## Plan: Integrate @push.rocks/smartacme into Port80Handler

- [x] read the complete README of @push.rocks/smartacme and understand the API.
- [x] Add imports to ts/plugins.ts:
    - import * as smartacme from '@push.rocks/smartacme';
    - export { smartacme };
- [x] In Port80Handler.start():
    - Instantiate SmartAcme and use the in memory certmanager.
    - use the DisklessHttp01Handler implemented in classes.port80handler.ts
    - Call `await smartAcme.start()` before binding HTTP server.
- [x] Replace old ACME flow in `obtainCertificate()` to use `await smartAcme.getCertificateForDomain(domain)` and process returned cert object. Remove old code.
- [x] Update `handleRequest()` to let DisklessHttp01Handler serve challenges.
- [x] Remove legacy methods: `getAcmeClient()`, `handleAcmeChallenge()`, `processAuthorizations()`, and related token bookkeeping in domainInfo.
  
## Plan: Certificate Provider Hook & Observable Emission

- [x] Extend IPortProxySettings (ts/smartproxy/classes.pp.interfaces.ts):
    - Define type ISmartProxyCertProvisionObject = tsclass.network.ICert | 'http01'`.
    - Add optional `certProvider?: (domain: string) => Promise<ISmartProxyCertProvisionObject>`.
- [x] Enhance SmartProxy (ts/smartproxy/classes.smartproxy.ts):
    - Import `EventEmitter` and change class signature to `export class SmartProxy extends EventEmitter`.
    - Call `super()` in constructor.
    - In `initializePort80Handler` and `updateDomainConfigs`, for each non-wildcard domain:
        - Invoke `certProvider(domain)` if provided, defaulting to `'http01'`.
        - If result is `'http01'`, register domain with `Port80Handler` for ACME challenges.
        - If static cert returned, bypass `Port80Handler`, apply via `NetworkProxyBridge`
    - Subscribe to `Port80HandlerEvents.CERTIFICATE_ISSUED` and `CERTIFICATE_RENEWED` and re-emit on `SmartProxy` as `'certificate'` events (include `domain`, `publicKey`, `privateKey`, `expiryDate`, `source: 'http01'`, `isRenewal` flag).
- [x] Extend NetworkProxyBridge (ts/smartproxy/classes.pp.networkproxybridge.ts):
    - Add public method `applyExternalCertificate(data: ICertificateData): void` to forward static certs into `NetworkProxy`.
- [ ] Define `SmartProxy` `'certificate'` event interface in TypeScript and update documentation.
- [ ] Update README with usage examples showing `certProvider` callback and listening for `'certificate'` events.