WIP: add Electron platform configuration to Capacitor

- Add electron platform section to capacitor.config.json
- Configure deep linking with timesafari:// scheme
- Set up build options for macOS, Windows, and Linux
- Configure output directory and file inclusion
- Add platform-specific build targets (DMG, NSIS, AppImage)
- Support both x64 and arm64 architectures for macOS
- Set appropriate app categories for each platform

This enables building TimeSafari as a native desktop application
using Capacitor's Electron platform while maintaining existing
mobile and web functionality.

src/registerServiceWorker.ts

@@ -2,18 +2,10 @@
 
 import { register } from "register-service-worker";
 
-// Check if we're in an Electron environment
-const isElectron =
-  process.env.VITE_PLATFORM === "electron" ||
-  process.env.VITE_DISABLE_PWA === "true" ||
-  window.navigator.userAgent.toLowerCase().includes("electron");
-
 // Only register service worker if:
-// 1. Not in Electron
-// 2. PWA is explicitly enabled
-// 3. In production mode
+// 1. PWA is explicitly enabled
+// 2. In production mode
 if (
-  !isElectron &&
   process.env.VITE_PWA_ENABLED === "true" &&
   process.env.NODE_ENV === "production"
 ) {
@@ -45,11 +37,9 @@ if (
 } else {
   console.log(
     `Service worker registration skipped - ${
-      isElectron
-        ? "running in Electron"
-        : process.env.VITE_PWA_ENABLED !== "true"
-          ? "PWA not enabled"
-          : "not in production mode"
+      process.env.VITE_PWA_ENABLED !== "true"
+        ? "PWA not enabled"
+        : "not in production mode"
     }`,
   );
 }