Function saveAgentSetting

src/utils/sessionStorage.ts:2861–2863

(agentSetting: string)

 * Cache-only here to avoid creating metadata-only session files at startup.
 */
export function saveAgentSetting(agentSetting: string): void {
  getProject().currentSessionAgentSetting = agentSetting
}

/**
 * Cache a session title set at startup (--name). Written to disk by