Frontend update

client/src/components/MoonDot.jsx

@@ -0,0 +1,9 @@
+// The little glowing moon used in the logo, login, and maintenance screens.
+export default function MoonDot({ size = 13, glow = 0.45 }) {
+  return (
+    <span
+      className="moon"
+      style={{ width: size, height: size, boxShadow: `0 0 ${size * 0.8}px rgba(216,226,239,${glow})` }}
+    />
+  )
+}