fix: skip Tauri updater in Electron, add debug logging for routing

src/index.tsx

@@ -42,11 +42,24 @@ if ('serviceWorker' in navigator) {
   });
 }
 
+/**
+ * Check if we're running in Electron (not Tauri)
+ * Electron exposes window.electron in preload.js
+ */
+const isElectron = (): boolean => 'electron' in window;
+
 /**
  * Check for app updates using Tauri updater
  * Prompts user if update is available and handles download/install
+ * Note: Electron has its own auto-updater in main.js, so skip for Electron
  */
 async function checkForUpdates() {
+  // Skip if in Electron - Electron has its own auto-updater
+  if (isElectron()) {
+    console.log('Update check skipped - Electron handles updates natively');
+    return;
+  }
+
   // Only run in Tauri context
   if (!isTauri()) {
     console.log('Update check skipped - not running in Tauri');