feat: add Docker deployment configuration

- Add server Dockerfile with multi-stage build
- Add frontend Dockerfile with Nginx
- Add docker-compose.yml for orchestration
- Add Nginx config with SSL support
- Add deployment documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deploy/Dockerfile.frontend

@@ -0,0 +1,41 @@
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Install pnpm
+RUN npm install -g pnpm
+
+# Copy workspace files
+COPY pnpm-workspace.yaml package.json pnpm-lock.yaml ./
+COPY packages/shared ./packages/shared
+COPY packages/client-screen ./packages/client-screen
+COPY packages/client-mobile ./packages/client-mobile
+
+# Install dependencies
+RUN pnpm install --frozen-lockfile
+
+# Build shared package
+WORKDIR /app/packages/shared
+RUN pnpm build
+
+# Build client-screen
+WORKDIR /app/packages/client-screen
+RUN pnpm build
+
+# Build client-mobile
+WORKDIR /app/packages/client-mobile
+RUN pnpm build
+
+# Production stage - Nginx
+FROM nginx:alpine
+
+# Copy built files
+COPY --from=builder /app/packages/client-screen/dist /usr/share/nginx/html/screen
+COPY --from=builder /app/packages/client-mobile/dist /usr/share/nginx/html/mobile
+
+# Copy nginx config
+COPY deploy/nginx.conf /etc/nginx/nginx.conf
+
+EXPOSE 80 443
+
+CMD ["nginx", "-g", "daemon off;"]