chore(release): open dev at 2.87.0 before releasing 2.86.0

[github-actions]

Summary

2.86.0 is about to be released. Merging this first means dev already outranks the new tag when it lands, so neither dev nor any open pull request ever inherits the version-line failure. release.yml refuses to publish until this has merged.

This moves dev to 2.87.0 in package.json and the desktop version
sources (tauri.conf.json, Cargo.toml, and the opencodex-desktop entry of Cargo.lock).

Opened automatically by .github/workflows/dev-version-bump.yml. The same
version-line move was previously done by hand in 32529c2, e4a85d1, 076ad30, and
befcac3.

Verification

The workflow proved 2.86.0 has neither a Git tag nor an npm publication, and bun test tests/ci-workflows/release-version-line.test.ts proved the chosen development version is unused.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

Review readiness checklist

This PR stays in draft until every box below is ticked. Tick all four boxes once the requirements are met:

• Required local validation passed; commands, results, and any full-suite exception are documented.

• I pushed my PR to a recent dev commit (at most 10 behind; a maintainer may still ask for the exact tip before merge).

• I resolved all correct Codex and CodeRabbit findings.

• My PR is ready for review.

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[github-actions]

⏳ DRAFT

• hygiene: unsponsored_surface.

What to do

• Fix unsponsored_surface — This changes an authentication, workflow, release-automation, or dependency surface. MAINTAINERS.md requires security review for these; ask a maintainer to apply maintainer-sponsored once they have reviewed it. Paths: package.json.
• Tick all four boxes in the PR description once you're done (currently 0/4).

Review readiness checklist

• ⬜ Required local validation passed; commands, results, and any full-suite exception are documented.
• ⬜ I pushed my PR to a recent dev commit (at most 10 behind; a maintainer may still ask for the exact tip before merge).
• ⬜ I resolved all correct Codex and CodeRabbit findings.
• ⬜ My PR is ready for review.

0/4 boxes ticked.

Automatic draft conversion failed (token cannot change draft status). Please convert this pull request to a draft manually. The required enforce-target check will keep failing until every issue above is resolved.

[lidge-jun]

Maintainer integration into dev (MAINTAINERS.md dev-only exception) for @lidge-jun: this is the release pre-move before promoting 2.86.0. The candidate is 494c50d02f (#7107). Its tree cc3929dd equals the tree of #7107 head 18895e5f8, which passed three manual lane=all Cross-platform CI runs: 38618683553, 38618694617, 38618706022. This PR changes only the four version fields. Exact head 0b7f2d3880c9362164d7c03d0a3ceb7699baf7ba.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-14T20:13:04.447271Z	0b7f2d3	Draft marked ready

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