Release 0.5.1

[powerfooI]

Release 0.5.1 — prepared with bun run release:prepare 0.5.1.

• Bumps the four version files (3 package.json + herdr-plugin.toml) to 0.5.1
• Finalizes CHANGELOG.md: pane keyboard shortcuts (Add pane focus and split keyboard shortcuts #89), Herdr plugin manifest and launcher (Add Herdr plugin manifest and launcher #90), prebuilt plugin downloads (Download prebuilt binaries in the Herdr plugin build #91)

Merge this PR, then run the Publish Release workflow with 0.5.1.

[Copilot]

🟡 Changes recommended

The 0.5.1 changelog entry does not currently reflect the “prebuilt plugin downloads” change called out in the PR description (#91).

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Prepares the 0.5.1 release of Herdr Studio by aligning all published version identifiers across the monorepo and finalizing the changelog entry for the release.

Changes:

• Bump versions from 0.5.0 → 0.5.1 in root, web/, and server/ package.json.
• Bump herdr-plugin.toml plugin version to 0.5.1.
• Finalize CHANGELOG.md by promoting the previous “Unreleased” entry under 0.5.1 - 2026-09-03.

File summaries

File	Description
package.json	Bumps root package version to 0.5.1.
web/package.json	Bumps web package version to 0.5.1.
server/package.json	Bumps server package version to 0.5.1.
herdr-plugin.toml	Bumps plugin manifest version to 0.5.1.
CHANGELOG.md	Adds 0.5.1 release header/date and assigns release notes to it.

Review details

• Files reviewed: 5/5 changed files
• Comments generated: 1
• Review effort level: Lite

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[Copilot]

🟢 Approval recommended

The changes are consistent release-prep updates (version bumps + changelog finalization) with no apparent correctness or compatibility risks.

Review details

• Files reviewed: 5/5 changed files
• Comments generated: 0 new
• Review effort level: Lite