Build Status Change Subscription Service

[Mosas2000]

## Description

Let users subscribe to status changes for assets, bridges, and services with configurable triggers.

## Requirements and context

- Subscription CRUD

• Status trigger rules

• Delivery destinations

• Frequency controls

• Duplicate suppression

• Audit trail

  Suggested execution

  Fork the repo and create a branch

  git checkout -b feature/backend-status-subscriptions

  Implement changes

  • Create subscription service

• Connect to alerting and notification channels

• Persist subscription rules

• Document subscription behavior

  Example commit message

  feat: build status change subscription service

  Guidelines

  • Assignment required before starting
  • PR must include a closing reference to this issue
  • Include screenshots or examples where applicable
  • Timeframe: 72 hours