fix(release): include CLI notes in GitHub releases

[marius-kilocode]

What Problem This Solves

GitHub release descriptions were generated only from the VS Code changelog, so CLI changes shipped in the same release were missing from the published notes.

Why This Change Was Made

Read the Kilo CLI changelog alongside the VS Code changelog and render each channel under its own heading. Keep the existing stable and prerelease filtering rules, and omit empty channels.

User Impact

Release pages now show the Kilo CLI changes shipped with the release, including CLI-only fixes such as session-list fixes. No runtime behavior changes.

Evidence

• bun test ./release-notes.test.ts
• Focused TypeScript check passed.
• Oxlint and Prettier checks passed.
• Dry run against the v7.5.16 changelogs included all six previously missing CLI entries.

The packages/opencode path is Kilo's @kilocode/cli package; the release notes are read from this repository only.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (3 files)

• .changeset/complete-release-notes.md
• script/kilocode/release-notes.test.ts
• script/kilocode/release-notes.ts

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_{Review guidance: REVIEW.md from base branch main}