Enhance: Implement dynamic launcher URL and restore package.json

- Added logic to construct launcher URL based on hydrated device context.
- Implemented dev/production host fallback for demo.localhost.
- Restored missing package.json with proper start and build scripts.
- Finalized IPC handlers for seed and device configuration.

src/main/index.ts

@@ -26,16 +26,26 @@ async function createWindow() {
     },
   });
 
-  // Prioritize demo.localhost for local development
-  const devUrl = 'http://demo.localhost:5173';
-  // Fallback URL if local is offline
-  const fallbackUrl = 'https://dev-demo.oneskyit.com/';
-
-  console.log(`Loading UI from: ${devUrl}`);
+  // Determine target URL based on hydrated config
+  let targetUrl = 'http://demo.localhost:5173'; // Default Dev Fallback
   
-  mainWindow.loadURL(devUrl).catch(() => {
-    console.warn(`Failed to load ${devUrl}. Falling back to ${fallbackUrl}`);
-    mainWindow?.loadURL(fallbackUrl);
+  if (cachedFullConfig && cachedFullConfig.native_device) {
+    const device = cachedFullConfig.native_device;
+    const eventId = device.event_id_random || device.event_id;
+    const locationId = device.event_location_id_random || device.event_location_id || '';
+    const host = device.app_base_url || 'demo.localhost:5173';
+    
+    // In development, we likely want to stick to localhost even if app_base_url is set
+    const useHost = (host.includes('localhost')) ? host : 'demo.localhost:5173';
+    
+    targetUrl = `http://${useHost}/events/${eventId}/launcher/${locationId}`;
+  }
+
+  console.log(`Launcher: Navigating to ${targetUrl}`);
+  
+  mainWindow.loadURL(targetUrl).catch(() => {
+    console.warn(`Failed to load ${targetUrl}. Falling back to dev-demo...`);
+    mainWindow?.loadURL('https://dev-demo.oneskyit.com/');
   });
 
   mainWindow.on('closed', () => {
@@ -63,12 +73,7 @@ ipcMain.handle('get-seed-config', async () => {
 });
 
 ipcMain.handle('get-device-config', async () => {
-  if (cachedFullConfig) return cachedFullConfig;
-  if (cachedSeed) {
-    cachedFullConfig = await fetchFullConfig(cachedSeed);
-    return cachedFullConfig;
-  }
-  return null;
+  return cachedFullConfig;
 });
 
 ipcMain.handle('get-jwt', async () => {