Add Copilot instructions for PR labeling

[andyleejordan]

Similar to PowerShell/PowerShellEditorServices#2310 we need Copilot PRs to be labeled correctly for this repo.

[github-actions]

Triage summary: Add PR labeling guidance to .github/copilot-instructions.md so Copilot agents (and contributors) know to apply Issue-Bug / Issue-Enhancement labels, which drive changelog categorization in .github/release.yml.

For maintainers

Reproducibility: Not a bug — this is a missing-guidance enhancement. The need is unambiguous: .github/copilot-instructions.md exists and covers build/architecture but has no mention of PR labeling. .github/release.yml already categorizes merged PRs by Issue-Enhancement and Issue-Bug labels. Without instructions, Copilot agents open unlabeled PRs that land in "Other Changes 🙏" regardless of their nature. Confidence in scope: high.

Copilot-fix suitability: Yes. This is an ideal candidate:

• Single-file change (append a short section to .github/copilot-instructions.md)
• Clear expected behavior: PRs opened by Copilot agents should carry the correct Issue-* label
• Reference implementation available: PowerShellEditorServices#2310
• No design decisions or protocol work needed
• Already assigned to the Copilot coding agent

Likely area: .github/copilot-instructions.md — add a "PR labeling" section explaining that every PR must carry exactly one Issue-Enhancement or Issue-Bug label (matching .github/release.yml) so automated release notes categorize it correctly.

Suggested section content (adapt from PSES PR):

## Pull Request Labels

Every pull request **must** carry exactly one `Issue-*` label. GitHub's automated
release notes (`.github/release.yml`) use these labels to categorize merged PRs:

| Label               | Changelog section              |
|---------------------|-------------------------------|
| `Issue-Enhancement` | Enhancements & Features ✨    |
| `Issue-Bug`         | Squashed Bugs 🐛              |
| *(anything else)*   | Other Changes 🙏              |

Apply the label that best describes the change before requesting review.

Generated by Agentic Issue Triage for issue #5531 · 74.6 AIC · ⌖ 12.5 AIC · ⊞ 23.4K · ◷

Add this agentic workflows to your repo

To install this agentic workflow, run

gh aw add githubnext/agentics/workflows/issue-triage.md@2f03fdaafb8c1ae62dfde7e0be762a822a201aeb