[schuettc]

Adds a root CLAUDE.md with two still-true rules from retired agent memory. Court approved the text in galley as part of the final memory triage.

• Plugin authoring: skills-only plugins, naming for actions, advisory skills and plugins, per-project disable, mirror feature-workflow.
• Publishing npm packages: repository.url and directory for OIDC provenance, dev tag first, never reuse a version, test bin entry points through a symlink.