TITLE: Vitrail — Stained Glass Generator FILE: 045-stained-glass.html === PROMPT (exact prompt used) === Build "Vitrail — Stained Glass Generator". A tall Gothic lancet window (pointed-arch SVG clipPath) filled with a Voronoi tessellation computed in JavaScript (half-plane clipping is fine), where each cell is a pane of jewel-toned glass — ruby #9b111e, sapphire #0f52ba, emerald #046307, amber #ffbf00, amethyst #9966cc — with subtle internal texture (noise, bubbles, streaks) and thick dark lead came lines (#1a1a1a with a slight highlight). Light pours through: the glass glows and coloured light patches are cast, blurred, onto a stone floor below, shifting as a "sun angle" slider moves. Interaction: click inside the window to add a cell (it splits smoothly); drag cell sites to watch the leading reflow; a "Rose window" mode switches to a circular window with radially symmetric cells; palettes (Chartres blues, Sunset, Modern pastel). The surrounding stone tracery is drawn in SVG with carved shading. Typography: a classical inscriptional serif with an illuminated initial letter drawn in SVG. SHARED REQUIREMENTS (apply to every page in this 100-page collection): 1. One standalone HTML5 file. All CSS inline in