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

skills/website-creator/ui-styling/scripts/requirements.txt

@@ -0,0 +1,17 @@
+# UI Styling Skill Dependencies
+# Python 3.10+ required
+
+# No Python package dependencies - uses only standard library
+
+# Testing dependencies (dev)
+pytest>=8.0.0
+pytest-cov>=4.1.0
+pytest-mock>=3.12.0
+
+# Note: This skill works with shadcn/ui and Tailwind CSS
+# Requires Node.js and package managers:
+#   - Node.js 18+: https://nodejs.org/
+#   - npm (comes with Node.js)
+#
+# shadcn/ui CLI is installed per-project:
+#   npx shadcn-ui@latest init