feat/app urls

[motatoes]

• use correct url in notifications
• fix urls

[bismuthdev]

Bismuth encountered an error

[greptile-apps]

Greptile Summary

This PR modifies how application URLs are handled in Slack notifications within the drift notification system. The key changes:

1. Replaces hardcoded base URL 'driftapp.digger.dev' with an environment variable DIGGER_APP_URL
2. Updates URL path pattern from '/project/{id}' to '/dashboard/projects/{id}'
3. Implements these changes consistently across both test and production notification code paths

This change improves the system's flexibility by allowing different URLs for different environments (dev, staging, prod) through environment variable configuration rather than hardcoding.

Confidence score: 4/5

1. This PR is safe to merge with proper environment variable configuration
2. The changes are straightforward URL updates with a clear pattern and purpose
3. Files needing attention:
   • ee/drift/controllers/notifications.go - Ensure DIGGER_APP_URL is properly set in all environments

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[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to 48aa9b0.

Security Overview

• 🔎 Scanned files: 1 changed file(s)

Detected Code Changes

Change Type	Relevant files
Other	► Unknown files     Fix URLs

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