Add Slack/Discord notification integration

[GodsBoy]

Send notifications to Slack or Discord when RepoKeeper triages an issue or reviews a PR.

Scope:

• Add optional webhook URL config for Slack/Discord
• Post formatted messages on triage events
• Include issue/PR link, classification, and summary

Simple integration, great starter issue.

[GodsBoy]

Thanks for opening this issue! Notification integrations are definitely a valuable feature for RepoKeeper. Before we move forward, I'd like to gather a few more details to make sure we scope this correctly:

• Which platform(s) are you prioritizing? Slack, Discord, or both equally?
• What's your expected workflow? Should notifications be sent for all triage events, or would you want filtering/configuration options?
• Are there specific webhook formats or message templates you'd prefer, or should we design something flexible?
• Does your team have any existing notification infrastructure we should be aware of or integrate with?

A rough mockup or example of what you'd like the notification to look like would be super helpful too! This will help us design an API that works well for your use case.

[bestdev9369-oss]

Thanks for the thoughtful questions - really helpful for clarifying the direction here.

For the initial version, I’m thinking of keeping things simple and practical:

Platform support: Add webhook-based integration for both Slack and Discord via optional env config
Workflow: Trigger notifications for all triage events (issues and PR reviews) to start, and we can iterate on filtering if needed
Message format: Include the key details (title, link, classification, summary) with clean, platform-appropriate formatting
Structure: Implement this as a small notification service so it’s easy to extend later (e.g., additional providers or custom hooks)

This approach should keep the integration lightweight and aligned with the self-hosted nature of the project. Happy to adjust if you have a specific workflow or format in mind.

[bestdev9369-oss]

I’ve implemented a basic webhook notification flow and opened a PR.

It currently triggers after issue triage and duplicate detection using an optional WEBHOOK_URL config.

Happy to extend this further if needed.