Convert Windows app to Electron and add Android Capacitor app with CI builds

windows-app/electron-preload.js

@@ -0,0 +1,10 @@
+const { contextBridge, ipcRenderer } = require('electron');
+
+contextBridge.exposeInMainWorld('windowsAppBridge', {
+  saveApiKey: (token) => ipcRenderer.invoke('save-api-key', token),
+  persistApp: (app) => ipcRenderer.invoke('persist-app', app),
+  listApps: () => ipcRenderer.invoke('list-apps'),
+  syncApp: (appId) => ipcRenderer.invoke('sync-app', appId),
+  runOpencodeTask: (appId, taskName, args) => 
+    ipcRenderer.invoke('run-opencode-task', appId, taskName, args || []),
+});