[docs] Update documentation for features from 2026-03-05

[github-actions]

Documentation Updates - 2026-03-05

This PR updates the documentation based on features merged in the last 24 hours.

Features Documented

• Conclusion job automatic concurrency group (from feat: add concurrency group to conclusion job using workflow ID #19616)

Changes Made

• Updated docs/src/content/docs/reference/concurrency.md to add a new Conclusion Job Concurrency section documenting that the conclusion job automatically receives a workflow-specific concurrency group (gh-aw-conclusion-{workflow_id}) during compilation

Merged PRs Referenced

• feat: add concurrency group to conclusion job using workflow ID #19616 — feat: add concurrency group to conclusion job using workflow ID — Concurrent agents running the same workflow can now have their conclusion jobs run without interference, as each gets an automatic workflow-specific concurrency group

Notes

Other merged PRs reviewed and assessed as not requiring documentation changes:

• fix: graceful degradation in handle_create_pr_error when API calls fail #19683 — Internal bug fix (graceful degradation in handle_create_pr_error); no user-facing behavior change
• Quote label names in constraint messages to eliminate ambiguity with spaces #19682 — Internal improvement to agent constraint message formatting; no user-facing configuration change
• fix(audit): surface activation job errors when no agent artifacts were uploaded #19678 — Bug fix for gh aw audit showing activation job errors; behavior was already documented as the intended design
• Enterprise: replace hardcoded github.com with GITHUB_SERVER_URL in safe output JS #19621 — Enterprise GHES bug fix for safe output URL construction; transparent bug fix, existing behavior now works as documented
• [jsweep] Clean add_reviewer.cjs #19680, fix: use type=pullrequests for pull request history links #19676, chore(deps): bump svgo from 4.0.0 to 4.0.1 in /docs in the npm_and_yarn group across 1 directory #19665, [docs] docs: reduce compilation-process.md by ~20% by removing redundant content #19664, [docs] Developer Documentation Consolidation v3.6 — 2 tone fixes #19663, [instructions] Sync github-agentic-workflows.md with v0.40.1 #19661, chore(deps): bump the npm_and_yarn group across 1 directory with 2 updates #19654, [log] Add debug logging to tar, schema utilities, MCP config types, and wizard command #19651, [dead-code] chore: remove dead functions — 10 functions removed #19643, Fix failing JS test: sync expected labels with implementation in check_workflow_recompile_needed #19628 — Internal refactoring, dependency bumps, or already-applied documentation changes

Open documentation issues reviewed:

• [workflow-style] Normalize report formatting for daily-code-metrics workflow #19603 — About internal workflow file formatting (.github/workflows/daily-code-metrics.md), not user-facing docs
• [cli-consistency] CLI Consistency Issues - 2026-03-04 #19601 — CLI consistency issues tracked for code fixes, not documentation
• Provider-based authentication for Claude, Copilot, Codex. #16498 — Provider-based authentication documentation gap; complex pre-existing issue requiring deeper investigation before authoring accurate docs

Generated by Daily Documentation Updater · ◷

• expires on Mar 6, 2026, 4:24 AM UTC

[Copilot]

Pull request overview

This PR adds documentation for the automatic conclusion job concurrency group feature introduced in PR #19616. When a workflow is compiled, the conclusion job now receives a workflow-specific concurrency group (gh-aw-conclusion-{workflow_id}) to prevent interference between concurrent agents running the same workflow.

Changes:

• Added a new "Conclusion Job Concurrency" section to the concurrency reference documentation, explaining the automatic concurrency group assignment, its format, and that it requires no manual configuration.

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