init: HejYou Language Learning App (React + Vite)

React SPA with Vite, Directus backend, canvas-confetti.
Includes Dockerfile (multi-stage Node → nginx) for Coolify deployment.

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

Dockerfile

@@ -0,0 +1,18 @@
+FROM node:20-alpine AS build
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+
+ARG VITE_DIRECTUS_URL
+ENV VITE_DIRECTUS_URL=$VITE_DIRECTUS_URL
+
+RUN npm run build
+
+FROM nginx:alpine
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]