fix(hub): raise Docmind OSS upload timeout past httpx 3s default

SubmitDocParserJobAdvance uploads PDFs to Aliyun OSS via tea/httpx, which
defaults readTimeout to 3000ms when RuntimeOptions is empty. Multi-MB
teacher PDFs on para silo failed with ReadTimeout(3000) before the job
could start. Set connectTimeout=15s and readTimeout=5m.

hub/scripts/smoke-docmind.ts

@@ -26,7 +26,11 @@ const client = new DocmindClient.default({
 } as never);
 
 const fileStream = createReadStream(pdfPath);
-const runtime = new RuntimeOptions({});
+const runtime = new RuntimeOptions({
+  connectTimeout: 15_000,
+  // httpx defaults to 3000ms; OSS upload of multi-MB PDFs needs far more.
+  readTimeout: 5 * 60_000,
+});
 
 console.log("Submitting job...");
 const submitResp = await client.submitDocParserJobAdvance(