Add prerelease changelog notes card

[mfoltz]

Summary

Adds a small prerelease-notes helper so Eclipse GitHub prereleases get a clearer release body and the Thunderstore publish path validates changelog turnover before publishing. Bumps Eclipse release metadata to 1.3.17 for this release-hygiene workflow change.

Details

• Generates the GitHub prerelease body from CHANGELOG.md instead of hardcoded inline workflow text.
• Adds a details card with branch, commit, workflow run, GitHub tag, Thunderstore package version, and explicit ## Unreleased turnover status.
• Validates that ## Unreleased is empty and the target version has notes before generating prerelease notes.
• Validates both the local checkout changelog and the downloaded prerelease CHANGELOG.md during Thunderstore dispatch.
• Uses .codex/scripts/bump-version.ps1 -Version 1.3.17 so Eclipse.csproj, thunderstore.toml, and the top changelog entry stay aligned.

Validation

• pwsh -NoProfile -File .codex/scripts/release-nudge.ps1
• pwsh -NoProfile -File .codex/scripts/prerelease-notes.tests.ps1
• pwsh -NoProfile -File .codex/scripts/release-hygiene.tests.ps1
• actionlint .github/workflows/build.yml .github/workflows/release.yml
• git diff --check
• C:\Program Files\Git\bin\bash.exe .codex/scripts/version-metadata.sh
• dotnet restore Eclipse.csproj
• dotnet build Eclipse.csproj --configuration Release -p:DeployToClient=false --no-restore

Notes

Created as a draft so it can be marked ready after a quick human pass. No Thunderstore publish is dispatched by this PR.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 384887e892

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".