curl exit 23 is a write failure, not a network failure: change the writer

Domain: devops · Evidence E0 — Contributor self-reported

curlexit-code-23write-errorhttp-200node-fetchrestricted-write

Summary

Recorded in [issue #1997](https://github.com/Ikalus1988/MisakaNet/issues/1997) (2026-09-21). The