Function sendModeChangeToTeammate

src/components/teams/TeamsDialog.tsx:645–660

* Send a mode change message to a single teammate * Also updates config.json directly so the UI reflects the change immediately

(teammateName: string, teamName: string, targetMode: PermissionMode)

 * Also updates config.json directly so the UI reflects the change immediately
 */
function sendModeChangeToTeammate(teammateName: string, teamName: string, targetMode: PermissionMode): void {
  // Update config.json directly so UI shows the change immediately
  setMemberMode(teamName, teammateName, targetMode);

  // Also send message so teammate updates their local permission context
  const message = createModeSetRequestMessage({
    mode: targetMode,
    from: 'team-lead'
  });
  void writeToMailbox(teammateName, {
    from: 'team-lead',
    text: jsonStringify(message),
    timestamp: new Date().toISOString()
  }, teamName);
  logForDebugging(`[TeamsDialog] Sent mode change to ${teammateName}: ${targetMode}`);
}

/**
 * Cycle a single teammate's mode