Bridge the new graph abstraction with existing Stage-based pipeline
system for backward compatibility.
- Add GraphAdapter class to map nodes to Stage implementations
- Handle effect intensity configuration (sets global effect state)
- Map camera modes to Camera factory methods (feed, scroll, horizontal, etc.)
- Auto-inject required dependencies (render, camera_update) via pipeline capabilities
- Support for all major node types: source, camera, effect, position, display
The adapter ensures that graphs seamlessly integrate with the existing
pipeline architecture while providing a cleaner abstraction layer.
