Stage 0 of the AI film pipeline — turn an idea into a director's brief before any script is written. Defines intent, genre, palette per location, the full inventory of variables that decide whether a generated shot is good (the "f(x)"), the shot-justification test, pacing/tension rules, and the continuity ledger. Use whenever a film, scene, or product trailer is being planned, or when generated shots "look fine but feel wrong".
