feat: major feature updates and cleanup

- Add Redis architecture implementation
- Update browser extension functionality
- Clean up deprecated files and documentation
- Enhance backend handlers for auth, messages, search
- Add new configuration options and settings
- Update Docker and deployment configurations

browser-extension/browser-polyfill.js

@@ -0,0 +1,11 @@
+/* global chrome, browser */
+
+// Browser compatibility polyfill
+if (typeof browser === 'undefined' && typeof chrome !== 'undefined') {
+  browser = chrome;
+}
+
+// Export the browser object for use in other scripts
+if (typeof module !== 'undefined' && module.exports) {
+  module.exports = browser;
+}