Triage bot does not handle cross-repository issue references

[jpenilla]

TESTING ISSUE DISREGARD

Describe the problem

When a user references another repo's issue in their report (e.g. "This is similar to #12"), the triage bot does not follow the reference or consider it during duplicate detection.

Steps to reproduce

1. Create an issue containing text like: "See also OtherRepo/Thing#42"
2. Run triage
3. The duplicate search only considers the current repo

Expected behavior

The agent should ideally be able to detect cross-repo references and optionally check those repos for duplicates (or at least note them in the analysis).

Environment

• KennyBot version: latest (a679d3b)
• CI: N/A (observed in local testing)

[jpenilla]

Closing per request — thanks for helping test the triage bot!