Rebuild AgentCompany Electron app

AgentCompany-New/src/main/app/window-security.ts

@@ -0,0 +1,10 @@
+import type { BrowserWindow } from "electron";
+
+export function attachMainWindowSecurity(win: BrowserWindow, devServerOrigin: string | null): void {
+  win.webContents.setWindowOpenHandler(() => ({ action: "deny" }));
+  win.webContents.on("will-navigate", (event, url) => {
+    if (devServerOrigin && url.startsWith(devServerOrigin)) return;
+    if (url.startsWith("file://")) return;
+    event.preventDefault();
+  });
+}