fix: backend-only deployment branch - removed all frontend files from root

Dockerfile

@@ -1,40 +1,12 @@
-# LifeLine AI - OpenEnv Phase 1 Validator Dockerfile
-# Optimized for Backend-only compliance to bypass "HTML instead of JSON" errors
 FROM python:3.11-slim
 
-LABEL maintainer="LifeLine Team" \
-      org.opencontainers.image.title="LifeLine AI - Phase 1 Backend" \
-      description="Backend-only deployment for OpenEnv Phase 1 validation"
-
-# Environment variables
-ENV PYTHONUNBUFFERED=1 \
-    DEBIAN_FRONTEND=noninteractive \
-    NODE_ENV=production
-
-# Workspace setup
 WORKDIR /app
 
-# Install system build dependencies
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-    build-essential curl ca-certificates && \
-    rm -rf /var/lib/apt/lists/*
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy the entire codebase
 COPY . .
 
-# Virtual Environment implementation (compliant with modern Linux distros)
-RUN python3 -m venv /opt/venv
-ENV PATH="/opt/venv/bin:$PATH"
-
-# Install Python requirements
-RUN pip install --no-cache-dir --upgrade pip && \
-    pip install --no-cache-dir -r requirements.txt
-
-# Expose Hugging Face Space port
 EXPOSE 7860
 
-# --- Phase 1 Specific ---
-# We ONLY start the FastAPI backend on port 7860.
-# No Next.js started, no shell-redirection, no background processes.
 CMD ["uvicorn", "backend.app.main:app", "--host", "0.0.0.0", "--port", "7860"]