Stage 1 secure installation and licensing registration.
The installer registers this installation against licence.vividtelecom.com and requests URL locking.
Argon2id is used for password hashing. Platform/Super Admin creation will be driven by Whitelabel licence entitlements in the next stage.
Unique application encryption key generated during install. Secure server-side sessions, CSRF controls, CSP/security headers and URL-lock configuration are enabled.