chore(desktop): add build configuration and output files

- Add electron-vite configuration for main and preload processes
- Add .gitignore to exclude node_modules
- Add compiled output files for main and preload processes
- Add TypeScript configuration for project setup
- Add package-lock.json for dependency management
- Initialize build artifacts for desktop application distribution

electron.vite.config.ts

@@ -0,0 +1,26 @@
+import { defineConfig, externalizeDepsPlugin } from 'electron-vite';
+import { resolve } from 'path';
+
+export default defineConfig({
+  main: {
+    plugins: [externalizeDepsPlugin()],
+    build: {
+      rollupOptions: {
+        input: {
+          index: resolve(__dirname, 'src/main/main.ts'),
+        },
+      },
+    },
+  },
+  preload: {
+    plugins: [externalizeDepsPlugin()],
+    build: {
+      rollupOptions: {
+        input: {
+          index: resolve(__dirname, 'src/main/preload.ts'),
+        },
+      },
+    },
+  },
+  // No renderer - desktop app loads external web frontend
+});