CA + Client Cert Generator

Generates a RSA 2048 CA cert and a RSA 2048 client cert signed by it, then returns a ZIP.

Warning: This generates and returns private keys. Protect this endpoint (Basic Auth, IP allowlist, token).
Example: Owen Rocks Root CA
Example: pptmstr or laptop-r2fu
ZIP will include client.p12 and client.pfx (same content, different extension).
Password will be included in README.txt.
Outputs: ca.crt, ca.pem, client.crt, client.key, client.p12, client.pfx, README.txt