Add Quarkus Expert agent

[jdubois]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• I have read and followed the Guidance for submissions involving paid services.
• My contribution adds a new agent file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my agent with GitHub Copilot.
• I have run npm run build and verified that docs/README.agents.md is up to date.
• I am targeting the main branch for this pull request.

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Description

Adds a Quarkus Expert agent covering Quarkus application code, Dev Services testing, native/container builds and troubleshooting. It points to the existing Quarkus skills and the quarkus instruction, and works without them. Validation: npm run build passed.

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Type of Contribution

• New agent file.

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[github-actions]

🚦 Submission status: 👀 Ready for review

Risk tier: merge-risk:medium — New or substantially changed resource without privileged execution
Required to merge: passing submission-gate checks plus 1 approval from reviewers with write access.

Why this tier

• Adds 1 file(s), e.g. agents/quarkus-expert.agent.md
• Changes 88 lines (low-risk limit is 40)

Automated checks

Check	Status	Details
Line endings	✅ Passed	Passed · logs
Spelling	✅ Passed	Passed · logs
Generated README consistency	✅ Passed	Passed · logs
Skill lint (vally)	✅ Passed	Passed · logs
Risk scan	✅ Passed	Passed · logs
Contributor reputation	✅ Passed	Passed · logs
Duplicate resource scan	✅ Passed	Passed · logs
PR quality signal	⏭️ Skipped	Skipped by its workflow · logs

Review

• Approvals: 0/1
• Assigned reviewer: not assigned yet — comment /request-review to ask for one
• Review target date: not set
• Still needed: 1 more approval(s)
• No staffed reviewer pool owns these files yet; any reviewer with write access counts as the domain reviewer.

Commands

Command	Who	What it does
/rerun-checks	PR author, maintainers	Re-runs failed or incomplete checks and re-evaluates this gate
/request-review	PR author, maintainers	Asks the review rotation to assign a reviewer (adds needs-reviewer)

_{Updated for e4ec5bf · gate run · This comment is maintained automatically — see submission gate docs.}

[github-actions]

🔒 PR Risk Scan Results

Scanned 1 changed file(s).

Severity	Count
🔴 High	0
🟠 Medium	0
ℹ️ Info	0

✅ No matching risk patterns were detected in changed files.

This is an automated soft-gate report. Findings indicate review targets and do not block merge by themselves.

[github-actions]

🔍 Vally Lint Results

⚠️ Warnings or advisories found

Scope	Checked
Skills	0
Agents	1
Total	1

Severity	Count
❌ Errors	0
⚠️ Warnings	0
ℹ️ Advisories	1

Summary

Level	Finding
ℹ️	Vally currently lints SKILL.md content. Agent files were detected but skipped:

Full linter output

### Agent files detected (not linted by vally)
ℹ️ Vally currently lints SKILL.md content. Agent files were detected but skipped:
agents/quarkus-expert.agent.md

[jdubois]

Closing for now; will reopen after #5080 and #5081 are merged so the agent can reference the new Java/Spring skills.

[Copilot]

🟡 Changes recommended

Incorrect build and verification guidance can produce the wrong artifact or skip packaged-application tests.

5 open findings

• Identify REST stacks using version-appropriate artifact names · New
• Remove duplicated guidance and expand actionable resource selection · New
• Separate ORM and reactive transaction guidance · New
• Run and report the correct packaged-application test suites · New
• Use build-tool-specific native compilation commands · New

What changed in this PR

Adds a standalone Quarkus Expert agent to the Copilot agent collection, with optional integration with existing Quarkus resources.

Changes:

• Defines guidance for development, testing, native/container builds, and troubleshooting.
• Adds catalog discovery and VS Code installation links.

File	Description
docs/​README.agents.md	Lists the agent with installation links.
agents/​quarkus-expert.agent.md	Defines the agent’s configuration and Quarkus guidance.

🧠 Review effort: Max

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