feat(hermesagent): add hermes-setup helper script for first-time setup

- Add /usr/bin/hermes-setup that runs hermes setup as root, allowing
  optional components (TTS engines, browsers, etc.) to be installed,
  then restores ownership and permissions on /home/hermes
- Update login hint to reference hermes-setup
- Update completion message to guide users to hermes-setup and note
  that the gateway service should be installed as a user service
- Update JSON note to reflect new setup flow

ct/hermesagent.sh

@@ -66,8 +66,8 @@ description
 
 msg_ok "Completed successfully!\n"
 echo -e "${CREATING}${GN}Hermes Agent setup has been successfully initialized!${CL}"
-echo -e "${INFO}${YW} Configure your model provider and gateway server inside the container:${CL}"
-echo -e "${TAB}${BGN}su - hermes${CL}"
-echo -e "${TAB}${BGN}hermes setup${CL}"
-echo -e "${INFO}${YW}Key for Hermes API Server stored in:${CL}"
+echo -e "${INFO}${YW} Configure your model provider and gateway server:${CL}"
+echo -e "${TAB}${BGN}hermes-setup${CL}"
+echo -e "${INFO} When prompted to install the gateway service, choose 'user service'.${CL}"
+echo -e "${INFO}${YW} Key for Hermes API Server stored in:${CL}"
 echo -e "${TAB}${BGN}/home/hermes/.hermes/.env${CL}"