chore: initialize WiseGrade project

backend/Dockerfile

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+FROM python:3.11-slim
+ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1 HF_HUB_OFFLINE=1 TRANSFORMERS_OFFLINE=1
+RUN apt-get update && apt-get install -y --no-install-recommends libreoffice poppler-utils fonts-noto-cjk libpango-1.0-0 libpangoft2-1.0-0 libgl1 libglib2.0-0 && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY --from=ghcr.io/astral-sh/uv:0.11.0 /uv /uvx /bin/
+COPY pyproject.toml uv.lock ./
+RUN uv sync --frozen --no-dev --extra ocr
+COPY . .
+ENV PATH=/app/.venv/bin:$PATH PYTHONPATH=/app