MegaJam prep: the toolchain is the game before the game

With the Epic MegaJam build window opening mid-November, the unglamorous work happens now: a clean Unreal project template, the AI tooling wired up and tested, and a packaging drill on a throwaway build so the real deadline never meets a first-time error.

Two rules from past jams: declare every pre-made asset up front, and record the gameplay video on day one of the build, not hour twenty-three. The trailer is a deliverable, not an afterthought.