Update skills: add website-creator, mql-developer, ecommerce-astro

Changes:
- Add FAL_KEY and GEMINI_API_KEY to .env.example
- Update picture-it to use ~/.config/opencode/.env (unified creds)
- Remove shodh-memory skill (no longer used)
- Remove alphaear-* skills (deprecated)
- Remove thai-frontend-dev skill (replaced by website-creator)
- Remove theme-factory skill
- Add mql-developer skill (MQL5 trading)
- Add ecommerce-astro skill (Astro e-commerce)
- Add website-creator skill (Next.js + Payload CMS)
- Update install script for new skills

scripts/install-skills.sh

@@ -51,6 +51,15 @@ setup_unified_env() {
     
     [ -f "$env_example" ] || return
     
+    # Check if .env already exists in repo - skip interactive setup if it does
+    if [ -f "$env_file" ]; then
+        line
+        print_success "Using existing .env file in project"
+        line
+        echo ""
+        return
+    fi
+    
     line
     print_info "Unified Configuration Setup"
     line