feat: Implement Phase 2 cross-cutting services with email and notification enhancements

- Refactor email verification and password reset utilities to use new email service.
- Introduce email delivery queue and notification delivery model for better tracking.
- Enhance file validation and storage services for improved security and ownership management.
- Add cron job for cleaning inactive notifications with retention policy.
- Update document worker to handle document generation and storage more efficiently.
- Implement logging improvements in activity and log workers.
- Create comprehensive documentation for new API endpoints and services.
- Add unit tests for file validation and notification policies to ensure robustness.

app/workers/index.js

@@ -22,7 +22,8 @@ const startWorkers = async () => {
   const createActivityWorker = require("./activity.worker");
   const createLogWorker = require("./log.worker");
   const createDocumentWorker = require("./document.worker");
-  const workers = [createActivityWorker(), createLogWorker(), await createDocumentWorker()];
+  const createEmailWorker = require("./email.worker");
+  const workers = [createActivityWorker(), createLogWorker(), await createDocumentWorker(), createEmailWorker()];
   console.log("All workers started.");
 
   let shuttingDown = false;