init code for the trainer app

electron/preload.cjs

@@ -0,0 +1,27 @@
+const { contextBridge, ipcRenderer } = require('electron');
+
+contextBridge.exposeInMainWorld('electronAPI', {
+  getVersion: () => ipcRenderer.invoke('get-version'),
+  getPlatform: () => ipcRenderer.invoke('get-platform'),
+
+  onDeepLink: (callback) => {
+    ipcRenderer.on('deep-link', (event, data) => callback(data));
+  },
+
+  minimizeWindow: () => ipcRenderer.invoke('minimize-window'),
+  maximizeWindow: () => ipcRenderer.invoke('maximize-window'),
+  closeWindow: () => ipcRenderer.invoke('close-window'),
+
+  bluetooth: {
+    checkAvailability: () => ipcRenderer.invoke('bluetooth:check-availability'),
+    checkSystem: () => ipcRenderer.invoke('bluetooth:check-system'),
+    onDevicesUpdated: (callback) => {
+      ipcRenderer.on('bluetooth:devices-updated', (event, devices) => callback(devices));
+    },
+    selectDevice: (deviceId) => ipcRenderer.send('bluetooth:select-device', deviceId),
+    cancelSelection: () => ipcRenderer.send('bluetooth:cancel-selection'),
+    clearDevices: () => ipcRenderer.send('bluetooth:clear-devices'),
+  },
+
+  isElectron: true,
+});