Add root route for HF Space homepage

Dockerfile

@@ -12,6 +12,9 @@ LABEL maintainer="MediRoute Team" \
 # ── System dependencies ───────────────────────────────────────────────────────
 RUN apt-get update && apt-get install -y --no-install-recommends \
         curl \
+        ca-certificates \
+        gnupg \
+        build-essential \
     && rm -rf /var/lib/apt/lists/*
 
 # ── Python runtime defaults ───────────────────────────────────────────────────
@@ -36,6 +39,14 @@ RUN if [ -f ./lifeline-backend-requirements.txt ]; then \
 # Copying the full project avoids file-not-found build breaks and is HF-Spaces-friendly.
 COPY . .
 
+# Install Node.js and build the Next.js frontend (do this as root before switching user)
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get update && apt-get install -y --no-install-recommends nodejs \
+    && rm -rf /var/lib/apt/lists/* \
+    && cd lifeline-ai \
+    && npm ci --no-audit --no-fund || npm install \
+    && npm run build
+
 # ── Non-root user for security ────────────────────────────────────────────────
 RUN adduser --disabled-password --gecos "" appuser
 USER appuser
@@ -46,10 +57,9 @@ ENV OPENAI_API_KEY="EMPTY" \
     MODEL_NAME="gpt-4o-mini" \
     HF_TOKEN=""
 
-# ── Expose the port expected by Hugging Face Spaces and run the backend web server
+# ── Expose the port expected by Hugging Face Spaces (frontend)
 EXPOSE 7860
 
-# Default command: start the FastAPI backend (lifeline-ai backend) on port 7860.
-# This keeps the container running as a web service compatible with Spaces (sdk: docker).
-# It will cd into the backend folder and run uvicorn. Override at runtime as needed.
-CMD ["sh", "-c", "uvicorn backend.app.main:app --host 0.0.0.0 --port 7860"]
+# Default command: start backend on 8000 (background) and run Next.js frontend on 7860
+# The frontend proxies /api to the backend via next.config.js rewrites.
+CMD ["sh", "-c", "uvicorn backend.app.main:app --host 127.0.0.1 --port 8000 & cd lifeline-ai && exec npm run start -- -p 7860"]

lifeline-ai/next.config.js

@@ -0,0 +1,14 @@
+/**
+ * Next.js configuration: proxy /api requests to the local FastAPI backend
+ * so the frontend can call /api/* and the backend remains accessible.
+ */
+/** @type {import('next').NextConfig} */
+module.exports = {
+  reactStrictMode: true,
+  async rewrites() {
+    return [
+      { source: '/api/:path*', destination: 'http://127.0.0.1:8000/:path*' },
+      { source: '/api', destination: 'http://127.0.0.1:8000/' },
+    ];
+  },
+};