How to Handle IndexedDB "VersionError" and Blocked Schema Upgrade Events Across Multiple Tabs

// Resilient Multi-Tab IndexedDB Connection Manager:
export function openResilientDatabase(name: string, version: number): Promise<IDBDatabase> {
  return new Promise((resolve, reject) => {
    const request = indexedDB.open(name, version);

    request.onupgradeneeded = (event) => {
      const db = request.result;
      console.log(`[IDB] Upgrading database ${name} to version ${version}`);
      if (!db.objectStoreNames.contains('telemetry_events')) {
        db.createObjectStore('telemetry_events', { keyPath: 'id', autoIncrement: true });
      }
    };

    request.onsuccess = () => {
      const db = request.result;

      // CRITICAL: Handle versionchange from other tabs attempting to upgrade
      db.onversionchange = () => {
        console.warn('[IDB] Another tab initiated a schema upgrade. Closing connection...');
        db.close();
        alert('Application updated in another window. Reloading to sync data...');
        window.location.reload();
      };

      resolve(db);
    };

    request.onblocked = () => {
      console.error('[IDB] Upgrade blocked! Please close other open tabs of this application.');
      alert('Database upgrade blocked by open tabs. Please close other tabs to continue.');
    };

    request.onerror = () => reject(request.error);
  });
}