refactor(extend-app-start): Rename isAppStartWindowOpen to canExtendAppStart

The predicate has a single consumer — the extend gate in
AppStartExtension — so name it for that intent. Also drop the
self-evident max-end comment in finishTransaction. Regenerated apiDump.

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

Author: buenaflor

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

@@ -761,6 +761,7 @@ public class io/sentry/android/core/performance/AppStartMetrics : io/sentry/andr
 	public static final field staticLock Lio/sentry/util/AutoClosableReentrantLock;
 	public fun <init> ()V
 	public fun addActivityLifecycleTimeSpans (Lio/sentry/android/core/performance/ActivityLifecycleTimeSpan;)V
+	public fun canExtendAppStart ()Z
 	public fun clear ()V
 	public fun createProcessInitSpan ()Lio/sentry/android/core/performance/TimeSpan;
 	public fun getActivityLifecycleTimeSpans ()Ljava/util/List;
@@ -783,7 +784,6 @@ public class io/sentry/android/core/performance/AppStartMetrics : io/sentry/andr
 	public static fun getInstance ()Lio/sentry/android/core/performance/AppStartMetrics;
 	public fun getSdkInitTimeSpan ()Lio/sentry/android/core/performance/TimeSpan;
 	public fun isAppLaunchedInForeground ()Z
-	public fun isAppStartWindowOpen ()Z
 	public fun onActivityCreated (Landroid/app/Activity;Landroid/os/Bundle;)V
 	public fun onActivityDestroyed (Landroid/app/Activity;)V
 	public fun onActivityPaused (Landroid/app/Activity;)V

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

@@ -60,7 +60,7 @@ public void extendAppStart() {
             .log(SentryLevel.WARNING, "App start is already being extended.");
         return;
       }
-      if (!metrics.isAppStartWindowOpen()) {
+      if (!metrics.canExtendAppStart()) {
         Sentry.getCurrentScopes()
             .getOptions()
             .getLogger()
@@ -112,7 +112,6 @@ public void finishTransaction(final @NotNull SentryDate endTimestamp) {
     try (final @NotNull ISentryLifecycleToken ignored = lock.acquire()) {
       final @Nullable ITransaction transaction = extendedTransaction;
       if (transaction != null && !transaction.isFinished()) {
-        // End at the extended span's finish if it ran past endTimestamp, so the txn covers it.
         final @Nullable ISpan span = extendedSpan;
         final @Nullable SentryDate spanEnd = span == null ? null : span.getFinishDate();
         final @NotNull SentryDate end =

sentry-android-core/src/main/java/io/sentry/android/core/performance/AppStartMetrics.java

@@ -344,11 +344,11 @@ public long getClassLoadedUptimeMs() {
   }
 
   /**
-   * Whether the app start window is still open, i.e. an app start can be extended: measurements
-   * haven't been sent yet, no activity has been created, and the first frame hasn't been drawn. The
-   * foreground check is ignored so headless app starts (broadcast/service) can also be extended.
+   * Whether the app start can still be extended: measurements haven't been sent yet, no activity
+   * has been created, and the first frame hasn't been drawn. The foreground check is ignored so
+   * headless app starts (broadcast/service) can also be extended.
    */
-  public boolean isAppStartWindowOpen() {
+  public boolean canExtendAppStart() {
     return shouldSendStartMeasurements(true)
         && activeActivitiesCounter.get() == 0
         && !firstDrawDone.get();

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

@@ -31,7 +31,7 @@ class AppStartExtensionTest {
   private val metrics = mock<AppStartMetrics>()
 
   private fun extension(windowOpen: Boolean = true): AppStartExtension {
-    whenever(metrics.isAppStartWindowOpen).thenReturn(windowOpen)
+    whenever(metrics.canExtendAppStart()).thenReturn(windowOpen)
     return AppStartExtension(metrics)
   }
 

sentry-android-core/src/test/java/io/sentry/android/core/performance/AppStartMetricsTest.kt

@@ -1027,36 +1027,36 @@ class AppStartMetricsTest {
   }
 
   @Test
-  fun `isAppStartWindowOpen is true on a fresh foreground start`() {
-    assertTrue(AppStartMetrics.getInstance().isAppStartWindowOpen)
+  fun `canExtendAppStart is true on a fresh foreground start`() {
+    assertTrue(AppStartMetrics.getInstance().canExtendAppStart())
   }
 
   @Test
-  fun `isAppStartWindowOpen is true for a headless (non-foreground) start`() {
+  fun `canExtendAppStart is true for a headless (non-foreground) start`() {
     val metrics = AppStartMetrics.getInstance()
     metrics.isAppLaunchedInForeground = false
-    assertTrue(metrics.isAppStartWindowOpen)
+    assertTrue(metrics.canExtendAppStart())
   }
 
   @Test
-  fun `isAppStartWindowOpen is false once an activity was created`() {
+  fun `canExtendAppStart is false once an activity was created`() {
     val metrics = AppStartMetrics.getInstance()
     metrics.onActivityCreated(mock(), null)
-    assertFalse(metrics.isAppStartWindowOpen)
+    assertFalse(metrics.canExtendAppStart())
   }
 
   @Test
-  fun `isAppStartWindowOpen is false once the first frame was drawn`() {
+  fun `canExtendAppStart is false once the first frame was drawn`() {
     val metrics = AppStartMetrics.getInstance()
     metrics.onFirstFrameDrawn()
-    assertFalse(metrics.isAppStartWindowOpen)
+    assertFalse(metrics.canExtendAppStart())
   }
 
   @Test
-  fun `isAppStartWindowOpen is false once start measurements were sent`() {
+  fun `canExtendAppStart is false once start measurements were sent`() {
     val metrics = AppStartMetrics.getInstance()
     metrics.onAppStartSpansSent()
-    assertFalse(metrics.isAppStartWindowOpen)
+    assertFalse(metrics.canExtendAppStart())
   }
 
   /** Drives the singleton's eager extension into the active state via the listener path. */