fix(setup): default org name is Theta Directory; bump theta-agent to the fresh-install fix

- CFG_ORG default was 'SSO Manager', which became the browser tab title / app
  name on fresh installs. Default is now 'Theta Directory' (existing deployments
  keep their operator-owned ./config/sso-secrets.js name).
- Records theta-agent d937f8d (silent-install server_url + tray autostart +
  self-update 404 fixes).

setup.sh

@@ -543,7 +543,7 @@ BAOEOF
 	CFG_SSO_HOST="${CFG_SSO_HOST:-sso.$CFG_DOMAIN}"
 	CFG_PROXY_HOST="${CFG_PROXY_HOST:-proxy.$CFG_DOMAIN}"
 	CFG_SITE_NAME="${CFG_SITE_NAME:-local}"
-	CFG_ORG="${CFG_ORG:-SSO Manager}"
+	CFG_ORG="${CFG_ORG:-Theta Directory}"
 	CFG_ADMIN_UID="${CFG_ADMIN_UID:-admin}"
 	CFG_ADMIN_EMAIL="${CFG_ADMIN_EMAIL:-admin@$CFG_PROXY_HOST}"
 	CFG_LDAP_CERT_CN="${CFG_LDAP_CERT_CN:-}"