Anand Krishnamoorthi be3fde7706 fix(copilot): robust diff computation for cloud agent environments (#709) ...

The cloud agent checks out a branch like copilot/review-pr-NNN which
may not have upstream/main or origin/main refs available for merge-base.

Changes:
- Use gh pr diff as primary method (always works in PR context)
- Fall back to git merge-base for local non-PR usage
- Remove path filters (*.rs *.toml examples/) — review full diff
- Remove head -2000 truncation — let agents see everything
- Explicitly fetch origin/main in copilot-setup-steps.yml as backup

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

2026-05-18 15:12:29 -05:00

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