@ -80,6 +80,19 @@ public void extendAppStart() {
     }
   }
 
+  /**
+   * Sets data on the owned (eager) transaction if it is still open. Used to attach the screen name
+   * once the first activity is known, since the transaction is created in {@code onCreate} before
+   * any activity exists.
+   */
+  public void setData(final @NotNull String key, final @Nullable Object value) {
+    try (final @NotNull ISentryLifecycleToken ignored = lock.acquire()) {
+      if (extendedTransaction != null && !extendedTransaction.isFinished()) {
+        extendedTransaction.setData(key, value);
+      }
+    }
+  }
+
   @Override
   public void finishExtendedAppStart() {
     try (final @NotNull ISentryLifecycleToken ignored = lock.acquire()) {
@@ -108,6 +121,16 @@ public boolean isActive() {
     }
   }
 
+  /**
+   * Whether this app start was extended at all, regardless of finish or deadline state. Used by the
+   * event processor to decide whether to apply the never-shorten vital logic.
+   */
+  public boolean isExtended() {
+    try (final @NotNull ISentryLifecycleToken ignored = lock.acquire()) {
+      return extendedSpan != null;
+    }
+  }
+
   public void finishTransaction(final @NotNull SentryDate endTimestamp) {
     try (final @NotNull ISentryLifecycleToken ignored = lock.acquire()) {
       final @Nullable ITransaction transaction = extendedTransaction;

sentry-android-core/src/test/java/io/sentry/android/core/AppStartExtensionTest.kt

@@ -135,6 +135,18 @@ class AppStartExtensionTest {
     assertFalse(ext.isActive)
   }
 
+  @Test
+  fun `isExtended stays true once extended, even after the transaction finishes`() {
+    val ext = extension(windowOpen = true)
+    assertFalse(ext.isExtended)
+    val (txn, _) = ext.registerHandOver()
+    ext.extendAppStart()
+    assertTrue(ext.isExtended)
+    whenever(txn.isFinished).thenReturn(true)
+    assertFalse(ext.isActive)
+    assertTrue(ext.isExtended)
+  }
+
   @Test
   fun `finishTransaction finishes the transaction at the given timestamp`() {
     val ext = extension(windowOpen = true)