feat: automated release workflow with auto-merge

[vreshch]

Summary

• Add release-prepare.yml workflow (manual trigger) that automates version bump, AI-generated changelog, and release PR creation
• Workspace-aware: --packages input selects which packages to bump (core, platform, or both)
• Add auto_merge toggle — when enabled, uses gh pr merge --auto --squash to merge after CI passes
• Add release scripts: bump-version.js (workspace-aware), generate-changelog.js (Claude API), update-changelog.js

How it works

workflow_dispatch (bump_type + packages + auto_merge)
  → npm run verify
  → bump selected package versions independently
  → generate changelog via Claude API
  → update CHANGELOG.md
  → create release PR (release/core-0.5.1-platform-0.2.2 → master)
  → if auto_merge: gh pr merge --auto --squash
  → on merge: existing publish.yml detects version changes → npm publish matrix

Usage

# Bump both packages
gh workflow run release-prepare.yml -f bump_type=patch -f packages=core,platform -f auto_merge=true

# Bump only core
gh workflow run release-prepare.yml -f bump_type=minor -f packages=core -f auto_merge=false

Test plan

• Verify scripts run locally: node scripts/bump-version.js patch --packages core
• Trigger workflow manually from GitHub Actions UI
• Verify release PR is created with changelog
• Test auto-merge flow

[github-actions]

🔍 Pull Request Validation Results

Step	Status
🔍 Type Check	✅ Passed
🎨 Lint	✅ Passed
🎨 Format	✅ Passed
🏗️ Build	✅ Passed
🧪 Tests	✅ Passed
📊 Coverage	✅ Passed

Overall: ✅ All checks passed!

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⏰ Generated at: 2026-03-29T09:32:43.641Z