- CLAUDE.md: added Implant UI component library section (D-169, D-170) - project-structure.md: added client/ui/implant/, hud_groups.gd, gameplay_renderer.gd - D-170: corrected implementation note from visibility toggling to z-index layering Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>