feat(smartacme): Integrate @push.rocks/taskbuffer TaskManager to coordinate ACME certificate issuance with per-domain mutex, global concurrency cap, and account-level rate limiting; refactor issuance flow into a single reusable cert-issuance task, expose issuance events, and update lifecycle to start/stop the TaskManager. Add configuration for concurrent issuances and sliding-window order limits, export taskbuffer types/plugins, and update tests and docs accordingly.

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartacme',
-  version: '9.0.1',
+  version: '9.1.0',
   description: 'A TypeScript-based ACME client for LetsEncrypt certificate management with a focus on simplicity and power.'
 }