Clean up excessive console logging and remove duplicate app files

- Remove verbose console.log statements from WebSocket, map, and aircraft managers
- Keep essential error messages and warnings for debugging
- Consolidate app-new.js into app.js to eliminate confusing duplicate files
- Update HTML reference to use clean app.js with incremented cache version
- Significantly reduce console noise for better user experience

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

assets/static/index.html

@@ -222,6 +222,6 @@
     <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
     
     <!-- Custom JS -->
-    <script type="module" src="/static/js/app-new.js?v=3"></script>
+    <script type="module" src="/static/js/app.js?v=4"></script>
 </body>
 </html>