- auth_components.templ: AnimatedBackground (35 elements, /static/logo_dark.png, no light/dark pairs), GoogleButton (a/button variant, English label 'Sign in with Google'), AuthDivider ('or' divider)
- auth_layout.templ: standalone HTML shell with .login-screen, @AnimatedBackground(), .card-wrap/.card-glow/.auth-card-shell, htmx.min.js only (no sortable/sse scripts)
- No auth.User param on AuthLayout (auth pages always unauthenticated)
- just generate exits 0, all Go tests pass
