Simplify job system architecture

- Replace createMailingJobs() function with static mailingJobs array
- Remove complex initialization dependencies and function wrappers
- Jobs now get MailingService from payload context instead of factory injection
- Fix PayloadCMS task handler return types to use proper {output: {}} format
- Eliminate potential initialization race conditions
- Cleaner, more straightforward job registration process

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/jobs/index.ts

@@ -2,21 +2,34 @@ import { processEmailsJob, ProcessEmailsJobData } from './processEmailsJob.js'
 import { sendEmailJob } from './sendEmailTask.js'
 import { MailingService } from '../services/MailingService.js'
 
-export const createMailingJobs = (mailingService: MailingService): any[] => {
-  return [
-    {
-      slug: 'processEmails',
-      handler: async ({ job, req }: { job: any; req: any }) => {
-        return processEmailsJob(
-          job as { data: ProcessEmailsJobData },
-          { req, mailingService }
-        )
-      },
-      interfaceName: 'ProcessEmailsJob',
+export const mailingJobs = [
+  {
+    slug: 'processEmails',
+    handler: async ({ job, req }: { job: any; req: any }) => {
+      // Get mailing context from payload
+      const payload = (req as any).payload
+      const mailingContext = payload.mailing
+      if (!mailingContext) {
+        throw new Error('Mailing plugin not properly initialized')
+      }
+
+      // Use the existing mailing service from context
+      await processEmailsJob(
+        job as { data: ProcessEmailsJobData },
+        { req, mailingService: mailingContext.service }
+      )
+
+      return {
+        output: {
+          success: true,
+          message: 'Email queue processing completed successfully'
+        }
+      }
     },
-    sendEmailJob,
-  ]
-}
+    interfaceName: 'ProcessEmailsJob',
+  },
+  sendEmailJob,
+]
 
 export * from './processEmailsJob.js'
 export * from './sendEmailTask.js'