fix(release): guard ancestry filtering of pending commits

[0xApotheosis]

Description

Fixes regular release previews listing #113 again after it was released as v1.9.0 under a different commit SHA.

Uses ancestry filtering and skips merges that add no content, while retaining feature merges. Stops before creating a release if main is not an ancestor of develop, or if the merge-back includes earlier unreleased develop changes that filtering would hide.

Verification

• Run bun test scripts/release-commits.test.ts to exercise duplicate release commits, feature merges, matching branches, diverged branches, and unreleased work preceding a merge-back.
• Inspect the preview without creating a release: bun -e 'import { getRegularReleaseCommits } from "./scripts/release-commits"; console.log(await getRegularReleaseCommits())'.

Confirmed locally: with main at v1.9.0 and develop at #115, the preview lists only #114 and #115. The fixture tests retain feature merges and reject both unsafe histories.

Summary by CodeRabbit

• Chores
  • Regular release summaries now list commits individually and more accurately reflect changes included in the release.
  • Release processing now stops with a clear error when it encounters a failure, rather than continuing as if successful.

[railway-app]

🚅 Deployed to the website-frontend-pr-116 environment in website-frontend

1 service not affected by this PR

• website-frontend

[coderabbitai]

Note

Currently processing new changes in this PR. This may take a few minutes, please wait...

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 0214428b-6a9f-4fe0-af1c-76a94954d70f

📥 Commits

Reviewing files that changed from the base of the PR and between 5313bfc and 344ae25.

📒 Files selected for processing (3)

• scripts/release-commits.test.ts
• scripts/release-commits.ts
• scripts/release.ts

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