feat: Job Monitoring backend: add monitoring APIs, activity log, and latest-per-job view

[saifrazabc]

Description

This PR delivers backend support for User Story 37368 (CSA Job Monitoring): new endpoints for latest jobs, history, and activities; job lifecycle/activity logging; Triggered By mapping via jobTrigger (USER/SYSTEM/CRON); and database migration adding monitoring columns/indexes plus the job_activities table for audit-style job event tracking.

Scope covered

• Added new Job Monitoring endpoints:
  • GET /jobs/monitoring/latest:
    • returns latest monitored job runs (one latest row per monitored type)
  • GET /jobs/monitoring/history:
    • returns job history for the last month (paginated, filter/sort ready)
  • GET /jobs/monitoring/activities:
    • returns recent activities for default monitoring view
  • GET /jobs/:id/activities:
    • returns activities for a selected job run
• Added activity logging support for job execution lifecycle and CRA file events.
• Added database migration and Prisma schema updates for monitoring fields and job activities table.
• Implemented Triggered By behavior using jobTrigger only (USER, SYSTEM, CRON), per agreed approach.
• Updated existing tests and added tests for new monitoring APIs.

Dependency changes

• No new package dependencies.

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Type of change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

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How Has This Been Tested?

• Automated/Unit tests
• Manual tests (description below)
• No new tests are required

Automated tests run

npm run build
npm test -- src/jobs/jobs.service.spec.ts src/api/jobs/jobs.controllers.spec.ts
npm test -- src/jobs/job-runner.service.spec.ts src/cra/handlers/poll-cra-response.handler.spec.ts src/cra/handlers/send-cra-file.handler.spec.ts


Checklist
 I have tested my changes locally
 The code builds and tests pass (no warnings)

[mdiapenabc]

Create a new PR based on this cide without the R26.10 code for an easier review.