Feature: Cross-Conversation Graph Map

[CWolfs]

Add a graph/map view for understanding conversation structure across a folder.

The current tree view is good for editing a single conversation, but it is hard to see links, loops, and sideloaded conversations at a higher level.

For this change:

• Add a read-only map view for the current conversation
• Show prompt nodes, response branches, loops, and root entry points
• Highlight action-heavy and condition-heavy nodes
• Show Sideload Conversation edges to other loaded conversations
• Mark broken links or missing sideload targets clearly
• Allow selecting a graph node to jump back to that node in the normal editor
• Keep the normal tree editor as the main editing surface