feat: add official EmDash marketing template

- Marketing landing page with hero, features, testimonials, FAQ, pricing
- EmDash CMS with pages collection and marketing blocks
- Full seed data with all content sections
- Dockerfile with entrypoint for database persistence
- Responsive design with CSS variables

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,36 @@
+FROM node:22-alpine AS deps
+
+RUN apk add --no-cache python3 make g++ sqlite
+
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml* ./
+RUN corepack enable && corepack prepare pnpm@9.0.0 --activate
+RUN pnpm install
+
+FROM deps AS builder
+
+WORKDIR /app
+
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+RUN pnpm build && pnpm exec emdash init && mkdir -p uploads
+
+FROM deps AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV HOST=0.0.0.0
+
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/uploads ./uploads
+
+EXPOSE 4321
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]