Implements the genlocke creation feature end-to-end: Genlocke and GenlockeLeg models with migration, POST /genlockes endpoint that creates the genlocke with all legs and auto-starts the first run, and a 4-step wizard UI (Name, Select Games with preset templates, Rules, Confirm) at /genlockes/new. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Generic single-database configuration.