Add play short-cut button

vav2/platforms/android/applications/vav2player/app/src/main/java/com/vavcore/player/MainActivity.java

@@ -370,6 +370,11 @@ public class MainActivity extends AppCompatActivity {
                 openFilePicker();
             }
 
+            @Override
+            public void onTestButtonClicked() {
+                loadAndPlayTestVideo();
+            }
+
             @Override
             public void onPlayPauseClicked() {
                 VulkanVideoView.PlaybackState state = vulkanVideoView.getPlaybackState();
@@ -644,6 +649,40 @@ public class MainActivity extends AppCompatActivity {
         return String.format("%02d:%02d", minutes, seconds);
     }
 
+    private void loadAndPlayTestVideo() {
+        String testFilePath = "/storage/emulated/0/Download/output.webm";
+        String fileName = "output.webm";
+
+        android.util.Log.i(TAG, "Test button clicked: Loading " + testFilePath);
+
+        boolean success = vulkanVideoView.loadVideo(testFilePath);
+        if (success) {
+            VideoInfo info = vulkanVideoView.getVideoInfo();
+            if (info != null) {
+                statusText.setText(String.format("Test: %s (%dx%d, %.1f fps)",
+                    fileName, info.width, info.height, info.frameRate));
+                vulkanVideoView.setVideoSize(info.width, info.height);
+
+                // Set video duration for progress tracking
+                videoDurationUs = info.durationUs;
+
+                // Update overlay with video info
+                videoPlayerOverlay.setVideoTitle("TEST: " + fileName);
+                videoPlayerOverlay.updateProgress(0, videoDurationUs);
+                videoPlayerOverlay.showPlaybackControls();
+                videoPlayerOverlay.show();
+
+                // Auto-start playback after a short delay
+                new android.os.Handler(android.os.Looper.getMainLooper()).postDelayed(() -> {
+                    playVideo();
+                    android.util.Log.i(TAG, "Test video playback started");
+                }, 200);
+            }
+        } else {
+            showError("Failed to load test video: " + testFilePath);
+        }
+    }
+
     private void setupSystemBars() {
         // Set up window insets listener to handle system bars properly
         ViewCompat.setOnApplyWindowInsetsListener(findViewById(android.R.id.content), (v, insets) -> {

vav2/platforms/android/applications/vav2player/app/src/main/java/com/vavcore/player/VideoPlayerOverlay.java

@@ -21,6 +21,7 @@ public class VideoPlayerOverlay extends FrameLayout {
     private ImageButton backButton;
     private TextView videoTitle;
     private ImageButton loadVideoButton;
+    private ImageButton testButton;
     private ImageButton optionsButton;
     private ImageButton centerPlayButton;
     private ImageButton playButton;
@@ -40,6 +41,7 @@ public class VideoPlayerOverlay extends FrameLayout {
     public interface OverlayListener {
         void onBackClicked();
         void onLoadVideoClicked();
+        void onTestButtonClicked();
         void onPlayPauseClicked();
         void onStopClicked();
         void onSeekTo(long positionUs);
@@ -64,6 +66,7 @@ public class VideoPlayerOverlay extends FrameLayout {
         backButton = findViewById(R.id.back_button);
         videoTitle = findViewById(R.id.video_title);
         loadVideoButton = findViewById(R.id.load_video_button);
+        testButton = findViewById(R.id.test_button);
         optionsButton = findViewById(R.id.more_options);
         centerPlayButton = findViewById(R.id.center_play_pause);
         playButton = findViewById(R.id.overlay_play_button);
@@ -91,6 +94,12 @@ public class VideoPlayerOverlay extends FrameLayout {
             }
         });
 
+        testButton.setOnClickListener(v -> {
+            if (listener != null) {
+                listener.onTestButtonClicked();
+            }
+        });
+
         optionsButton.setOnClickListener(v -> {
             if (listener != null) {
                 listener.onOptionsClicked();

vav2/platforms/android/applications/vav2player/app/src/main/res/layout/video_player_overlay.xml

@@ -62,6 +62,15 @@
             android:contentDescription="@string/content_description_load_button"
             android:tint="@android:color/white" />
 
+        <ImageButton
+            android:id="@+id/test_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@drawable/ic_play_arrow"
+            android:contentDescription="Test Button"
+            android:tint="#00FF00" />
+
         <ImageButton
             android:id="@+id/more_options"
             android:layout_width="48dp"