DESIGN BRIEF: Bharni Surya panels live or die on whether the sun reads as a deity disk and not a generic emoji — radial-mandala symmetry solves that by forcing every concentric ring and every wavy ray to mirror the last on a single vertical and horizontal axis. I chose the personified sun face over an abstract solar glyph because Ranti and Darbhanga wedding-wall tradition treats Surya as a guardian figure with human features — tilak, mustache, almond eyes — the way harvest and marriage ceremonies invoke the solar disk as witness. The concentric petal rings borrow Kohbar colour-band grammar without importing full wedding-chamber narrative: yellow-red inner band for heat, green-red outer band for growth, white-dot black band as the bindu fence between face and cosmos. Corner lotuses anchor the four directions the way Aripana floor diagrams anchor threshold space; the fish border is not decorative filler — clockwise swimming fish carry fertility and prosperity symbolism standard in Mithila Bharni panels and give the wide outer band a procession rhythm that flat geometric stripes cannot. Wavy rays instead of straight spokes because classical Mithila sun disks often treat radiance as flame-tongue movement, not compass lines.