feat: initialize project scaffold with Electron structure, transcription engine, and dark-themed UI components

src/preload/index.js

@@ -0,0 +1,22 @@
+import { contextBridge, ipcRenderer } from 'electron'
+import { exposeElectronAPI } from '@electron-toolkit/preload'
+
+const api = {
+  windowControls: (action) => ipcRenderer.send('window-controls', action),
+  startTranscription: (filePath, options) => ipcRenderer.invoke('start-transcription', { filePath, options }),
+  onTranscriptionProgress: (callback) => ipcRenderer.on('transcription-progress', (_, progress) => callback(progress)),
+  onTranscriptionData: (callback) => ipcRenderer.on('transcription-data', (_, data) => callback(data)),
+  detectHardware: () => ipcRenderer.invoke('detect-hardware')
+}
+
+if (process.contextIsolated) {
+  try {
+    exposeElectronAPI()
+    contextBridge.exposeInMainWorld('api', api)
+  } catch (error) {
+    console.error(error)
+  }
+} else {
+  window.electron = exposeElectronAPI()
+  window.api = api
+}