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/log.worker.js

@@ -25,7 +25,7 @@ const createLogWorker = () => {
     "logQueue",
 
     async (job) => {
-      const { message, timestamp } = job.data;
+      const { message, timestamp, level = "info", service = "zumri-api", requestId, metadata } = job.data;
 
       const logDate = new Date(timestamp)
         .toISOString()
@@ -36,7 +36,7 @@ const createLogWorker = () => {
         `app-${logDate}.log`
       );
 
-      const logLine = `[${timestamp}] ${message}\n`;
+      const logLine = `${JSON.stringify({ timestamp, level, service, requestId, message, metadata })}\n`;
 
       await fs.promises.appendFile(
         logFilePath,
@@ -70,4 +70,4 @@ const createLogWorker = () => {
   return worker;
 };
 
-module.exports = createLogWorker;
+module.exports = createLogWorker;