Feature Request: Pull Request Support

Based on https://x.com/steipete/status/2022054971165090069

Description

Add support for Pull Requests to help with issue management chaos.

Context

The bot currently handles issue intelligence (semantic duplicate detection, cross-repo search, intelligent issue routing). Adding Pull Request support would extend these capabilities to PR workflows.

Expected Benefits

• Better chaos management in repository workflows
• Enhanced PR duplicate detection
• Cross-repo PR search capabilities
• Intelligent PR routing

References

• Tweet: https://x.com/steipete/status/2022054971165090069