refactor: move nested skills to root + add ui-ux-pro-max + ConsentOS

- Extract 9 nested skills from website-creator/ to root skills/
- Remove duplicate seo-analyzers, seo-geo, seo-multi-channel from website-creator
- Add new ui-ux-pro-max skill with full UI/UX data
- Update install-skills.sh to sync properly
- Remove .DS_Store artifacts

Moved skills:
- api-and-interface-design
- banner-design
- brand
- design-system
- design
- frontend-ui-engineering
- slides
- spec-driven-development
- ui-styling

scripts/install-skills.sh

@@ -9,7 +9,7 @@ set -e
 REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 SKILLS_DIR="${REPO_ROOT}/skills"
 GLOBAL_DIR="${HOME}/.config/opencode"
-GLOBAL_SKILLS_DIR="${GLOBAL_DIR}/skills"
+GLOBAL_SKILLS_DIR="${HOME}/.opencode/skills"
 UNIFIED_ENV="${GLOBAL_DIR}/.env"
 REPO_UNIFIED_ENV="${REPO_ROOT}/.env"
 
@@ -285,7 +285,18 @@ main() {
         fi
     done
     echo ""
-    
+
+    # Also sync to ~/.config/opencode/skills/ for backward compatibility
+    if [ "$TARGET" != "${GLOBAL_DIR}/skills" ]; then
+        print_info "Syncing to ~/.config/opencode/skills/ for compatibility..."
+        mkdir -p "${GLOBAL_DIR}/skills"
+        for skill in $SKILLS; do
+            cp -r "${TARGET}/${skill}" "${GLOBAL_DIR}/skills/" 2>/dev/null || true
+        done
+        print_success "Synced to ~/.config/opencode/skills/"
+    fi
+    echo ""
+
     # Install deps
     print_info "Installing dependencies..."