Door Open Part 1

Add this game-feel effect to my 2D game: Door Open — Light Spill.

Reference scene (context only — map it onto my own characters and sizes):
A side-view 2D scene with a door. Art is pixel art: the hero is 12×13 art pixels drawn at 7px (about 84×91px), standing 160px left of the door. Sizes are screen pixels; times are seconds; t = 0 is the moment the door starts to open. The door sits in a stone frame (100×132px, #3a3346 with #2a2433 mortar lines and a #4d4558 top edge); the doorway is 72×112px, dark #120c0a inside. The door leaf is wooden planks (#8a5a34 with #6b4a33 seams every 12px), two 8px iron bands (#3a3346) and a gold #FFC24B handle. Every second the door opens in 0.12s (easeOutCubic), stays open until 0.62s, closes over 0.62–0.85s and stays shut until the next second. While open, the doorway glows with a radial gradient from cream #fff6d8 at 95% in the middle to gold at 55% at the edges. The leaf swings on its left hinge: draw it narrower as it opens (down to 14% width) and darker (up to 45% black).

The effect:
As the door opens, spill the inside light toward the hero: a floor patch in rgba(255,226,168) at 28% (a trapezoid from the doorway sill out 200px toward the hero, 30px deep) and 5 gold rays at 35% fanning out from the doorway's left edge over a 0.9 rad spread, 6px thick, growing from 40px to 100px over the first 0.2s. …

The rest of this prompt — exact sizes, easing, colors and particle counts — and full prompts 2–6 are in the pack.