GitHub Agentic Workflows Files

🌟 Release Highlights

This release streamlines the engine ecosystem by removing legacy engine support and delivers meaningful improvements to workflow compilation, the assign-to-agent feature, and the PR review safe output.

⚠️ Breaking Changes

• Custom engine support removed (#16533) — The custom engine type is no longer supported. Workflows using engine: custom must migrate to a supported engine (copilot, claude, or codex).
• copilot-sdk engine removed (#16519) — The copilot-sdk agent engine has been removed. Update any workflows referencing this engine.

✨ What's New

• unassign-first option for assign-to-user (#16542) — The assign-to-user safe output now supports an unassign-first option, making it easier to reassign issues by clearing existing assignees before adding new ones.
• Compiler version in lock file metadata (#16568) — Lock files now record the compiler version used during release builds, improving traceability and debugging when workflows behave differently across versions.
• Editor footer with legal links (#16538) — The workflow editor now displays a footer with legal links styled with Primer CSS, improving compliance and visual polish.

🐛 Bug Fixes & Improvements

• Fix assign-to-agent model selection (#16630) — Corrects the model parameter for agent assignment by adding the coding_agent_model_selection feature flag, ensuring the right model is used when dispatching to Copilot.
• Fix submit_pull_request_review outside PR triggers (#16602) — The safe output now correctly handles PR review submissions when the workflow is triggered outside of a pull_request event context.
• Improved cycle error messages in compiler (#16554) — The compiler now shows the full import chain when a cycle is detected, making it much easier to identify and resolve circular workflow imports.
• Fix nested remote import resolution (#16550) — Remote imports nested within other remote imports now correctly resolve relative paths against the parent workflow's base URL instead of failing with incorrect path errors.
• Updated CLI tool versions (#16563) — Bundled tool versions updated: Claude Code → 2.1.45, Copilot CLI → 0.0.411, Codex → 0.104.0.

📚 Documentation

• Fix directory name in creating-workflows guide (#16579) — Corrects a documentation error that referenced an incorrect directory name.

For complete details, see CHANGELOG.

Generated by Release

What's Changed

• Remove copilot-sdk agent engine by @Copilot in https://github.com/github/gh-aw/pull/16519
• Add footer with legal links to editor using Primer CSS by @Copilot in https://github.com/github/gh-aw/pull/16538
• Increase button spacing in editor header from 8px to 16px by @Copilot in https://github.com/github/gh-aw/pull/16537
• Fix engine registry test failures after custom engine re-addition by @Copilot in https://github.com/github/gh-aw/pull/16540
• Add unassign-first option to assign-to-user safe output by @Copilot in https://github.com/github/gh-aw/pull/16542
• build: pin tool installs in make tools by @davidahmann in https://github.com/github/gh-aw/pull/16546
• Remove dead copilot-client.js code from setup.sh by @Copilot in https://github.com/github/gh-aw/pull/16548
• Fix nested remote imports to resolve against parent workflowspec base path by @Copilot in https://github.com/github/gh-aw/pull/16550
• Clarify that contributors create agentic plans in issues, not pull requests by @Copilot in https://github.com/github/gh-aw/pull/16557
• compiler: show full import chain for cycle errors by @Copilot in https://github.com/github/gh-aw/pull/16554
• Update CLI tool versions: Claude Code 2.1.45, Copilot 0.0.411, Codex 0.104.0 by @Copilot in https://github.com/github/gh-aw/pull/16563
• [docs] Fix directory name in creating-workflows by @timwis in https://github.com/github/gh-aw/pull/16579
• Add compiler version to lock file metadata for release builds by @Copilot in https://github.com/github/gh-aw/pull/16568
• Remove custom engine support by @Copilot in https://github.com/github/gh-aw/pull/16533
• [slides] Remove custom engine from AI engines slide by @github-actions[bot] in https://github.com/github/gh-aw/pull/16600
• Refactor formatCompilerError and unify security findings formatting by @Copilot in https://github.com/github/gh-aw/pull/16598
• Fix submit_pull_request_review when not in pull_request trigger (fixes [#16587]) by @strawgate in https://github.com/github/gh-aw/pull/16602
• [code-simplifier] simplify submit_pr_review target parsing for consistency by @github-actions[bot] in https://github.com/github/gh-aw/pull/16624
• Fix assign-to-agent model parameter — add coding_agent_model_selection feature flag by @Copilot in https://github.com/github/gh-aw/pull/16630
• Fix missing global.context setup in submit_pr_review.test.cjs by @Copilot in https://github.com/github/gh-aw/pull/16633

New Contributors

• @davidahmann made their first contribution in https://github.com/github/gh-aw/pull/16546
• @timwis made their first contribution in https://github.com/github/gh-aw/pull/16579

Full Changelog: https://github.com/github/gh-aw/compare/v0.46.0...v0.46.1