refactor: code cleanup

src/utils/setting-utils.ts

@@ -0,0 +1,19 @@
+export function getDefaultHue(): number {
+  const fallback = '250'
+  const configCarrier = document.getElementById('config-carrier')
+  return parseInt(configCarrier?.dataset.hue || fallback)
+}
+
+export function getHue(): number {
+  const stored = localStorage.getItem('hue')
+  return stored ? parseInt(stored) : getDefaultHue()
+}
+
+export function setHue(hue: number): void {
+  localStorage.setItem('hue', String(hue))
+  const r = document.querySelector(':root')
+  if (!r) {
+    return
+  }
+  r.style.setProperty('--hue', hue)
+}