Create New Security Dashboard (Behind Feature Flag)

Summary

Set up the dashboard component and add a feature flag. Integrate it to the existing security dashboard (group-level), so it renders when the flag is enabled.

Also add a placeholder panel for the "Open Vulnerabilities Over Time" chart, so it can easily be added to the dashboard when it is ready.

Implementation Details

• Create new Vue component following the guidelines from groupplatform insights
• Import component from group-level security dashboard
• Add feature flag (group context)
• Display new dashboard when feature flag is enabled