fix(jetbrains): harden release skill

[kirillk]

Summary

• Document release tag fetching, CI wait/rerun gates, and GitHub API recovery paths in the JetBrains release skill.
• Fix the changelog helper to read release-branch contents with the contents API ?ref= query.
• Make the publish watcher tolerate already-merged PRs and retry transient GitHub API failures during release discovery.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (5 files)

• .kilo/skills/release-jetbrains/SKILL.md
• .kilo/skills/release-jetbrains/script/update-changelog.ts
• .kilo/skills/release-jetbrains/script/watch-publish.ts
• AGENTS.md
• packages/kilo-jetbrains/AGENTS.md

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_{Reviewed by deepseek-v4-pro-20260423 · 124,035 tokens}

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