Implement Slack Notifications

[mijinummi]

🧠 Concept

Deliver alerts through Slack.

⚠️ Problem

Many organizations use Slack as their primary communication tool.

📁 Implementation Scope

• src/modules/notifications/slack/

✅ Requirements

• Slack webhook integration
• Alert formatting
• Retry support

🎯 Acceptance Criteria

• Slack integration complete
• Alerts delivered
• Failures retried

[iyanumajekodunmi756]

Hi maintainer, I would love to work on this issue. I have studied the details of the issue description and I understood the requirements. I shall deliver with qualitative feedback and promptly.

[grantfox-oss]

🦊 GrantFox — @iyanumajekodunmi756 has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #131)
2. Your PR will be reviewed by the MD-Creative-Production maintainers

Good luck! Track your progress on GrantFox.