Add state.js module

public/js/state.js

@@ -0,0 +1,20 @@
+function loadPrefs() {
+  try { return JSON.parse(localStorage.getItem('zt_p') || '{}'); } catch (e) { return {}; }
+}
+
+export const state = {
+  TODAY: (() => { const d = new Date(); d.setHours(0,0,0,0); return d; })(),
+  goals: [],
+  prefs: loadPrefs(),
+  selDay: {},
+  addAmt: {},
+  renamingId: null,
+  renameVal: '',
+  collapsed: {},
+  userName: '',
+  isAdmin: false,
+};
+
+export function savePrefs() {
+  localStorage.setItem('zt_p', JSON.stringify(state.prefs));
+}