Build 2602261605: invite trace and cross-system user lifecycle

frontend/app/login/page.tsx

@@ -52,7 +52,7 @@ export default function LoginPage() {
     <main className="card auth-card">
       <BrandingLogo className="brand-logo brand-logo--login" />
       <h1>Sign in</h1>
-      <p className="lede">Use your Jellyfin account, or sign in with Magent instead.</p>
+      <p className="lede">Use your Jellyfin account, or sign in with a local Magent admin account.</p>
       <form onSubmit={(event) => submit(event, 'jellyfin')} className="auth-form">
         <label>
           Username
@@ -86,7 +86,7 @@ export default function LoginPage() {
           Sign in with Magent account
         </button>
         <a className="ghost-button" href="/signup">
-          Have an invite? Create a Magent account
+          Have an invite? Create your account (Jellyfin + Magent)
         </a>
       </form>
     </main>