Feature/Include const_eval layer when flattening

[dcblundell]

Adds a new function that runs when flatten layers is requested which will put anything under the const_eval namespace into its own layer called const_eval.

As it duplicates some existing functionality, some data processing has been moved into reusable functions.

Closes #79.

[Copilot]

Pull request overview

This PR adds functionality to preserve the const_eval layer grouping when flattening graph layers in Model Explorer. The feature addresses issue #79, where const eval graphs were being lost during flattening, making visualization complex.

Changes:

• Added addSeparateConstEvalLayer function that reorganizes nodes with "const_eval" in their namespace into a dedicated layer
• Refactored duplicate single-child group node removal logic into reusable removeSingleChildGroupNodes function
• Added removeFromParentOrRoot helper function for node relationship management

Reviewed changes

Copilot reviewed 1 out of 5 changed files in this pull request and generated 2 comments.

File	Description
src/ui/src/components/visualizer/worker/graph_processor.ts	Implements const_eval layer preservation logic and refactors existing code for reusability
src/server/package/src/model_explorer/web_app/index.html	Build artifact update (script filename change)

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 5 changed files in this pull request and generated 5 comments.

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[Copilot]

Consider adding a filter to handle any potential undefined nodes. While createGroupNodeForNamespace should create all nodes in seenNamespaces, adding a safety check would make the code more robust:
.filter(node => node != null) after the map operation.

Suggested change

	...Array.from(seenNamespaces).map(ns => modelGraph.nodesById[this.getGroupNodeIdFromNamespace(ns)]),
	...Array.from(seenNamespaces)
	.map(ns => modelGraph.nodesById[this.getGroupNodeIdFromNamespace(ns)])
	.filter(node => node != null),

[Copilot]

When restoring the namespace hierarchy, consider updating savedNamespace to match the restored namespace. Looking at line 625 in removeSingleChildGroupNodes, when node namespaces are updated, savedNamespace is also updated. For consistency, add:
node.savedNamespace = node.namespace;
after line 495.

Suggested change

	node.namespace = node.fullNamespace || node.namespace;
	node.namespace = node.fullNamespace || node.namespace;
	node.savedNamespace = node.namespace;

[Copilot]

If a node has namespace exactly equal to "const_eval", then getAncestorNamespaces will return ["const_eval"], and the loop at lines 501-503 will call createGroupNodeForNamespace with namespace "const_eval". This will try to create a group node with ID "const_eval___group___", which is the same ID as the root const_eval group node created at line 474. This causes a duplicate node in modelGraph.nodes and overwrites the original node in modelGraph.nodesById.

To fix this, add "const_eval" to seenNamespaces before the loop:
seenNamespaces.add(CONST_EVAL_LAYER_NAME);
after line 488.