The optional final polish: five refinements

The bolt deepens to saturated gold over a dark amber glow; the splash
throws a wider crown of five droplets over a broader pool; the
fireworks lose their protractor — uneven angles, lengths, sizes, and
staggered timing, as a real burst has; the portal-cell's void gains
turning swirl arms so the dark center reads as motion, not blur; the
streak narrows and softens so its peak frame no longer resembles a
drawn white line.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/web/src/fx-sprites/Bolt.svelte

@@ -45,10 +45,10 @@
 <style>
   .bolt .wide {
     fill: none;
-    stroke: #ffe94d;
-    stroke-width: 5;
+    stroke: #e6a812;
+    stroke-width: 5.5;
     stroke-linejoin: round;
-    opacity: 0.55;
+    opacity: 0.75;
   }
   .bolt .fork {
     fill: none;
@@ -59,9 +59,10 @@
   .bolt .core {
     fill: none;
     stroke: #fffdf0;
-    stroke-width: 1.8;
+    stroke-width: 2;
     stroke-linejoin: round;
   }
+  .bolt .fork { stroke: #f5d54a; }
   .bolt { animation: bolt-flicker 0.5s steps(2, jump-none) forwards; }
   @keyframes bolt-flicker {
     0% { opacity: 0; } 15% { opacity: 1; } 40% { opacity: 0.3; }