Function writeConfig

packages/cli/src/telemetry/config.ts:126–134

(config: HyperframesConfig)

 * Persist config to disk. Updates the in-memory cache.
 */
export function writeConfig(config: HyperframesConfig): void {
  try {
    mkdirSync(CONFIG_DIR, { recursive: true, mode: 0o700 });
    writeFileSync(CONFIG_FILE, JSON.stringify(config, null, 2) + "\n", { mode: 0o600 });
    cachedConfig = { ...config };
  } catch {
    // Non-fatal — telemetry should never break the CLI
  }
}

/**
 * Increment the command counter and persist.