🤖 feat: VS Code Marketplace release infrastructure

[ammar-agent]

Generated with cmux

Overview

Establishes complete infrastructure for publishing the cmux VS Code extension to the official VS Code Marketplace.

What's Included

Documentation

• MARKETPLACE_RELEASE.md: Comprehensive publishing guide covering Azure DevOps setup, PAT management, publishing procedures, troubleshooting, and maintenance
• RELEASE_CHECKLIST.md: Quick reference for release workflow
• README.md: Updated with marketplace installation as primary method

Automation

• GitHub Actions workflow (.github/workflows/publish-vscode-extension.yml)
  • Triggers on tags matching vscode-v*
  • Builds, packages, and publishes to marketplace
  • Creates GitHub release with .vsix attached
  • Requires VSCE_PAT repository secret

Verification

• verify-marketplace-setup.sh: Pre-publish verification script

Release Process

One-Time Setup (Required)

1. Create Azure DevOps account
2. Generate PAT with Marketplace: Acquire + Publish scopes
3. Add VSCE_PAT to GitHub repository secrets
4. Verify/create "coder" publisher: npx @vscode/vsce login coder

Publishing (Automated)

git tag vscode-v0.1.0
git push origin vscode-v0.1.0

GitHub Actions handles the rest:

• Builds extension
• Publishes to marketplace
• Creates GitHub release

Future Releases

cd vscode
npm version patch
git add package.json CHANGELOG.md
git commit -m "🤖 release: VS Code extension v0.1.1"
git push origin marketplace-release
git tag vscode-v0.1.1
git push origin vscode-v0.1.1

Ready to Ship

Extension code is production-ready (already merged in #553). This PR only adds release infrastructure.

No code changes - purely documentation and CI/CD setup.

Next Steps After Merge

1. Complete Azure DevOps setup (PAT + publisher)
2. Add VSCE_PAT secret to repository
3. Tag and push vscode-v0.1.0 to trigger first publish
4. Verify on marketplace: https://marketplace.visualstudio.com/items?itemName=coder.cmux

Questions

• Publisher name "coder" correct?
• Ready to publish 0.1.0 immediately after merge?
• Want pre-release flag for initial launch?