Rebrand the CLI to GuardeX with gx-first command UX#23

NagyVikt merged 1 commit intomainrecodeee/gitguardex:mainfrom

agent/codex/20260411-181341-zeus-edixai-com-guardex-branding-gxrecodeee/gitguardex:agent/codex/20260411-181341-zeus-edixai-com-guardex-branding-gxCopy head branch name to clipboard