Constant EMBEDDED_PUBLIC_KEY_HEX 

const EMBEDDED_PUBLIC_KEY_HEX: &str = "2ee366ddb411a7181b40c57b2469902be5f36984817adadf56aa0c4fd2dc0589";

Embedded public key (hex) used to verify manual licences in production builds. Replace this with the public half of the keypair you generate via cargo run --bin issue-license -- generate; keep the private half out of the repo.

The all-zero placeholder is rejected by embedded_verifying_key() so dev builds fail closed rather than accepting forgeries.