docs: Update README to v4.7.53 with Desktop Edition and roadmap updates

- Update version to v4.7.53
- Add Desktop Edition documentation (Windows, macOS, Linux)
- Update roadmap with all versions and dates
- Add mobile apps information (Q1 2026)
- Expand security and development sections
- Update URLs to securebit.chat domain

src/notifications/SecureNotificationManager.js

@@ -545,6 +545,9 @@ class SecureP2PChat {
     
     const textEl = document.createElement('span');
     textEl.textContent = message.text;
+    textEl.style.wordWrap = 'break-word';
+    textEl.style.overflowWrap = 'break-word';
+    textEl.style.whiteSpace = 'normal';
     
     const timeEl = document.createElement('small');
     timeEl.textContent = new Date(message.timestamp).toLocaleTimeString();