Remove 'Where you can use the agent' section

[mintlify]

Removes the 'Where you can use the agent' section from the agent index page as it contains inaccurate information about agent instructions.

---

Note

Low Risk
Low risk documentation-only change that deletes a section and images/links; main risk is reduced guidance if that information was still relevant.

Overview
Removes the "Where you can use the agent" section from agent/index.mdx, including the Dashboard instructions/screenshots and the Slack/API bullets.

The page now jumps directly from the agent capability list to GitHub connection and repository-context setup.

^{Written by Cursor Bugbot for commit 31d8b90. This will update automatically on new commits. Configure here.}