Implement team name text overlays with refactored group structure

- Add createTextSource function with automatic OBS text input detection
- Implement createStreamGroup to create groups within team scenes instead of separate scenes
- Add team name text overlays positioned at top-left of each stream
- Refactor stream switching to use stream group names for cleaner organization
- Update setActive API to write stream group names to files
- Fix getActive API to return correct screen position data
- Improve team UUID assignment when adding streams
- Remove manage streams section from home page for cleaner UI
- Add vertical spacing to streams list to match teams page
- Support dynamic text input kinds (text_ft2_source_v2, text_gdiplus, etc.)

This creates a much cleaner OBS structure with 10 team scenes containing grouped
stream sources rather than 200+ individual stream scenes, while adding team
name text overlays for better stream identification.

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

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

lib/performance.ts

@@ -43,7 +43,9 @@ export function createStreamLookupMaps(streams: Array<{ id: number; obs_source_n
   const idToStreamMap = new Map<number, { id: number; obs_source_name: string; name: string }>();
   
   streams.forEach(stream => {
-    sourceToIdMap.set(stream.obs_source_name, stream.id);
+    // Generate stream group name to match what's written to files
+    const streamGroupName = `${stream.name.toLowerCase().replace(/\s+/g, '_')}_stream`;
+    sourceToIdMap.set(streamGroupName, stream.id);
     idToStreamMap.set(stream.id, stream);
   });