chore(master): release 1.5.1

[github-actions]

🤖 I have created a release beep boop

1.5.1 (2026-09-26)

Bug Fixes

• name the simulated merge commit in the previewed changelog (1709a26)
• name the simulated merge commit in the previewed changelog (5a41269)
• stop hardcoding manifest's "." key; dedupe linked-versions changelog repeats (cd4b1b0)
• stop hardcoding the manifest's "." key, dedupe linked-versions changelog repeats (f305bc0)

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This PR was generated with Release Please. See documentation.

[github-actions]

🤖 release-please PREVIEW

What merging this PR into master would trigger:

Merging release-please's own release PR (release-please--branches--master) publishes v1.5.1 — a patch bump from 1.5.0 — and creates the matching tag and GitHub release.

The changelog it would publish is this PR's own description, so there's nothing to dry-run here.

_{Predicted from b1e0072 merged into master at cd4b1b0, with the PR title read as chore(master): release 1.5.1 · Full run}

[github-actions]

🤖 Created releases:

• v1.5.1

🌻