Feature: Visualization script for the evolution tree from a checkpoint

[jvm123]

The scripts/visualizer.py starts a flask webserver. In the web browser, a visualization of the evolution tree is available, with individual program data apparent in a tooltip. Live update and zoom is supported for large graphs. Upon double click, the program info opens in a new tab.

The script watches a folder structure (default examples/) for the newest checkpoint directory. A specific checkpoint directory can also be passed to the script.

The script is fully independent from the remaining code base and relies on the existing checkpoint files.

[jvm123]

Note for another day or for a D3 wizard out there:
Other visualizations may be more useful, e.g., the nodes on a scale that shows overall metric score vs generation.
Some filter/highlight options may be nice.
Also not visualized is the migration between islands, etc.

[codelion]

Thanks for adding this, I actualy built this https://evovisual-advanced-evolutionary-concepts-577160257370.us-west1.run.app/ to explain about GA and AlphaEvolve at a talk recently. Having a good visualization can really help users figure out what is happening.

[jvm123]

Nice work! And thanks for the input / inspiration.
I am working on more features for this.

[jvm123]

I added many new features to the frontend. A new visualization shows the score of the program nodes on a graph.
View a static export with a demo dataset at https://jvm123.github.io/openevolve/.