Agent-service auto-layout ranksep inconsistent with frontend

[bobbai00]

What happened?

agent-service/src/agent/util/auto-layout.ts and frontend/src/app/workspace/service/workflow-graph/model/joint-graph-wrapper.ts both use dagre for auto-layout, but with different ranksep values:

• Frontend (autoLayoutJoint): rankSep: 80
• Agent-service (LAYOUT_CONFIG): ranksep: 100

Result: workflows laid out by the agent have visibly larger horizontal gaps between operators than workflows laid out by the user via the frontend's auto-layout button. nodesep (100) and edgesep (150) already match.

How to reproduce?

1. Build the same workflow twice — once via the frontend's auto-layout, once via an agent-service tool that calls autoLayoutWorkflow.
2. Compare operator positions; the agent-laid-out version is wider.

Version

1.1.0-incubating (Pre-release/Master)

Possible fix

Change ranksep in agent-service/src/agent/util/auto-layout.ts from 100 to 80 to match the frontend.