Add battery and speed fields to tracker-db workflow

- Add battery and speed fields to Location processing node
- Add battery and speed fields to NocoDB storage
- Update API URL to home64.de domain
- Add new index_owntrack.html with battery/speed display

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

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

index.html

@@ -82,7 +82,7 @@
         }).addTo(map);
 
         // API URL - anpassen an deine Domain
-        const API_URL = 'https://n8n.unixweb.eu/webhook/location';
+        const API_URL = 'https://n8n.unixweb.home64.de/webhook/location';
 
         // Auto-Refresh State
         let autoRefreshEnabled = true;