add feature to connect claude via proxy

.env.example

@@ -1 +1,3 @@
-ANTHROPIC_API_KEY=
+ANTHROPIC_API_KEY=
+#PROXY_HOST_NAME=127.0.0.1
+#PROXY_PORT=12111

src/main/store/anthropic.ts

@@ -1,9 +1,40 @@
 import Anthropic from '@anthropic-ai/sdk';
 import dotenv from 'dotenv';
+import { SocksProxyAgent } from 'socks-proxy-agent';
 
 dotenv.config();
 
-export const anthropic = new Anthropic({
-  apiKey: process.env.ANTHROPIC_API_KEY,
+// Initialize Anthropic client with or without proxy based on configuration
+const anthropicConfig: {
+  apiKey: string;
+  baseURL: string;
+  httpAgent?: SocksProxyAgent;
+  timeout: number;
+} = {
+  apiKey: process.env.ANTHROPIC_API_KEY!,
   baseURL: process.env.ANTHROPIC_BASE_URL || 'https://api.anthropic.com',
-});
+  timeout: 60000,
+};
+
+// Configure SOCKS5 proxy if proxy settings are provided in environment variables
+if (process.env.PROXY_HOST_NAME && process.env.PROXY_PORT) {
+  // Create proxy configuration
+  const proxyOptions = {
+    hostname: process.env.PROXY_HOST_NAME,
+    port: parseInt(process.env.PROXY_PORT, 10),
+    // Optional: Add authentication if required
+    // username: process.env.PROXY_USERNAME,
+    // password: process.env.PROXY_PASSWORD,
+  };
+
+  // Initialize SOCKS5 proxy agent
+  const socksAgent = new SocksProxyAgent(
+    `socks5://${proxyOptions.hostname}:${proxyOptions.port}`,
+  );
+
+  // Add proxy agent to Anthropic configuration
+  anthropicConfig.httpAgent = socksAgent;
+}
+
+// Create and export Anthropic client instance
+export const anthropic = new Anthropic(anthropicConfig);