Fix version display with direct package.json reading

- Added direct package.json file reading instead of require caching
- Enhanced system status endpoint to always return current version
- Added manual refresh button to floating notification
- Implemented aggressive cache-busting for all version checks
- Added double-check system status after update completion
- Added detailed logging for version retrieval for debugging
- Improved error handling for package.json reading
- Added immediate user feedback for refresh operations

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

public/index.html

@@ -724,7 +724,10 @@
     <div id="floating-update-notification">
         <div>Update Available!</div>
         <div id="floating-update-version">New version available</div>
-        <button id="floating-update-button">Update Now</button>
+        <div class="button-container">
+            <button id="floating-update-button">Update Now</button>
+            <button id="floating-refresh-button" style="background-color: #4CAF50; margin-left: 10px;">Refresh Status</button>
+        </div>
     </div>
     
     <!-- JavaScript Files -->