Convex Developers' Guide to Pixeltable: Queries, Mutations, Actions, and Where the Mental Models Diverge

If you know Convex (queries, mutations, actions, and reactive subscriptions), this guide maps those primitives onto Pixeltable. We use the help-desk mental model from Database School’s Convex course as a parallel walkthrough, with side-by-side code and an honest cheat sheet for full-stack developers building AI-heavy backends.