Update Schema for YAML validation of the EDL #1084
Description
We need to update and improve the ensemble-react schema to enhance developer experience and validation feedback. This includes updating the schema definitions, improving code invalidation logic, and providing clearer error messages and suggestions.
Current schema validation is limited and often throws incorrect errors.
Improving this will:
- Catch issues earlier during development
- Guide users with more descriptive errors
- Make the system more robust and easier to extend