Fixes an issue where nodes from a previous document would persist when
creating a new document after closing all documents.
The problem occurred because:
1. When all documents were closed (activeDocumentId becomes null), the
graph store wasn't being cleared
2. When a new document was created, stale data from the old document
could contaminate the new document through race conditions
Changes:
- Clear nodes and edges from graph store when activeDocumentId is null
- Add safeguard to prevent saving stale graph data to newly created
documents before they've been fully loaded
- Maintain proper state tracking to prevent cross-document contamination
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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>
