Upgrade gh-aw workflows to v0.85.4

[mattleibow]

Summary

• upgrade gh-aw workflow assets and action/container pins to v0.85.4
• configure the API docs writer to use Claude Opus 4.8
• raise the pull-request limits to 500 files and 7,168 KB
• refresh the dispatcher agent, routing skill, and Copilot setup workflow

Validation

• gh aw compile --strict --validate --purge

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
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[learn-build-service-prod]

Learn Build status updates of commit 9bff921:

✅ Validation status: passed

File	Status	Preview URL	Details
.gitattributes	✅Succeeded
.github/agents/agentic-workflows.md	✅Succeeded
.github/aw/actions-lock.json	✅Succeeded
.github/skills/agentic-workflows/SKILL.md	✅Succeeded
.github/workflows/auto-api-docs-writer.lock.yml	✅Succeeded
.github/workflows/auto-api-docs-writer.md	✅Succeeded
.github/workflows/copilot-setup-steps.yml	✅Succeeded

For more details, please refer to the build report.