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/services/PlatformServiceFactory.ts

@@ -1,7 +1,6 @@
 import { PlatformService } from "./PlatformService";
 import { WebPlatformService } from "./platforms/WebPlatformService";
 import { CapacitorPlatformService } from "./platforms/CapacitorPlatformService";
-import { ElectronPlatformService } from "./platforms/ElectronPlatformService";
 
 /**
  * Factory class for creating platform-specific service implementations.
@@ -10,7 +9,6 @@ import { ElectronPlatformService } from "./platforms/ElectronPlatformService";
  * The factory determines which platform implementation to use based on the VITE_PLATFORM
  * environment variable. Supported platforms are:
  * - capacitor: Mobile platform using Capacitor
- * - electron: Desktop platform using Electron
  * - web: Default web platform (fallback)
  *
  * @example
@@ -39,9 +37,6 @@ export class PlatformServiceFactory {
       case "capacitor":
         PlatformServiceFactory.instance = new CapacitorPlatformService();
         break;
-      case "electron":
-        PlatformServiceFactory.instance = new ElectronPlatformService();
-        break;
       case "web":
       default:
         PlatformServiceFactory.instance = new WebPlatformService();