Node Selection and Visual Feedback

Problem: The visual indication of which node is currently selected is too subtle (thin border), making it difficult to know which node is active, especially when the configuration panel is open.

Use Case: Users working with complex workflows need clear visual feedback about which node they're currently editing to avoid confusion and errors.

Proposed Solution: Implement more prominent visual indicators for selected nodes, such as stronger borders, different colors, or highlighting effects. 32:42-33:47