feat(core): add CallType.AudioRoom for the audio_room server call type (#1685)

Adds CallType.AudioRoom (name = "audio_room") to mirror the same-named call
type used by React and iOS. Overrides sortPreset to LivestreamOrAudioRoom so
group audio chats self-sort with role-aware ordering out of the box.

Distinct from CallType.AudioCall (Android-specific 1:1 voice call). AudioCall
keeps SortPreset.Default — role-based sort doesn't apply to a two-participant
call.

Updates CallType.fromName to include AudioRoom in the lookup list.

Tests: extends CallTypeSortPresetTest with assertions for AudioRoom.sortPreset
and the fromName("audio_room") resolution path.

apiCheck vs develop: additive only.

Author: aleksandar-apostolov

stream-video-android-core/api/stream-video-android-core.api

@@ -9648,6 +9648,11 @@ public final class io/getstream/video/android/core/call/CallType$AudioCall : io/
 	public static final field INSTANCE Lio/getstream/video/android/core/call/CallType$AudioCall;
 }
 
+public final class io/getstream/video/android/core/call/CallType$AudioRoom : io/getstream/video/android/core/call/CallType {
+	public static final field INSTANCE Lio/getstream/video/android/core/call/CallType$AudioRoom;
+	public fun getSortPreset ()Lio/getstream/video/android/core/sorting/SortPreset;
+}
+
 public final class io/getstream/video/android/core/call/CallType$Companion {
 	public final fun fromName (Ljava/lang/String;)Lio/getstream/video/android/core/call/CallType;
 }

stream-video-android-core/src/main/kotlin/io/getstream/video/android/core/call/CallType.kt

@@ -30,6 +30,15 @@ sealed class CallType(val name: String) {
     object Livestream : CallType("livestream") {
         override val sortPreset: SortPreset get() = SortPreset.LivestreamOrAudioRoom
     }
+
+    /**
+     * Group audio chat (mirrors React's `audio_room` and iOS's `audio_room` call type).
+     * Distinct from [AudioCall], which is the Android-specific 1:1 voice call type.
+     */
+    object AudioRoom : CallType("audio_room") {
+        override val sortPreset: SortPreset get() = SortPreset.LivestreamOrAudioRoom
+    }
+
     object AudioCall : CallType("audio_call")
     object Default : CallType("default")
     object AnyMarker : CallType("ALL_CALL_TYPES")
@@ -43,7 +52,13 @@ sealed class CallType(val name: String) {
 
     companion object {
         fun fromName(name: String): CallType? {
-            return listOf(Livestream, AudioCall, Default, AnyMarker).find { it.name == name }
+            return listOf(
+                Livestream,
+                AudioRoom,
+                AudioCall,
+                Default,
+                AnyMarker,
+            ).find { it.name == name }
         }
     }
 }

stream-video-android-core/src/test/kotlin/io/getstream/video/android/core/sorting/CallTypeSortPresetTest.kt

@@ -37,14 +37,27 @@ class CallTypeSortPresetTest {
         assertThat(CallType.Livestream.sortPreset).isEqualTo(SortPreset.LivestreamOrAudioRoom)
     }
 
+    @Test
+    fun `AudioRoom call type uses SortPreset LivestreamOrAudioRoom`() {
+        // CallType.AudioRoom mirrors the "audio_room" server type used by React and iOS.
+        // It applies the same livestream-style sort (activity + roles).
+        assertThat(CallType.AudioRoom.sortPreset).isEqualTo(SortPreset.LivestreamOrAudioRoom)
+    }
+
     @Test
     fun `AudioCall call type falls back to SortPreset Default (1to1 audio is not livestream-like)`() {
-        // CallType.AudioCall represents a 1:1 audio call, not the React/iOS audio_room
-        // concept. Auto-applying LivestreamOrAudioRoom there would mis-sort the two
-        // participants. Stays on Default until a dedicated AudioRoom call type lands.
+        // CallType.AudioCall represents a 1:1 audio call, distinct from AudioRoom (group
+        // audio). Auto-applying LivestreamOrAudioRoom there would mis-sort the two
+        // participants. AudioCall stays on Default.
         assertThat(CallType.AudioCall.sortPreset).isEqualTo(SortPreset.Default)
     }
 
+    @Test
+    fun `fromName audio_room resolves to AudioRoom call type with LivestreamOrAudioRoom preset`() {
+        val resolved = CallType.fromName("audio_room")?.sortPreset ?: SortPreset.Default
+        assertThat(resolved).isEqualTo(SortPreset.LivestreamOrAudioRoom)
+    }
+
     @Test
     fun `Custom call types default to SortPreset Default`() {
         val custom = CallType.CustomCallType("my_custom_type")