Summary

The repo currently has no local governance documentation. Add standard files so contributors know how to work with this repo.

Tasks

• CONTRIBUTING.md: branch naming convention, PR process, how to use GitHub Issues, how to update work item status
• .github/ISSUE_TEMPLATE/: templates for work item, bug, and general task
• CODE_OF_CONDUCT.md
• .github/PULL_REQUEST_TEMPLATE.md

Acceptance criteria

• All files present and accurate
• Branch naming (e.g. rb-XX-name, i08) documented
• Devcontainer setup referenced in CONTRIBUTING.md

Branch

rb-06-governance