UI/UX improvements to the Crossflow Diagram Editor

The Crossflow Diagram Editor is a workflow authoring tool, but today some core interactions around building and validating workflows can be improved to make editing faster and clearer. This project will improve the editor’s UI/UX by making connection authoring more intuitive, providing stronger real-time feedback for valid and invalid connections, and polishing key flows such as running, testing, and resetting workflows. The project will focus on improving correctness, responsiveness, and discoverability while building on the existing frontend validation and editor architecture. Deliverables will include improved drag-and-drop interaction feedback, filtered add-operation suggestions, more responsive run/test dialogs, additional automated tests for key editor behaviors, and updated documentation/demo materials. These improvements will make Crossflow easier for both new and existing users to adopt and will provide a stronger foundation for future validation and execution-time tooling.