feat(docker): add dev.sh with auto-funding and ATM app setup

- Add dev.sh script for managing regtest development environment
- Implement cmd_fund to fund ATM app owner via Lightning.Pub API
- Add --fund flag to cmd_up for automatic funding on startup
- Update setup_atm_app to write VITE_APP_ID to machine .env
- Fix Electron IPC to pass appId and extensionApiUrl to renderer
- Restructure repo from nested lamassu-next/ to root

The dev.sh script now supports:
- ./dev.sh up --fund  # Start regtest and auto-fund ATM
- ./dev.sh fund       # Fund existing ATM app
- ./dev.sh status     # Show environment status
- ./dev.sh reset      # Clean restart

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/machine/vite.config.ts

@@ -0,0 +1,33 @@
+import path from 'node:path'
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import tailwindcss from '@tailwindcss/vite'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [vue(), tailwindcss()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+  // Dev server configuration
+  server: {
+    port: 1420,
+    strictPort: true,
+  },
+  // Build configuration for Electron renderer
+  build: {
+    // Target modern Chrome (Electron uses Chromium)
+    target: 'chrome120',
+    // Sourcemaps for debugging
+    sourcemap: process.env.NODE_ENV === 'development',
+    rollupOptions: {
+      // @lamassu/hal uses Node.js APIs (serialport, node:events) and will only
+      // run in Electron's main process. Exclude from renderer bundle.
+      external: ['@lamassu/hal'],
+    },
+  },
+  // Prevent Vite from clearing the screen (useful when running with Electron)
+  clearScreen: false,
+})