[Feature Request]: The comment posting preview links includes references to docs that aren't part of the docset

[nik9000]

Prerequisites

• I have searched existing issues to ensure this feature hasn't already been requested
• I have tested using the latest version of docs-builder

What problem are you trying to solve?

The helper posted this comment, telling me that there's a preview available for AGENTS.md and stuff. Those are excluded by the docset.

Proposed Solution

Match against the docset.yaml before commenting.

Examples and Research

No response

Alternative Solutions

No response

Additional Context

No response

How important is this feature to you?

Nice to have