Add GitHub App authentication support for Copilot, Claude, and Codex engines#12272

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Copilot wants to merge 12 commits intomainfrom

copilot/add-app-support-engine-field

Commits on Jan 28, 2026

Initial plan
Copilot
committed
feat: Add engine.app support for Copilot authentication

Copilot
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pelikhan
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feat: Add test workflow for Copilot app authentication

Copilot
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pelikhan
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chore: Clean up and finalize engine.app implementation

Copilot
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pelikhan
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fix: Wrap copilot-app.md body content in XML comment

Copilot
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pelikhan
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feat: Update smoke-copilot to use shared copilot-app workflow

Copilot
and
pelikhan
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Add changeset [skip-ci]
github-actions[bot]
committed
[WIP] Move app validation script to shell file in actions/setup/sh (#12298)
Copilot
authored
Add changeset [skip-ci]
github-actions[bot]
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refactor: Make app validation script accept variable names as parameters

Copilot
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pelikhan
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revert: Revert "refactor: Make app validation script accept variable names as parameters"

Copilot
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pelikhan
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feat: Add engine.app support for Claude and Codex engines

Copilot
and
pelikhan
committed