Generates a structured pre-production reference brief for VFX elements before opening any simulation tool. Triggers on "VFX reference", "fire reference", "explosion brief", "smoke reference", "Niagara reference", "Houdini sim ref", "I'm about to build a VFX effect", "need references for a simulation". Works with Niagara, Houdini, EmberGen, Blender geometry nodes, Unity VFX Graph.
