✨feature: Initial functional build

src/preload.js

@@ -0,0 +1,10 @@
+const { contextBridge, ipcRenderer } = require('electron');
+
+contextBridge.exposeInMainWorld('oddl', {
+  getCapabilities: () => ipcRenderer.invoke('get-capabilities'),
+  selectLocalDir: () => ipcRenderer.invoke('select-local-dir'),
+  listLocalDir: (dirPath) => ipcRenderer.invoke('list-local-dir', dirPath),
+  listRemoteDir: (url) => ipcRenderer.invoke('list-remote-dir', url),
+  downloadItem: (payload) => ipcRenderer.invoke('download-item', payload),
+  onLog: (callback) => ipcRenderer.on('log', (_event, message) => callback(message)),
+});