Add clickable relationship lines with selection and delete

Shipped

3 பிப்ரவரி, 2026 அன்று 1:48 AM UTC

Author

kamo

Commit

5ac9f8f

- Lines can now be clicked to select them (with wider hit area for easier clicking) - Selected lines highlight in amber/orange color with animated flowing gradient - Animation shows direction from source to destination (hue moving left to right) - Pressing Delete key removes the selected connection - Clicking canvas background clears selection - Added arrowhead marker for selected state in amber color - Physics state cleaned up when connection is deleted