Add vignette of how cat-vrs enables fuzzy matching to documentation

[brendanreardon]

Feature description

On April 24th, 2025 @cmprocknow wrote in this Issue:

I'm in the Variant Level Matching meeting today, and the group is wondering how to implement fuzzy matching in the future (overlaps with Beacon too). It would be really useful/cool to show how one can use CatVar to describe the type of "fuzziness" allowed in a Beacon-type variant matching network, along with examples of what it might look like to send specific fuzzy matching queries around a network to find matching variants.

@DanielPuthawala also asked:

do you remember any specific examples of what sort of fuzzy matching they were looking to do?

An example illustration within documentation may be showing how querying by location or gene name enables matching within DefiningLocation and FeatureContext constraints, for example.

Contribution

None

[cmprocknow]

Here are the types of features the VLM group wants to use for matching across repos and their status in the Beacon API:

zygosity, "type per gene or region" where type = functional effect, and "type per gene or region" where type = CNV, SNP, etc. Variants in a particular genomic region might be an interesting set to take a crack at.