src/utils/storage.js

const STORAGE_KEY = 'branchchat_state';

/**
 * Load the full app state from LocalStorage.
 * Returns null if nothing is stored or parsing fails.
 */
export function loadState() {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (!raw) return null;
    return JSON.parse(raw);
  } catch (err) {
    console.warn('[Storage] Failed to load state:', err);
    return null;
  }
}

/**
 * Save the full app state to LocalStorage.
 */
export function saveState(state) {
  try {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(state));
  } catch (err) {
    console.warn('[Storage] Failed to save state:', err);
  }
}

/**
 * Clear all stored state.
 */
export function clearState() {
  try {
    localStorage.removeItem(STORAGE_KEY);
  } catch (err) {
    console.warn('[Storage] Failed to clear state:', err);
  }
}