GroomBook images live on the Gitea registry, not GitHub. Update SDLC,
coding-standards, and CLAUDE.md to match.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mirrors the privilegedescalation/org pattern: extract company-wide
policy that was previously inlined in each agent's AGENTS.md into three
shared skills. Agents will reference these via one-line invocation
reminders in their Wake additions section.