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/templates/nextjs-payload-starter/docker-compose.yml

@@ -0,0 +1,40 @@
+version: '3'
+
+services:
+  payload:
+    image: node:22-alpine
+    ports:
+      - '3000:3000'
+    volumes:
+      - .:/home/node/app
+      - node_modules:/home/node/app/node_modules
+    working_dir: /home/node/app/
+    command: sh -c "corepack enable && corepack prepare pnpm@9.0.0 --activate && pnpm install && pnpm dev"
+    depends_on:
+      - postgres
+    env_file:
+      - .env
+    networks:
+      - payload-network
+
+  postgres:
+    restart: always
+    image: postgres:16-alpine
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    ports:
+      - '5432:5432'
+    environment:
+      POSTGRES_USER: payload
+      POSTGRES_PASSWORD: payloadpass
+      POSTGRES_DB: payload
+    networks:
+      - payload-network
+
+networks:
+  payload-network:
+    driver: bridge
+
+volumes:
+  pgdata:
+  node_modules: