Bolometric light curves calculated with the multigroup radiation-hydrodynamics code HERACLES and tiled according to the model ejecta kinetic energy (one value per row), CSM density (one value of M˙ per column), and CSM extent (three values per panel, with the No-CSM counterpart shown as a dotted line). The x-axis origin is chosen to be when each model first brightens to a luminosity of 10⁴⁰ erg s⁻¹, as recorded at the outer grid boundary.