Configure Njord release publishing

[dain]

Why

• The release workflow follows the POM's direct Maven Central URL, which rejects uploads before Njord can validate and publish them.
• Bytecode is missing the shared Maven and Njord configuration used by successful Airlift release workflows.
• Without an early check, routing or credential problems are discovered only after release preparation has begun.

Approach

• Load the standard Airlift Maven settings for Sonatype Central publishing through Njord.
• Verify Central authentication and the effective Njord release route before preparing a release.

[coderabbitai]

📝 Walkthrough

Walkthrough

The Maven configuration now loads a project settings file defining Sonatype credentials from environment variables, the Njord publisher, and the release URL. The release workflow adds a verification step that runs njord:status, captures its output, and checks authentication and the effective release SCA template before release preparation.

Possibly related PRs

• airlift/bytecode#27: Adds related Maven Central publication and release configuration checks.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 2

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: db0b8a48-449d-4b5e-9dff-45a29fba19f7

📥 Commits

Reviewing files that changed from the base of the PR and between 9ce50d8 and 9f43f91.

📒 Files selected for processing (3)

• .github/workflows/release.yml
• .mvn/maven.config
• .mvn/settings.xml