Christian Byrne ffc0bf00ef fix: make SubgraphNode.graph nullable to allow proper cleanup (#8180) ...

## Summary

Fix `SubgraphNode.graph` property to match `LGraphNode` lifecycle
contract. Previously declared as `override readonly graph` via
constructor parameter promotion, which prevented `LGraph.remove()` from
setting `node.graph = null`.

## Changes

- Remove `readonly` from `SubgraphNode.graph` constructor parameter
- Add `override graph: GraphOrSubgraph | null` as class property  
- Add `NullGraphError` guard in `rootGraph` getter with node ID for
debugging
- Add null guards in `ExecutableNodeDTO.resolveInput` and
`imagePreviewStore.revokeSubgraphPreviews`
- Add test verifying `rootGraph` throws after node removal

## Testing

- Existing subgraph tests pass
- New test confirms `NullGraphError` is thrown when accessing
`rootGraph` on removed node

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Co-authored-by: Amp <amp@ampcode.com>

2026-02-03 16:18:48 -08:00

..

graph

fix: make SubgraphNode.graph nullable to allow proper cleanup (#8180)

2026-02-03 16:18:48 -08:00

schemas

Subgraph widget promotion fixes (#5911)

2025-10-06 13:11:14 -07:00