Function saveConfig

packages/shared/config.ts:170–188

(partial: Partial<PlannotatorConfig>)

 * Creates ~/.plannotator/ directory if needed.
 */
export function saveConfig(partial: Partial<PlannotatorConfig>): void {
  try {
    const current = loadConfig();
    const mergedDiffOptions = (current.diffOptions || partial.diffOptions)
      ? { ...current.diffOptions, ...partial.diffOptions }
      : undefined;
    const mergedPrompts = mergePromptConfig(current.prompts, partial.prompts);
    const merged = {
      ...current,
      ...partial,
      diffOptions: mergedDiffOptions,
      prompts: mergedPrompts,
    };
    mkdirSync(CONFIG_DIR, { recursive: true });
    writeFileSync(CONFIG_PATH, JSON.stringify(merged, null, 2) + "\n", "utf-8");
  } catch (e) {
    process.stderr.write(`[plannotator] Warning: failed to write config.json: ${e}\n`);
  }
}

/**
 * Detect the git user name from `git config user.name`.