Errno::ECONNRESET: Connection reset by peer (Errno::ECONNRESET)

## Error

```
Connection reset by peer (Errno::ECONNRESET)
```

## Stack trace

```
openssl/buffering.rb:217 in sysread_nonblock
openssl/buffering.rb:217 in read_nonblock
net/protocol.rb:218 in rbuf_fill
net/protocol.rb:199 in readuntil
net/protocol.rb:209 in readline
net/http/response.rb:158 in Net::HTTPResponse.read_status_line
net/http/response.rb:147 in Net::HTTPResponse.read_new
net/http.rb:2414 in block in Net::HTTP#transport_request
net/http.rb:2405 in catch
net/http.rb:2405 in transport_request
```

## Tracking Details
- **Project**: exercism-rails
- **Sentry**: [Errno::ECONNRESET: Connection reset by peer (Errno::ECONNRESET)](https://thalamus-ai.sentry.io/issues/144832196/)
- **Culprit**: MandateJob
- **First seen:** Sep 4, 2026

Start with MandateJob and the linked Sentry event, then trace the reported calls through openssl/buffering.rb, net/protocol.rb, and net/http/response.rb. The issue does not identify a requested change or a success condition, so confirm the failure's cause and expected handling before defining what done means.

Written by the indexing model from the issue text.