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/ecommerce-astro/scripts/templates/Dockerfile

@@ -0,0 +1,39 @@
+FROM node:20-alpine AS base
+
+# Install dependencies stage
+FROM base AS deps
+RUN apk add --no-cache libc6-compat python3 make g++
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+
+# Build stage
+FROM deps AS builder
+WORKDIR /app
+COPY . .
+RUN npm run build
+
+# Production stage
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 astro
+
+RUN apk add --no-cache curl
+
+COPY --from=builder --chown=astro:nodejs /app/dist ./dist
+COPY --from=builder --chown=astro:nodejs /app/package*.json ./
+
+USER astro
+
+EXPOSE 4321
+
+ENV HOST=0.0.0.0
+ENV PORT=4321
+
+HEALTHCHECK --interval=30s --timeout=3s CMD curl -f http://localhost:4321/ || exit 1
+
+CMD ["node", "dist/server/entry.mjs"]