Add built-in proxy settings for Electron and Gateway (#239)

Co-authored-by: zuolingxuan <zuolingxuan@bytedance.com>

electron/utils/openclaw-proxy.ts

@@ -0,0 +1,43 @@
+import { readOpenClawConfig, writeOpenClawConfig } from './channel-config';
+import { resolveProxySettings, type ProxySettings } from './proxy';
+import { logger } from './logger';
+
+/**
+ * Sync ClawX global proxy settings into OpenClaw channel config where the
+ * upstream runtime expects an explicit per-channel proxy knob.
+ */
+export async function syncProxyConfigToOpenClaw(settings: ProxySettings): Promise<void> {
+  const config = await readOpenClawConfig();
+  const telegramConfig = config.channels?.telegram;
+
+  if (!telegramConfig) {
+    return;
+  }
+
+  const resolved = resolveProxySettings(settings);
+  const nextProxy = settings.proxyEnabled
+    ? (resolved.allProxy || resolved.httpsProxy || resolved.httpProxy)
+    : '';
+  const currentProxy = typeof telegramConfig.proxy === 'string' ? telegramConfig.proxy : '';
+
+  if (!nextProxy && !currentProxy) {
+    return;
+  }
+
+  if (!config.channels) {
+    config.channels = {};
+  }
+
+  config.channels.telegram = {
+    ...telegramConfig,
+  };
+
+  if (nextProxy) {
+    config.channels.telegram.proxy = nextProxy;
+  } else {
+    delete config.channels.telegram.proxy;
+  }
+
+  await writeOpenClawConfig(config);
+  logger.info(`Synced Telegram proxy to OpenClaw config (${nextProxy || 'disabled'})`);
+}