restricted networking for all sandboxing methods, new seatbelt profiles, updated docs, fixes to sandbox build, debugging through sandbox (#891)

packages/core/src/core/client.ts

@@ -38,6 +38,18 @@ import {
   createContentGenerator,
 } from './contentGenerator.js';
 
+import { ProxyAgent, setGlobalDispatcher } from 'undici';
+
+const proxy =
+  process.env.HTTPS_PROXY ||
+  process.env.https_proxy ||
+  process.env.HTTP_PROXY ||
+  process.env.http_proxy;
+
+if (proxy) {
+  setGlobalDispatcher(new ProxyAgent(proxy));
+}
+
 export class GeminiClient {
   private chat: Promise<GeminiChat>;
   private contentGenerator: ContentGenerator;