Added lastSyncedStateRef to track the graph state that was last loaded/synced
for each document. This prevents stale comparisons when switching between
documents by ensuring dirty checks only run against the correct document's
state.
Changes:
- Track last synced state (nodes, edges, nodeTypes, edgeTypes) per document
- Skip dirty check if graph state belongs to a different document
- Compare current graph state against last synced state instead of active document
- Update last synced state reference when loading or saving changes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
