Core creative engine — turns a calendar post into finished images or video using 4 modes (anchor-compose, enhance-extend, style-referenced, pure-creative) with brand assets, AI generation, and human approval before credits are spent. Triggers on "/compose-creative", "generate the creative", "make the image for P07", "produce this post", "create the visual", "compose this", or any time a calendar post needs its creative produced. Overlay text follows the pairing rule — it never echoes the caption.
