Install new SSL cert (run #29256570446)

[github-actions]

New SSL certificate ready to install

Workflow run: https://github.com/sdtsweb/SDTS/actions/runs/29256570446

Download the artifact named ssl-cert-13 from that run page.

It contains four files: privkey.pem, cert.pem, chain.pem, fullchain.pem.

Install in Plesk

Do this once for sdts.org and once for bts.sdts.org — the same cert covers both.

1. Plesk → Websites & Domains → click the domain → SSL/TLS Certificates
2. Click Add SSL/TLS Certificate
3. Name it letsencrypt_<today's date>
4. Paste privkey.pem into Private key
5. Paste cert.pem into Certificate
6. Paste chain.pem into CA certificate
7. Click Upload Certificate
8. Then in Hosting Settings → SSL/TLS Support → select the new cert → save

Verify:

• https://sdts.org
• https://www.sdts.org
• https://bts.sdts.org
• https://www.bts.sdts.org

Close this issue once installation is verified.

Full runbook: docs/SSL_RENEWAL.md