feat: develop Electron wrapper, safe IPC bridge, and subprocess spawn pipelines

preload.js

@@ -0,0 +1,32 @@
+const { contextBridge, ipcRenderer } = require('electron');
+
+contextBridge.exposeInMainWorld('api', {
+  // Python setup APIs
+  checkPythonSetup: () => ipcRenderer.invoke('check-python-setup'),
+  runPythonSetup: () => ipcRenderer.invoke('run-python-setup'),
+  onSetupProgress: (callback) => {
+    // Clear previous listener to prevent leaks
+    ipcRenderer.removeAllListeners('setup-progress');
+    ipcRenderer.on('setup-progress', (event, data) => callback(data));
+  },
+
+  // Processing APIs
+  removeBackground: (inputPath, outputPath) => 
+    ipcRenderer.invoke('remove-background', { inputPath, outputPath }),
+  onProcessProgress: (callback) => {
+    ipcRenderer.removeAllListeners('process-progress');
+    ipcRenderer.on('process-progress', (event, data) => callback(data));
+  },
+
+  // File Operations
+  selectImage: () => ipcRenderer.invoke('select-image'),
+  getTempPath: (fileName) => ipcRenderer.invoke('get-temp-path', fileName),
+  exportImage: (base64Data, defaultName) => 
+    ipcRenderer.invoke('export-image', { base64Data, defaultName }),
+  showInExplorer: (filePath) => ipcRenderer.invoke('show-in-explorer', filePath),
+
+  // Window Controls
+  minimizeWindow: () => ipcRenderer.send('window-minimize'),
+  maximizeWindow: () => ipcRenderer.send('window-maximize'),
+  closeWindow: () => ipcRenderer.send('window-close')
+});