build: prepare v0.0.2 for VS Code Marketplace

[aadorian]

Summary

• Bump extension to 0.0.2 with changelog for tree views, webviews, settings, and CLI commands
• Fix VSIX packaging (exclude wiki artifacts and .vscode/ — ~30 KB vs 11 MB)
• Add release workflow: tests → package → optional Marketplace publish → GitHub Release
• Align publisher with Marketplace account (AlejandroAdorjan) and add npm run publish

Test plan

• CI passes (validate, tests, VSIX package, commit lint)
• npm run publish produces opencode-walkthrough-0.0.2.vsix

Supersedes #39.

Made with Cursor

[github-actions]

Thanks for your pull request! 🎉

CI will run extension tests and package a VSIX artifact you can download from the Checks tab.

Review locally (recommended)

1. Check out this branch: git fetch origin pull/43/head:pr-43 && git checkout pr-43
2. Open the repo in VS Code and press F5 to launch the Extension Development Host
3. Exercise your changes in the sidebar, commands, and walkthrough

Review in VS Code with GitHub Pull Requests

Install the GitHub Pull Requests extension to browse, comment, and validate this PR without leaving the editor — the same workflow described in GitHub Pull Requests in VS Code.

Checklist

• CI checks pass (validate, tests, VSIX package)
• Tested in Extension Development Host (F5)
• Walkthrough content updated if applicable
• PR title follows Conventional Commits

Git workflow

See the Git workflow guide for branching, commits, and releases.

Good first issues

New contributor? See the good first issues roadmap.