feat: add Hugging Face Spaces deployment configuration

- Add .space.toml for Space metadata and branding
- Add Dockerfile for containerized deployment
- Configure port 7860 for Hugging Face Spaces
- Set up static file serving for production build

.space.toml

@@ -0,0 +1,7 @@
+title = "Speaking Practice Browser"
+emoji = "📚"
+colorFrom = "blue"
+colorTo = "purple"
+sdk = "docker"
+pinned = false
+license = "mit"

Dockerfile

@@ -0,0 +1,24 @@
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build the project
+RUN npm run build
+
+# Install serve to run the built app
+RUN npm install -g serve
+
+# Expose port
+EXPOSE 7860
+
+# Serve the built app
+CMD ["serve", "-s", "dist", "-l", "7860"]