Method displayOldCoreCustomProfileNote

src/core/update.ts:379–395

* Suggest opting back into core when a custom profile still matches the old * pre-sync core set. Keep custom profiles user-owned; do not mutate them.

(profile: Profile, workflows?: readonly string[])

   * pre-sync core set. Keep custom profiles user-owned; do not mutate them.
   */
  private displayOldCoreCustomProfileNote(profile: Profile, workflows?: readonly string[]): void {
    if (profile !== 'custom' || !workflows) {
      return;
    }

    const workflowSet = new Set(workflows);
    const matchesOldCore =
      workflowSet.size === OLD_CORE_WORKFLOWS.length &&
      OLD_CORE_WORKFLOWS.every((workflow) => workflowSet.has(workflow));

    if (!matchesOldCore) {
      return;
    }

    console.log(chalk.dim('Note: The core profile now includes sync. Your custom profile is preserving the old core workflow set.'));
    console.log(chalk.dim('Run `openspec config profile core` and then `openspec update` to add sync.'));
  }

  /**
   * Removes skill directories for workflows when delivery changed to commands-only.