1080p Standard Quality Patch

Replace:
assets/studio.js
assets/guest.js

Now configured as:
- Guest input: 1920x1080, 30fps
- Guest publish bitrate: 5.5 Mbps
- Program Output canvas: 1920x1080, 30fps
- Program publish bitrate: 8 Mbps
- Audio: 48kHz mix target, 160 kbps publish
- Program Return requests HIGH quality and plays at 1.0 rate

Notes:
- The actual camera must support 1080p.
- User upload bandwidth should be at least 6-8 Mbps per guest for stable 1080p.
- Operator browser CPU/GPU must handle 1080p compositing.
