Even though Project Wall-E may very well mean that I won't be diving aggressively into QL internals in the short term, I'm still interested in hearing what you've been working on, just out of curiosity.
Just to pick a few PRs that I see you've done:
https://git.semmle.com/Semmle/code/pull/36653 I'm kind of interested in how fastTC works at all, not very familiar with that area
https://git.semmle.com/Semmle/code/pull/36751 Interested in how your experience with this refactor went, what obstacles there were, etc.
https://git.semmle.com/Semmle/code/pull/36421 Similarly with uniqueness aggregate