fix(TLS 驗證): 套用全域憑證忽略設定

app/preflight.js

@@ -1,18 +1,18 @@
 import axios from 'axios';
-import https from 'https';
 import {
   GITEA_TOKEN,
   GITEA_COMMENT_TOKEN,
   GITEA_SERVER_URL,
   GITEA_REPOSITORY,
   PR_NUMBER,
+  getInsecureHttpsAgent,
   getOpenCodeHttpsAgent,
   getLLMConfig,
 } from './config.js';
 import { verifyRemoteAccess } from './git.js';
 import { step, line, ok, error, result } from './log.js';
 
-const httpsAgent = new https.Agent({ rejectUnauthorized: false });
+const httpsAgent = getInsecureHttpsAgent();
 /**
  * 組出 Gitea REST API v1 的完整網址。
  *