Code of Conduct

⚠️ This document is an urgent gap identified in docs/strategy/12-documentation-architecture.md: "Missing despite 25+ active external contributors. Should be added immediately, independent of any other work in this package — this is a near-zero-cost fix for a real, present governance gap."

Tracked in: salazarsebas/Cougr issues

A Code of Conduct will be added here imminently. It will be based on the Contributor Covenant and apply to all project spaces including GitHub Issues, Pull Requests, and any community channels.