Refactor statistics page and enhance logging

- Updated the layout and styling of the statistics page for better responsiveness and visual appeal.
- Introduced a new error page for 404 errors with user-friendly messaging and navigation options.
- Enhanced logging functionality to capture detailed events related to asset uploads, deletions, and HTTP requests.
- Implemented an AssetTracker to manage assets in memory, allowing for efficient tracking and retrieval.
- Improved the API for uploading and retrieving assets, ensuring better error handling and response formatting.
- Added auto-refresh functionality to the statistics page to keep data up-to-date.

data/html/view.html

@@ -17,8 +17,16 @@
     </div>
   </div>
 
-  <footer class="powered-by">
-    <span>Powered by: <img src="/logo.png" alt="ICSBox" class="footer-logo"></span>
+  <footer class="powered-by" style="display: flex; align-items: center">
+    <span style="flex: 1"></span>
+    <span>Powered by: <img src="/logo.png" alt="ICSBox" class="footer-logo" /></span>
+    <span style="flex: 1; text-align: right">
+      <a href="/stats" style="
+            color: var(--text-secondary);
+            font-size: 0.8em;
+            text-decoration: none;
+          ">📊 Stats</a>
+    </span>
   </footer>
 
   <!-- Zoom overlay -->
@@ -120,4 +128,4 @@
   </script>
 </body>
 
-</html>
+</html>