flat-artist is now the single container: all 16 template skills + the R&D
references/ moved inside flat-artist/. Cross-references updated — the orchestrator
points to bundled `<name>/SKILL.md`, sub-skills point to `../<name>/SKILL.md`,
and the R&D report path is relative. README catalog updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>