Rule Insights Dashboard for organizations [Public Preview]

### Value Prop
The Rule Insights Dashboard now gives enterprise teams an organization-wide view of how repository rules are evaluated and followed across every repo in one place. With custom property filtering, aggregated metrics, CSV export, and REST API access, governance and compliance teams can generate org-wide reports without manually stitching together data from individual repositories. This makes it faster and easier to demonstrate compliance and maintain consistent governance across large codebases.

### Expected Outcome
Enterprise teams responsible for governance and compliance gain reliable, aggregated visibility into rule adherence at the organization level — not just per repository. By centralizing this data with flexible filtering and export options, teams can spend less time on manual reporting and more time acting on insights. The goal is to make org-wide governance practical and scalable, even for organizations managing hundreds or thousands of repositories.

No repository files, tests, or entry points are named. Start by reviewing the organization-wide Rule Insights Dashboard scope, including custom property filtering, aggregated metrics, CSV export, and REST API access; done means these capabilities provide reliable organization-level rule adherence reporting.

Written by the indexing model from the issue text.