Add proper bounds to nested scenes for correct scaling

- Set 1600x900 bounds on nested scenes when added to parent scenes
- Use OBS_BOUNDS_SCALE_INNER to scale content to fit within bounds
- Center alignment for proper positioning in source switchers
- Ensures stream scenes scale correctly to match ss_large dimensions

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

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

lib/obsClient.js

@@ -401,12 +401,28 @@ async function createStreamGroup(groupName, streamName, teamName, url) {
     
     if (!nestedSceneInTeam) {
       try {
-        await obsClient.call('CreateSceneItem', {
+        const { sceneItemId } = await obsClient.call('CreateSceneItem', {
           sceneName: groupName,
           sourceName: streamGroupName,
           sceneItemEnabled: true
         });
         console.log(`Added nested scene "${streamGroupName}" to team scene "${groupName}"`);
+        
+        // Set bounds to 1600x900 to match the source switcher dimensions
+        await obsClient.call('SetSceneItemTransform', {
+          sceneName: groupName,
+          sceneItemId: sceneItemId,
+          sceneItemTransform: {
+            alignment: 5, // Center alignment
+            boundsAlignment: 0, // Center bounds alignment
+            boundsType: 'OBS_BOUNDS_SCALE_INNER', // Scale to fit inside bounds
+            boundsWidth: 1600,
+            boundsHeight: 900,
+            scaleX: 1.0,
+            scaleY: 1.0
+          }
+        });
+        console.log(`Set bounds for nested scene to 1600x900`);
       } catch (e) {
         console.error('Failed to add nested scene to team scene:', e.message);
       }