This is a meta bug for tracking the "backend" of garden-o-matic. Specifically, garden-o-matic includes a local HTTP server that can make various changes to your working copy, such as change test baselines, mark tests as failing, and filing bugs. This bug tracks those aspects of the tool.
The backend has been working great. We might need to iterate some more on performance for large rebaselines (i.e., more than a hundred results), but we can do that outside the context of this meta bug.