chore(release): bump kimi-cli 1.39.0 and kosong 0.52.0

[RealKai42]

Summary

• Bump kimi-cli and kimi-code from 1.38.0 → 1.39.0
• Bump kosong from 0.51.0 → 0.52.0; update root kosong[contrib] pin to match
• Move Unreleased entries under 1.39.0 (2026-04-24) / 0.52.0 (2026-04-24) in all changelogs (root, kosong, docs EN/ZH)
• Record merge_all_available_skills default flip (false → true) in docs/{en,zh}/release-notes/breaking-changes.md
• uv sync to refresh uv.lock

Release tags after merge

• git tag 1.39.0 (triggers kimi-cli + kimi-code release workflow)
• git tag kosong-0.52.0 (triggers kosong release workflow)
• git push --tags

Test plan

• CI passes on all platforms
• Binary + PyPI release artifacts build green after tags are pushed
• Kosong release workflow publishes 0.52.0 to PyPI

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[Copilot]

Pull request overview

Release prep PR that bumps kimi-cli/kimi-code to 1.39.0 and kosong to 0.52.0, updates dependency pins/lockfile, and publishes the corresponding release notes (including a documented breaking default change).

Changes:

• Bump versions: kimi-cli + kimi-code → 1.39.0, kosong → 0.52.0, and update the root kosong[contrib] pin.
• Move “Unreleased” notes into dated 1.39.0 (2026-04-24) / 0.52.0 (2026-04-24) sections across changelogs.
• Document the merge_all_available_skills default flip (false → true) in breaking-changes docs (EN/ZH) and refresh uv.lock.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pyproject.toml	Bumps kimi-cli to 1.39.0 and pins kosong[contrib] to 0.52.0.
packages/kimi-code/pyproject.toml	Bumps kimi-code to 1.39.0 and updates dependency on kimi-cli==1.39.0.
packages/kosong/pyproject.toml	Bumps kosong to 0.52.0.
uv.lock	Updates workspace package versions to match the release bumps.
CHANGELOG.md	Moves entries under 1.39.0 (2026-04-24).
packages/kosong/CHANGELOG.md	Moves entries under 0.52.0 (2026-04-24).
docs/en/release-notes/changelog.md	Updates English docs changelog for 1.39.0 (2026-04-24).
docs/zh/release-notes/changelog.md	Updates Chinese docs changelog for 1.39.0 (2026-04-24).
docs/en/release-notes/breaking-changes.md	Adds 1.39.0 breaking-change note for merge_all_available_skills default flip.
docs/zh/release-notes/breaking-changes.md	Chinese counterpart breaking-change note for the default flip.

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.