Auditor adds nodes to wrong Classify branch

Auditor adds nodes to wrong Classify branch consistently

Observed during: mcs-workflows audit (UC4/UC5), 2026-06-20

Problem: When clicking the "+" connector on a Classify node branch to add a downstream node (e.g., Agent), the auditor added the node to the wrong branch twice (Quote Request instead of Supplier Delay). The user had to intervene both times.

Root cause: The "+" buttons for each Classify branch are vertically stacked and close together on the canvas. Coordinate-based clicking is unreliable because:

• Branch order can shift depending on zoom/scroll state
• The click target area is small
• No verification is done after the node is added to confirm correct placement

Suggested fix:

1. After adding a node via "+", verify which branch it connected to by reading the upstream connection label in the node config panel
2. If wrong branch, delete and retry with adjusted coordinates
3. Consider using the workflow designer API/model to specify target branch programmatically rather than coordinate clicking
4. Alternatively, click the branch label text first to highlight/select the branch, then look for the "+" appearing specifically on that branch

workflow designer とその node config panel を使って Classify-branch フローを再現し、積み重なった "+" コネクタに焦点を当てる。まず、workflow designer API/model で対象のブランチを特定できるか確認する。できない場合は、ノードを追加した後に upstream 接続のラベルを確認する。ユーザーの介入なしに downstream ノードが選択したブランチへ一貫して接続されれば完了とする。